Nose Region Research Articles

Foveal processing of emotion-informative facial features.

Certain facial features provide useful information for recognition of facial expressions. In two experiments, we investigated whether foveating informative features of briefly presented expressions improves recognition accuracy and whether these features are targeted reflexively when not foveated. Angry, fearful, surprised, and sad or disgusted expressions were presented briefly at locations which would ensure foveation of specific features. Foveating the mouth of fearful, surprised and disgusted expressions improved emotion recognition compared to foveating an eye or cheek or the central brow. Foveating the brow led to equivocal results in anger recognition across the two experiments, which might be due to the different combination of emotions used. There was no consistent evidence suggesting that reflexive first saccades targeted emotion-relevant features; instead, they targeted the closest feature to initial fixation. In a third experiment, angry, fearful, surprised and disgusted expressions were presented for 5 seconds. Duration of task-related fixations in the eyes, brow, nose and mouth regions was modulated by the presented expression. Moreover, longer fixation at the mouth positively correlated with anger and disgust accuracy both when these expressions were freely viewed (Experiment 2b) and when briefly presented at the mouth (Experiment 2a). Finally, an overall preference to fixate the mouth across all expressions correlated positively with anger and disgust accuracy. These findings suggest that foveal processing of informative features is functional/contributory to emotion recognition, but they are not automatically sought out when not foveated, and that facial emotion recognition performance is related to idiosyncratic gaze behaviour.

Serious Suicide Attempt by Hunting Gun with Severely Infectious Wounds and Facial Deformity during COVID-19 Arena; A Case Report

The etiology of suicide among students around the world revolves issues such as communication, education, family problems and parents’ relationship. We intend to report a case with serious recurrent suicide attempt by gun shot during COVID-19 period. We also present psychiatric and clinical evaluation, cosmetic surgery consultation, as well as microbial assessments in this survey. The seventeen-year-old single male student from southwest of Iran with asymmetric deformed face was observed with the loss of parts of the mouse, nose, chin and mandible region .He had experienced a serious suicide attempt by a threatening plan following rejection. The patient had blurred, hypo phonic and hypotonic speech. Following the shooting, the soft and hard palate, facial, frontal bone and sinus had been destroyed and a foreign body was seen in the frontal sinus. After suicide risk as assessment, It was detected multiple predictive risk factors for recent suicide attempt and the possibility of recurrent suicide in future. Finally, reconstructive surgery was performed. We assessed him via face to face interview in order to identify psychiatric disorders. Also, he was evaluated as probability of committing recurrent suicide. It is emphasized that in families which young children are prone to psychiatric disorders or emotional problems, availability of a dangerous device such as a gun can be harmful and it should be removed as soon as possible. We suggest the need for psychiatric evaluation especially suicide phenomenon in adolescents and their families as various conflicts in family context.

Finite Element Simulation of a Taylor Bubble in Two-Phase Gas-Liquid Slug Flows using Petrov-Galerkin Formulation

Petrov-Galerkin finite element scheme for systematic analysis of the dynamics of a rising Taylor bubble and general free surface flow problems is derived and implemented. The validity of the scheme is confirmed by simulating the buoyancy-driven motion of a Taylor bubble through a stagnant Newtonian liquid in a vertical pipe characterised by dimensionless inverse viscosity number and Eötvös number of magnitude 111 and 189, respectively. Comparison of the numerical results for the steady state features defining the nose, film, and bottom regions around the bubble with the experiment shows a good agreement between the numerical simulation and the experiment. The percentage deviation of the numerical computed rise velocity, equilibrium film thickness, and stabilisation length ahead of the bubble from the experimental determined values are 8.4%, 2.3%, and 9.5%, respectively.

Estimation of resting blood pressure using facial thermal images by separating acute stress variations

The increasing number of people with hypertension worldwide has become a matter of grave concern. Blood pressure monitoring using a non-contact measurement technique is expected to detect and control this medical condition. Previous studies have estimated blood pressure variations following an acute stress response based on facial thermal images obtained from infrared thermography devices. However, a non-contact resting blood pressure estimation method is required because blood pressure is generally measured in the resting state without inducing acute stress. Day-long blood pressure variations include short-term variations due to acute stress and long-term variations in circadian rhythms. The aim of this study is to estimate resting blood pressure from facial thermal images by separating and excluding short-term variations related to acute stress. To achieve this, short-term blood pressure variations components related to acute stress on facial thermal images were separated using independent component analysis. Resting blood pressure was estimated with the extracted independent components excluding the short-term components using multiple regression analysis. The results show that the proposed approach can accurately estimate resting blood pressure from facial thermal images, with a 9.90 mmHg root mean square error. In addition, features related to resting blood pressure were represented in the nose, lip, and cheek regions.

Occupational Risk Exposures and Adverse Health Findings Among Farmers in Southern Philippines

Introduction. Pesticides are widely used in the agricultural sector to increase production by cutting costs and improving product quality. However, these chemicals come with serious health effects when individuals are exposed to large quantities at once or low amounts over time.
 Objective. This study aimed to identify the health symptoms and physical assessment findings affecting farmers from their repeated occupational exposure to pesticides in a rural region in the Philippines.
 Methods. This research study used a cross-sectional design, and samples were drawn based on a multistage sampling of 387 agricultural workers. The target site was in the southern Philippines, and the sample was selected randomly from the identified municipalities. Survey questionnaires were given to the respondents, and a physical assessment was made by medical doctors and trained registered nurses. The data were encoded using SPSS™ 13.0. The statistics used were both descriptive and inferential.
 Results. The farmers used pesticides in their farms with an average of 2.3 days per week (SD: 2.13). The mean total spraying time was 3.07 hours (SD: ± 14.76) per day. The average amount of pesticide used in an application was 1.33 L per application (SD: ± 6.53). Sixty-three percent (63%) had spills while spraying, and 47% reported having spilled pesticides while mixing. Farmers were assessed and found to have experienced symptoms and exhibited physical assessment findings surrounding the following body systems: general, EENT, neurologic, gastrointestinal, respiratory, cardiovascular, and integumentary systems. Abnormalities in laboratory parameters were also observed among the respondents. The mini-mental state examination was done to test if the respondents showed signs of cognitive impairment. The results showed that most respondents (93.95%) had normal cognitive function, while 6.05% of respondents had some level of cognitive impairment. Associations were also tested using Phi Coefficient, and certain pesticide exposure variables were associated with farmers' physical findings and symptoms experienced by farmers.
 Conclusion. This study translates pesticide’s health impact by identifying the common symptoms experienced by farmers and concerning physical assessment findings. The study found that farmers suffered from various symptoms concerning the general health, eye, ears, nose, and throat region, neurological system, gastrointestinal system, respiratory system, cardiovascular system, and the integumentary system. In addition, the laboratory parameters of the participants also exhibited abnormalities indicative of exposure and possible adverse effects from pesticides.

An Ancient Adenosine Receptor Gains Olfactory Function in Bony Vertebrates.

Nucleotides are an important class of odorants for aquatic vertebrates such as frogs and fishes, but also have manifold signaling roles in other cellular processes. Recently, an adenosine receptor believed to belong to the adora2 clade has been identified as an olfactory receptor in zebrafish. Here, we set out to elucidate the evolutionary history of both this gene and its olfactory function. We have performed a thorough phylogenetic study in vertebrates, chordates and their sister group, ambulacraria, and show that the origin of the zebrafish olfactory receptor gene can be traced back to the most recent common ancestor of all three groups as a segregate sister clade (adorb) to the adora gene family. Eel, carp, and clawed frog all express adorb in a sparse and distributed pattern within their olfactory epithelium very similar to the pattern observed for zebrafish that is, consistent with a function as olfactory receptor. In sharp contrast, lamprey adorb-expressing cells are absent from the sensory region of the lamprey nose, but form a contiguous domain directly adjacent to the sensory region. Double-labeling experiments confirmed the expression of lamprey adorb in nonneuronal cells and are consistent with an expression in neuronal progenitor cells. Thus, adorb may have undergone a switch of function in the jawed lineage of vertebrates towards a role as olfactory receptor.

Yaw effects on train aerodynamics on a double-track viaduct: A wind tunnel study

The aerodynamic performance of a scaled high-speed train model mounted on a double-track viaduct was studied through a wind tunnel test. The pressure distribution of different loops and the centerline on the streamlined nose region, as well as the aerodynamic load coefficients of the leading car were explored under yaw effects ranging from Β=-30° to Β=30°. Results showed that Reynolds effects became independent when the wind speed surpassed 40 m/s, the corresponding Re of which equals 6.51 x 105. The pressures recorded along the centerline of train nose for the upstream scenario, was more sensitive to the yaw effects as the largest pressure difference gradually broadened against yaw angles. In addition, the pressure coefficients along the centerline and symmetrical taps of the loops, approximately fit a quadratic relationship with respect to yaw angles. The presence of the tracks and viaduct decks somehow mitigated the intensity of the airflow at downstream side. The experimental test also revealed that, the upstream configuration provided higher mean side force, yawing, and rolling moments up to Β=20° whereas over that angle the force and moments exhibited the opposite performance. 40 m/s, the corresponding Re of which equals 6.51

Heat Transfer in a Rib Turbulated Pin Fin Array for Trailing Edge Cooling

Abstract Ribs were added into a pin fin array for a uniquely new cooling concept enabled through additive manufacturing. Heat transfer measurements are obtained using the thermochromic liquid crystal technique in a trapezoidal duct with pin fins and rib turbulators. Three pin blockage ratios and four rib heights at Reynolds numbers between 40,000 and 106,000 were tested. The Nusselt number augmentation is generally higher at the longer base of the trapezoidal duct. The same high heat transfer trend is seen at the columns closer to the longer base of the trapezoidal duct than on the shorter base. Through the length of the duct, the flow shifts from the nose region to the larger opening on the opposite wall. Also, it is observed that increasing the blockage ratio as well as increasing the rib height has a positive impact on heat transfer as ribs act as additional extended surfaces and alter the near-wall flow field. The heat transfer augmentation of pins and ribs is found to not be equal to the sum of both: Both heat transfer mechanisms are highly non-linear, thus cannot be superimposed. The observed heat transfer augmentation of the combined cases exceeded over the rib and pin only cases by up to 100%, but the weighted friction factor also doubled. The combination of ribs and pins is an excellent concept to achieve more uniform cooling over an array at higher levels when pressure drop is not of concern.

Automatic gaze to the nose region cannot be inhibited during observation of facial expression in Eastern observers

Humans can extract a great deal of information about others very quickly. This is partly because the face automatically captures observers’ attention. Specifically, the eyes can attract overt attention. Although it has been reported that not only the eyes but also the nose can capture initial oculomotor movement in Eastern observers, its generalizability remains unknown. In this study, we applied the “don’t look” paradigm wherein participants are asked not to fixate on a specific facial region (i.e., eyes, nose, and mouth) during an emotion recognition task with upright (Experiment 1) and inverted (Experiment 2) faces. In both experiments, we found that participants were less able to inhibit the initial part of their fixations to the nose, which can be interpreted as the nose automatically capturing attention. Along with previous studies, our overt attention tends to be attracted by a part of the face, which is the nose region in Easterner observers.

Nasopharyngeal hirudiniasis: a hidden culprit\u2014a case report

BackgroundLeech infestation in the nose or nasopharyngeal region is a rare occurrence. The most common known cause is drinking water from natural water sources like ponds and rivers. Its hidden location of attachment in the nasopharynx and its uncommon occurrence make it easy to miss during diagnosis.Case presentationWe present a case of a 61-year-old male patient with recurrent unilateral epistaxis without any apparent cause. He was diagnosed with leech infestation in the nasopharynx on endoscopic examination. This article reports the management of nasopharyngeal leech infestation and safety measures for this animate foreign body retrieval.ConclusionA vigilant approach, thorough history, and examination are a must. Though leeches are simple to remove most of the time, certain necessary precaution should be kept in mind for better management and prevention of further complications.

The part-whole effect in super-recognisers and typical-range-ability controls

Face recognition skills are distributed on a continuum, with developmental prosopagnosics and super-recognisers at the bottom and top ends, respectively. Holistic processing propensity is associated with face recognition ability and may be impaired in some developmental prosopagnosics and enhanced in some super-recognisers. Across two experiments we compared holistic processing of 75 super-recognisers and 89 typical-range ability controls using The Part-Whole Effect (PWE) paradigm. A subgroup of super-recognisers demonstrated enhanced PWEs in the nose region, suggesting they integrate the nose into the holistic face percept more effectively than controls. Focussed processing of the nose region, an optimal viewing position to extract the holistic properties of faces, has previously been associated with superior face recognition, and this may partly explain the superiority of some super-recognisers. However, a few super-recognisers generated extreme nose region performance patterns in an opposite direction across both experiments, suggesting their superiority is driven by alternative mechanisms. These results support proposals that super-recognition is associated with heterogeneous underlying processes.

Contactless Core-temperature Monitoring by Infrared Thermal Sensor using Mean Absolute Error Analysis

Aims and Objectives: Usually, the increase in temperature of an individual indicates the possibility of being infected with a disease that might be risky to other people, such as coronavirus. Traditional techniques for monitoring body core-temperature require body contact either by oral, rectum, axillary, or tympanic means, which are unfortunately considered intrusive in nature as well as causes of contagion. Therefore, sensing human core-temperature non-intrusively and remotely is the objective of this research. Background: Nowadays, increasing the level of medical sectors is a necessary target for research operations, especially the development of integrated circuits, sensors, and cameras, to make life easier. Methods: The solution is proposed as an embedded system consisting of the Arduino microcontroller, which is trained with a model of Mean Absolute Error (MAE) analysis for predicting Contactless Core-Temperature (CCT), which is the actual body temperature. Results: The Arduino microcontroller was connected to an Infrared-Thermal sensor named MLX90614 as an input signal and was connected to the LCD to display the CCT. To evaluate the proposed system, experiments were conducted on 31 subjects, and contactless temperature from the three face sub-regions was sensed, including forehead, nose, and cheek. Conclusion: Experimental results demonstrated that CCT could be measured remotely from the human face, including three face sub-regions, among which the forehead region should be preferred (a smallest error rate of 2.3%), rather than nose and cheek regions (2.6 % and 3.2% error rate, respectively) for CCT measurement due to the lowest error rates achieved.

Oral manifestations of Hydroa vacciniforme-like lymphoproliferative disorder: a clinicopathological study of a Peruvian population.

Hydroa vacciniforme-like lymphoproliferative disorder (HVLPD) is a chronic Epstein-Barr virus (EBV)-positive lymphoproliferative disease which may either present as an indolent condition or progress to a systemic T-cell lymphoma. All HVLPD diagnosed over a 10-year period were retrieved, and clinical data regarding sex, age, oral and systemic manifestations, and clinical follow-up were obtained. Immunohistochemistry was done in order to characterize the lymphoid cells, and in situ hybridization was used to demonstrate the presence of EBV. Eleven cases were included, with a male predominance and a mean age of 25.1years. Buccal mucosa and the lips were the most affected oral sites, appearing as painful ulcers. All patients exhibited facial oedema, usually affecting the lips, nose and periorbital region. The clinical course was gradual but progressive, with four patients having fever and 3 showing lymphadenopathies. All cases showed a moderate to severe lymphocytic infiltrate with angiotropism, angiocentricity and epidermotropism. Two cases affecting the lip skin exhibited a periappendageal lymphocytic infiltrate. Few large pleomorphic cells were found, surrounded by smaller and medium-sized lymphoid cells, as well as reactive plasma cells, macrophages, neutrophils and eosinophils. All lesions exhibited a cytotoxic T-cell (CD8+) phenotype with a variable proliferative index. All cases were associated with EBV, and all patients died due to complications of the disease. HVLPD is a rare disease that may show oral involvement with a cytotoxic T-cell phenotype, and is strongly associated with EBV. As shown in this series, HVLPD may show aggressive clinical behaviour.

Evaluation of the incidence of inflammatory and tumor pathology of nose and nasal sinus region.

Inflammatory and nasal-sinus tumor pathology is a field of great interest in rhinology worldwide. The aim of the paper is to determine the prevalence of nasal and nasal-sinus inflammatory diseases, as well as nasal and nasosinusal rhinosinusitis tumors, in association or not with inflammatory diseases, using histopathological (HP) examination. It is also desired to identify the association of chronic inflammatory pathology with the tumor one, considering inflammation and immunodeficiency as local susceptibility factors. A retrospective study was performed on a group of 254 patients hospitalized between 2018–2019 in Department of Otorhinolaryngology, Emergency County Hospital, Târgu Mureş, Romania. Based on the clinical and HP examination, the distribution by inflammatory pathologies was made as follows: 175 nasal polyposis, 108 chronic rhinitis, 39 sinusitis – strictly affecting the sinus and 28 chronic polyposis rhinosinusitis – nasal and sinus association. Considering the evaluation of the incidence of benign tumor pathology, the following were found: out of the total examined cases, 4% squamous papilloma, 4% exophytic papilloma, 44% Schneiderian papilloma, 4% benign fibrous histiocytoma, 18% hemangioma, 4% hamartoma, and 4% osteoma were identified. The incidence of malignant tumors is 26% squamous cell carcinoma, 12% intestinal adenocarcinoma, 2% nonintestinal type adenocarcinoma, 2% large B-cell lymphoma, 2% plasma cell, 2% olfactory neuroblastoma, 7% malignant melanoma, 16% basal cell carcinoma. The paper draws attention to the increased incidence of tumor and inflammatory pathology both individually and in combination, considering the involvement of the clinical correlation with the HP result completed, if necessary, with immunohistochemical examinations, for a precise diagnosis.

Lockdown 1.0 mishaps in Bangalore: an observational study on head and neck injuries

<p class="abstract"><strong>Background:</strong> The government of India imposed a nationwide lockdown from 24 March to 14 April 2020, to contain the highly contagious corona virus. The aim of the study was to reflect upon the psychosocial impact of lockdown 1.0 on the population in terms of assaults, self-inflicted injuries and road traffic accidents during the 21 days of lockdown.</p><p class="abstract"><strong>Methods:</strong> This was a prospective observational study done in KIMS hospital and research centre during nation-wide lockdown 1.0 i.e. from 24 March to 14 April 2020. Patients who visited emergency medicine department with history of assault, self-inflicted injuries, road traffic accidents sustaining injuries to ear, nose, neck and other regions of the face were included in the study.</p><p class="abstract"><strong>Results:</strong> A total of 32 patients who sustained injuries in the head and neck region during the 21-day lockdown period and came to our institution were included. Out of the 32 injuries, 6 injuries were to the ear, 12 to nose,5 to the neck region and 9 to other facial regions. There were 18 assault cases causing head and neck injuries,3 were self-inflicted wounds and rest were injuries due to road traffic accidents.</p><p class="abstract"><strong>Conclusions:</strong> Several problems emerged following the forced quarantine to combat COVID-19. These inexorable circumstances which are beyond normal experience, lead to stress, anxiety and a feeling of helplessness in all. There is a need to ameliorate people’s access to mental health support services geared towards providing measures for developing healthy coping mechanisms during such crisis.</p>

Impact of 1% chlorhexidine gluconate bathing and emollient application on bacterial pathogen colonization dynamics in hospitalized preterm neonates - A pilot clinical trial.

BackgroundChlorhexidine gluconate (CHG) body washes and emollient application may modulate bacterial pathogen colonization and prevent neonatal hospital-acquired infections.MethodsThis pilot, non-randomized, open-label trial, enrolled preterm neonates (1000-1500g; day 1-3 of life) at a tertiary hospital in Cape Town, South Africa. Participants were sequentially allocated to 4 trial arms (n=20 each): 1% aqueous CHG (CHG), 1% CHG plus emollient (CHG+EM), emollient only (EM) and standard of care (SOC: no antiseptic/emollient). Trial treatment/s were applied daily for 10 days (d) post-enrolment, documenting neonatal skin condition score. Anterior nose, neck, umbilical and perianal swabs for bacterial culture were collected at d1, d3, d10 and d16 post-enrolment, (±1 day), reporting pathogen acquisition rates and semi-quantitative bacterial colony counts. (ClinicalTrials.gov identifier: NCT03896893; trial status: closed).FindingsEighty preterm neonates (mean gestational age 30 weeks [SD 2]) were enrolled between 4 March and 26 August 2019. The bacterial pathogen acquisition rate (comparing d1 and d16 swabs) varied from 33·9% [95%CI 22·9-47·0] at the umbilicus, 39·3% [95%CI 27·6-52·4] at the neck, to 71·4% [95%CI 58·5-81·7] at both the nose and perianal region. At d10, CHG babies had reduced bacterial density detected from neck, umbilicus, and perianal swabs compared to other groups (see Table 3). Following intervention cessation, colonization density was similar across all trial arms, but S. aureus colonization was more prevalent among EM and CHG+EM babies. Neonatal skin condition score improved in babies receiving emollient application (EM: -0·87 [95%CI 0·69-1·06] and CHG+EM: -0·73 [0·45-0·99]), compared to the SOC and CHG arms (Table 2); no CHG-related skin reactions occurred.InterpretationBacterial colonization density was significantly reduced in babies receiving 1% CHG washes but colonization levels rebounded rapidly post-intervention. Emollient application improved skin condition but was associated with higher rates of S. aureus colonization.FundingSouth African Medical Research Council; National Institutes of Health (TW010682).

Development of a New Reusable and User-Centric General-Use Mask for Averting Respirator Supply Crisis in the Healthcare Sector

Healthcare workforce implements general-use masks for low and/or moderate barrier protection in sterile environments. However, these masks are often unavailable in pandemic situations due to a strain on supply/demand logistics. In such cases, establishing development of respiratory protection within the organization may be beneficial. Our work presents one such novel method of designing customized masks by considering facial anthropometrics of the specific sample population. In fact, such a design may provide a more efficient fit with the users as compared to currently available masks, which are often designed for a much wider range of people. The protocol followed a fast-paced method of obtaining facial data (~2.8 mins/participant), and a data-driven approach for extracting design profiles. We have demonstrated the same through a pilot study, which involved recruiting a group of 7 participants with ethnic and gender variation. A total of 7 landmarks representing zygomatic process of the temporal, angle of mandible, zygomatic arch, nasal-maxillary region, and apex of nose, mid-lips and the chin were selected. Analysis included determining closest, mid-points, and farthest points for each landmark among the entire datasets. Results indicated that the landmarks: Apex of Nose, Midlips and Chin represented a straight-line path with a lateral shift of ~4.58 inches between the closest and farthest dimensions from the nose point, based on which the facepiece was designed. Meanwhile, geometric transformations consisting of several construction lines and bisectors were used along with obtained data from zygomatic arch, process of temporal, and angle of mandible landmarks to determine the contours of the straps for securing the mask. Our design addresses common issues in masks like discomfort around the ear, humidity, and reuse, by provision of a novel mounting method, fabric-based materials, and sleeve for replacement of filters, respectively. The proposed concept of the mask and the methods followed could also be applied in broader applications including manufacturing/construction and also daily-life activities besides hospital environments.

Analysis of the occurrence and distribution of primary and recurrent basal cell carcinoma of head and neck coupled to the assessment of tumor microenvironment and Sonic hedgehog signaling.

Often, basal cell carcinoma (BCC) displays local aggressiveness, and when developed in the head and neck presents with deep tissue invasion and recurrence. Previous studies have pointed out the necessity of systematic assessment of primary and recurrent BCC based on a better understanding of the biology and function of its microenvironment. Although hedgehog-dependent tumor cells signaling to the underlying stroma, and vice versa, have been demonstrated to be implicated in the pathogenesis of BCC, little is known about peculiarities of the tumor microenvironment and the above-mentioned signaling in the head and neck. The occurrence and distribution of 79 primary and recurrent BCCs developed in the head and neck region were estimated. The data were coupled with the immunohistochemical assessment of type IV collagen, laminin, alpha-smooth muscle actin (α-SMA), and Sonic hedgehog (Shh). The frequency of the mixed BCCs and the predominance of the nose and cheek region affection by primary and recurrent tumors were demonstrated. Furthermore, the increase of peritumoral and entire stromal α-SMA immunoreactivity in the mixed recurrent BCC was confirmed using statistics. We found the increase of strong levels of Shh immunoexpression in the aggressive variants of BCC – infiltrative, mixed, and micronodular. Surprisingly, we confirmed the upregulation of Shh paralleled by the downregulation of α-SMA immunoexpression in the superficial subtype of the tumor. Our results suggest the necessity of further studies assessing the nature of the tumor along with the peculiarities of signaling in BCCs of head and neck.

Novel local feature extraction for age invariant face recognition

Age variation is a major problem in the area of face recognition under uncontrolled environments such as pose variation, lighting effects, expression etc. Most of the works of this area have used discriminative feature descriptors. These discriminative feature descriptors are based on their fixed encoding which considers pixels of different radial widths for feature extraction and ignores some radii pixels which hold important discriminative information for age variation. Therefore, consideration of all the pixels of the local region is necessary for important feature extraction in the case of age invariant face recognition. This paper introduces a novel local feature descriptor to find difference pattern and dual directional relation pattern for age invariant face recognition. The proposed descriptor is applied over the preprocessed face images and its parts-periocular region i.e. left and right eye, mouth and nose region of a face image. The proposed difference pattern and dual directional relation pattern descriptors extract the texture features on the local region of a specified dimension. Chi-square metric has been used for finding the similarity between probe and gallery images. Evaluation of the proposed feature descriptor has been performed on two standard challenging datasets FGNET and MORPH for age invariant face recognition. The proposed descriptor performed well and outperformed to the existing age invariant face recognition state-of-the-art methods on FGNET dataset and also performed well on MORPH dataset.

LARNet: Real-Time Detection of Facial Micro Expression Using Lossless Attention Residual Network.

Facial micro expressions are brief, spontaneous, and crucial emotions deep inside the mind, reflecting the actual thoughts for that moment. Humans can cover their emotions on a large scale, but their actual intentions and emotions can be extracted at a micro-level. Micro expressions are organic when compared with macro expressions, posing a challenge to both humans, as well as machines, to identify. In recent years, detection of facial expressions are widely used in commercial complexes, hotels, restaurants, psychology, security, offices, and education institutes. The aim and motivation of this paper are to provide an end-to-end architecture that accurately detects the actual expressions at the micro-scale features. However, the main research is to provide an analysis of the specific parts that are crucial for detecting the micro expressions from a face. Many states of the art approaches have been trained on the micro facial expressions and compared with our proposed Lossless Attention Residual Network (LARNet) approach. However, the main research on this is to provide analysis on the specific parts that are crucial for detecting the micro expressions from a face. Many CNN-based approaches extracts the features at local level which digs much deeper into the face pixels. However, the spatial and temporal information extracted from the face is encoded in LARNet for a feature fusion extraction on specific crucial locations, such as nose, cheeks, mouth, and eyes regions. LARNet outperforms the state-of-the-art methods with a slight margin by accurately detecting facial micro expressions in real-time. Lastly, the proposed LARNet becomes accurate and better by training with more annotated data.