Features with a high spatial frequency are only visible when viewing them close up, and those with low spatial frequencies are only visible at a distance.
高空间频率的容貌特征只有在近距离的情况下才能看出,而那些低空间频率的图像特征只能在远距离的情况下可见。
Combining pictures of the two produces a single image which changes when the viewer moves closer or farther away from the screen.
当我们把这两种图像叠加在一起时,观察者可以通过调整自己与屏幕的距离,而看到不同的图像。
Dr Oliva's group say these images not only reveal vision problems, but can also highlight how the brain processes information.
奥利瓦博士的团队称,这类图片不仅能暴露视力问题,还显示了我们的大脑是如何处理信息的。
In one study, participants were shown hybrid images for just of 30 milliseconds, and only recognised the low spatial resolution, or blurry, component of the image.
在一项研究中,当参与者只有30毫秒观察混合图像时,他们只能看到低空间分辨率的,或是模糊的局部图像内容。
But when the images were shown for 150 milliseconds, they only recognised the image that was produced in fine detail, or in high spatial resolution.
但当图片显示150毫秒时,他们只能分辨出用细线画出的图像,或是高空间分辨率的图像。
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