【摘要】 用微机化的伪随机点立体图对发生器产生静态和动态随机点立体图对(RDS),显示在左右两个示波器上。RDS图形中的元素密度可以改变。具有正常立体视的10名被试通过立体镜观察这些图形,测量双眼融合能产生完整立体图形感知所需最小的元素密度,即密度容限。 设计了三个实验用以检测改变RDS图形的空间参数对密度客限的影响。第一个实验,在静、动态RDS图形下,改变视差图形面积;第二个实验,改变视差图形的形状;第三个实验,改变视差图形的周长。 实验结果表明,双眼深度感知要求一定的元素密度容限,视差图形的大小和形状对密度容限有一定程度的影响。静态和动态RDS图形的密度容限也不相同。 本文利用RDS的整体立体感知特性和空间频率通道理论对实验结果进行了讨论。更多还原

【Abstract】 A static and a dynamic random-dit stereogram(RDS) pair is produ-ced respectively by a microcomputerized pseudo RDS generator and displa-yed on corresponding left and right oscilloscopes, observed by two eyesrespectively. 10 subjects with normal stereoscopic vision viewed by a stereoscopyand the smallest tolerant element density in which binocular fusion canproduce clear perception of form in depth was determined. Three experiments were designed to determine the effect of changingspatial parameters of RDS patterns on the limitation of the element den-sity. The first was the change of pattern area for the static and the dy-namic RDS respectively. The second was the change of pattern form andthe third was the change of circumference of pattern with disparity. The result indicates that binocular stereoscopic perception can tolera-te a certain limitatity of element density, changing of size and form ofpattern affects tolerant element density to a certain extent. The limitati-on of tolerant element density for static RDS differs for dynamic one. The experimental result was discussed using global stereoscopic cha-racteristic and spational frequency channel.更多还原