Infrared Imaging Guidance Research Articles

Research on Target Detection and Automatic Extraction of Region of Interest in Infrared Serial Images

Infrared imaging guidance is a research hotspot in accurate terminal guidance field now. An idea on automatic extraction of region (ROI) of interest in infrared serial images is proposed in order to treat intelligently infrared serial images which are captured. The target detection algorithm of target is researched and the applying scene of the target detection algorithm is confirmed based on analysis for the features of infrared serial images. According to differences of detection algorithm for infrared serial images between static and dynamic scenes, the corresponding detection and extraction algorithm of ROI is discussed respectively. The algorithms are all simulated in real scene. A new stepwise approaching and recurring threshold search algorithm based on two-dimensional maximum entropy principle was proposed by studying recurring formulation optimized of two-dimensional maximum entropy in order to realize to detect target and extract ROI of serial images under complex background. The algorithm above realizes automatic extraction of ROI in Infrared serial images. The results improve the efficiency of accurate terminal guidance and they have good application value by practicing.

Image-Guided Osteoplastic Frontal Sinusotomy

A 6-ft Caldwell radiograph template and transillumination, typically, are used to elucidate the frontal sinus outline for osteoplastic frontal sinusotomy (OFS). These techniques can be fraught with imprecision. The consequences of imprecise OFS may result in significant complications. Computer-aided surgery may offer a safe and accurate alternative to these techniques in selected cases. Several disadvantages were noted with early computer-aided assistance. Current infrared and electromagnetic systems have eliminated many of these disadvantages. We describe our technique and experience with an infrared image-guidance system (The LandmarX Evolution; Medtronic Xomed, Jacksonville, FL) to create a precise OFS that maximizes exposure while minimizing morbidity. We describe the use of an infrared image guidance system, the LandmarX Evolution for OFS in three cases. The LandmarX Evolution allowed for accurate placement of the OFS in each of the three cases and successful treatment of two symptomatic frontal sinus osteomas and a recurrent inverted papilloma. No complications were encountered. Image-guided OFS results in a confident and accurate entry into the frontal sinus. Image-guided OFS creation should be considered for select cases (i.e., complete opacification and altered anatomy) where performing an OFS by standard techniques may increase the complication rate. More experience with the technique and increased accessibility to image-guided equipment must be made possible before establishing this technique as a standard.