自然视觉的过程是:视网膜成像后,图像被传送到大脑后部叫做视觉皮层的地方,在那里进行信息处理。
The first nerve cells it passes through react only to simple stimuli, such as edges slanting atparticular angles.
图像经过的第一组神经元只能对简单的视觉刺激作出反射,例如物体朝某些角度倾斜的边缘。
They fire up other cells, further into the visual cortex, which react to simple combinations ofedges, such as corners.
第一组神经元又将兴奋传给视觉皮层更深处的神经元,这些神经细胞可以对简单的物体轮廓作出反应,例如空间中的角落。
Cells in each subsequent area discern ever more complex features, with those at the top ofthe hierarchy responding to general categories like animals and faces, and to entire scenescomprising assorted objects.
越往后,神经元能识别的图像特征越复杂,最高级别神经区域可以对动物和脸等总体类别作出反应,最后将包罗万象的场景整合到一起。
All this takes less than a tenth of a second.
而整个过程只需要不到十分之一秒。
The outline of this process has been known for years and in the late 1980s Yann LeCun, nowat New York University, pioneered an approach to computer vision that tries to mimic thehierarchical way the visual cortex is wired.
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