Surface orientation from texture: ideal observers, generic observers and the information content of texture cues
نویسندگان
چکیده
منابع مشابه
Surface orientation from texture: ideal observers, generic observers and the information content of texture cues
Perspective views of textured, planar surfaces provide a number of cues about the orientations of the surfaces. These include the information created by perspective scaling of texture elements (scaling), the information created by perspective foreshortening of texels (foreshortening) and, for textures composed of discrete elements, the information created by the effects of both scaling and fore...
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We describe an ideal observer model for estimating "shape from texture" which is derived from the principles of statistical information. For a given family of surface shapes, measures of statistical information can be computed for two different texture cues--density and orientation of texels. These measures can be used to predict lower bounds on the variance of shape judgements of "ideal" and h...
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In order to quantify the ability of the human visual system to use texture information to perceive planar surface orientation, I measured subjects' ability to discriminate planar surface slant (angle away from the fronto-parallel) for a variety of different types of textures and in a number of different viewing conditions. I measured the subjects' discrimination performance as a function of sur...
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Texture provides an important source of information about the three-dimensional structure of visible surfaces, particularly for stationary monocular views. To recover 3d structure, the distorting effects of projection must be distinguished from properties of the texture on which the distortion acts. This requires that assumptions must be made about the texture, yet the unpredictability of natur...
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-This paper presents a computational model and a practical algorithm for determining the three-dimensional orientation of a planar surface from visual texture information. The model consists of three parts: (1) a local spatial frequency based texture representation; (2) a model describing the projection of surface texture to image texture; and (3) a solution of the texture projection model for ...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1998
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(97)00324-6