Experimental studies of stereo vision conversion process from disparity to depth

以下两点进行了检查，以澄清立体视的机制。纸板裁切效果。当我们在自然场景中看到物体（如人）时，物体通常被认为是平面的。在这种情况下，必须检测与对象相关的双眼视差，但是该检测没有反映到深度感知。我们研究了这种现象，并确定了从主观距离的视差缩放，以及每个对象内的深度和对象之间的深度之间的对比度作为这种现象的两个可能的来源。反向视差错觉。这是著名的空心脸错觉的立体图片版本。当立体像对的两幅图像互换时，虽然视差极性发生了反转，但我们通常不会注意到深度反转。我们用不同类型的刺激考察了这一现象，并阐明了这一现象与对凸形物体的一般偏好之间的关系.自由融合物体的感知大小。当我们自由融合立体图像时，物体的主观大小会发生变化。我们通过较少主观线索的刺激来检验这一现象，并阐明了聚散度变化对大小知觉的贡献，以及深度知觉与大小知觉之间的关系.对象内部的深度和对象之间的深度之间的关系。上述现象，如纸板剪切效应和反向视差错觉，可以用物体内部的深度和物体之间的深度之间的关系来理解。我们试图建立这些现象之间的理论联系，并确定了重要的概念。

The following two points were examined to clarify the mechanism for stereopsis.1. Card board cut-out effect. When we see objects such as people within a natural scene, the objects often are perceived flat. In this situation, binocular disparities related to the objects must be detected, but the detection is not reflected to depth perception. We examined this phenomenon and identified the scaling of disparity from subjective distance, and the contrast between the depth within each objects and the depth between the objects as two possible source for this phenomenon.2. Reversed disparity illusion. This is stereo-picture version of the famous hollow face illusion. When the two pictures of a stereo-pair were interchanged, although the disparity polarity was reversed, we usually don't notice depth reversal. We examined this phenomenon with various types of stimuli, and clarify the relationship between this phenomenon and general preference for convex objects.3. The perceived size of objects with free fusing. When we free-fuse stereo picutures, the subjective size of objects changes. We examined the phenomenon by using stimuli with little subjective cues and clarified the contribution of vergence change to size perception, and the relationship between depth perception and size perception.4. Relationship between the depth within objects, and the depth between objects. The above mentioned phenomenon, such as Card board cut-out effect and Reversed disparity illusion can be understood with the framework of relationship between the depth within objects, and the depth between objects. We tried to establish theoretical relationship between these phenomenon and identified important concepts.