Distinguishing shadows from surface boundaries using local achromatic cues
Fig 9
Effects of removing texture information from image patches on responses of the GFB and FRF models.
(a) Left: Original occlusions. Middle: Averaging the pixel intensities on each side of the occlusion boundary removes texture information while leaving Michelson contrast unchanged (no tex). Right: Blurring the sharp edge created by texture removal (blur). (b) Log-odds ratio of being an occlusion for the original images (horizontal axis) versus the texture-removed images (vertical axis). We see images for which the model predicts a high occlusion probability experience a drastic decrease in occlusion probability when texture is removed. Top: oset-1, Bottom: oset-2. (c) Same as (b) but for blurred texture-removed patches.