不同空间频率通道的深度知觉及其质地的影响

我们设计了四种不同质地的随机点立体图对(RDS),并按照Wilson的空间频率通道的频带,分别利用Butterworth滤波器及Gabor函数对之进行了数字滤波处理,然后进行各种左右眼配对观察.得结果如下:1、Gabor函数滤波后图对的匹配结果好于Butterworth滤波器滤波后的图对.2、滤波后图对的匹配效果与图象质地有关.3、不同滤波的图对匹配大多也能形成立体感.4、在体视不同通道图对的匹配中,右眼对图象的高频成分更为敏感.

THE INFLUENCE OF TEXTURE ON THE DEPTH PERCEPTION IN DIFFERENT SPATIAL FREQUENCY CHANNELS

Four sets of random-dot stereograms with different texture were digitally filtered to pass wilson's four spatial frequency channels by Butter worth filter and Gabor function filter. Filtered stereograms were paired in various combinations and examined under a stereoscope to see if any depth could be perceived.we observed that.1. The stereopsis of stereograms filtered by Gabor function is better than those filtered by Butterworth filter.2. The stereopsis of filtered stereograms are related with texture.3. when stereograms with different spatial frequency components matched, most stereograms could produce stereopsis.4. when stereograms with different spatial frequency components matched, the right eye is more sensitive to the high frequency components of stereograms than left eye is.