Principles Of Visual Perception Research Articles

Parallels between visual and textual processing

Campbell argues that the perception of unity in written discourse is part of a more general perceptual phenomenon and is, in fact, analogous to the perception of visual unity. Specifically, she argues that Grice's Maxim of Relation operates analogously to the Gestalt principle of Continuity in visual perception. However, she also concludes that Grice's other three maxims have no analogs in Gestalt theory. We believe Grice's other maxims actually do have analogs in principles of visual perception, but the relationship between the two is opaque because they are stated in domain-specific terms. We suggest meta-principles that connect the two domains.

Man-made object recognition based on visual perception

A computational model for recognition of three-dimensional (3-D) man-made objects based on visual perception principles is presented. In this approach, object faces are used as perceptual entities in accordance with the perceptual phenomena of face-shape constancy and face-pose consistency. Face-shape constancy is modeled by continuous maps in which topological proximity is the major consideration. To accommodate 3-D space knowledge on viewpoint consistency, a perceptual view space is developed in which face-pose consistency from an arbitrary view point can be deduced qualitatively.

Thinning approach for noisy digital patterns

Many problems difficult to solve by traditional computer algorithms can be explored by the principles of human visual perception. From the hint of human visual symmetry, a thinning approach for noisy digital patterns is presented in this paper. It includes three main algorithms. Algorithm 1 is designed to find the effective circular range, for each pixel, containing the maximum effective information. Algorithm 2 is designed to compute the symmetry score of the pixel distribution in the circular range and convert the symmetry information into a gray-scale image. Algorithm 3 provides a modified gray-scale thinning algorithm for thinning the gray-scale image to obtain a connected thin line. Experiments show that the thinning results obtained by the proposed method are properly acceptable whenSNR ≥ 2.2 dB and the connectedness of the thin line can be preserved.

Un modèle de l'illusion perceptive : simulation versus expérimentation

A model of perceptive illusion : experimentation versus simulation. This paper presents an experimentation where the computer has the role of subject and simulation tool. The computer has been used for the elaboration and validation of an operating model of a few structural principles of human visual perception. This model is based on the Gestalt theory. The studied structural process is considered as a dynamic system. Wich is emulated by the computer with recurrent networks. Different experiments on a specific class of primary perceptive illusion images allowed the conception and the validation of a model of perception. The principle of this model have been re-used as the basis for the conception of a program for identification of global linear structures in landscape aerial images.

The Evolution of My Kinetic Work

The artist comments on a series of his artworks that show an evolution from minimal self-tensile constructions to the artistic exploration of the principles of visual perception. Various kinetic and transformable structures, including “self-erected” constructions, are described. His techniques of manipulating flat images are shown in a series of collages in which geometric patterns define the forms of cut elements and phantom objects emerge inside the source picture. Working with new constructive or visual principles, the artist looks for the most elementary ways of realizing methods of achieving particular forms.

An Integrated, Problem-Solving Approach to Low Vision Training

An approach is proposed to help rehabilitation clients acquire the understanding and skills for making optimal use of their remaining vision for travel in unmodified environments. Against a background of competent, confident use of nonvisual travel strategies, “structured discovery learning” exercises can help clients experience the value and limitations of their remaining vision in a variety of environments. The article argues that the theoretical foundation for this approach is well grounded in accepted visual perception principles. Practical training activities are also outlined.

Perceptual Components of Computer Displays

An understanding of the psychological principles of visual perception can help computer scientists improve man-machine communication.

The principles of visual perception and their clinical application to denture esthetics

The perceptual principles can free dentists from the confusion existing in the field of dental esthetics and enable them to confidently approach the task of enhancing their patients' appearance. Principles may be applied to all and they eliminate the personal attributes of talent and the need for learning specific formulas for achieving an esthetic result. “The determination of the form principles in a specific example of design means, in a sense, the elimination of the personal element. With this element removed the residue represents merely the planning knowledge possessed by the artist. ... Invariably the higher or more perfect the art, the richer is the remainder when the personal element is removed.” 17 The eye is a perfectly competent evaluator and errors will become obvious if a long contemplative look is taken at the tooth arrangement during the try-in appointment. A real need for a very detailed, almost histologic approach to dental esthetics exists. Indeed, the perceptive principles may be regarded as the cellular elements of which the tissue of denture esthetics is composed. As familiarity with the principles increases, so does proficiency in their application. With experience, the basic shape and characteristic of the dental tooth arrangement can be visualized even before a single tooth is placed in wax. All that remains is a detailed examination at try-in to look for minor perceptive conflicts, and this too becomes less of a task with the training of the eye to really see. The field of dental esthetics is of critical importance to the well-being of patients, and one of dentistry's greatest challenges is to completely eliminate the delivery of static, poorly planned, clumsily executed dentures. This challenge is each individual dentist's responsibility and cannot be subcontracted. The laboratory technician is a valuable ally, but he has no decision-making role in the area of denture esthetics. Fisher 18 has best stated the objectives that must be achieved in denture esthetics. In his words, “It is the purpose of those who have labored diligently and long in the pursuit of a more workable basic principle in esthetics to encourage all of those whose tasks take them into the field of prosthodontics to consider the opportunity to lift the patient out of the category of a geometric figure and restore to him his true quality of a living and breathing man or woman, with an individual personality and either the dignity of his years or the freshness of his youth.” This is the proper note on which to close, or perhaps to begin.

CLASS DEMONSTRATION OF VISUAL DEPTH PERCEPTION WITH THE ALBINO RABBIT.

The young albino rabbit is a good S with which to demonstrate the principles of visual depth perception. It is small enough for a portable apparatus and behaviorally consistent enough for a reliable class demonstration. The results of a demonstration using a portable visual cliff apparatus to four laboratory sections with 10-wk.-old albino rabbits as Ss are presented. On the whole, one animal was used for each section. After a series of observations planned by E, students were allowed to request additional trials of depth-related behavior using conditions they chose themselves. The behavior of the rabbits during E-controlled and student-controlled trials is described.