Show HN: Wave-based non-line-of-sight computational imaging in Julia

Re:Show HN: Wave-based non-line-of-sight computational imagi... by billconan on Tuesday August 27, 2019 @03:49PM (#20813752)

wait, why can it see color? if this algorithm is based on the speed of light traveling (similar to ultrasonic), I would think it won't show color? the resulting image shows the printed 1,2,3 on that paper.

is that because light reflects differently across the same paper due to different colors (black vs. white)?

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Re:Show HN: Wave-based non-line-of-sight computational imagi... by kd5bjo on Tuesday August 27, 2019 @04:00PM (#20813852)

It uses the time of arrival to determine where a particular reflection came from, but it can also observe the intensity of that reflection to determine reflectivity.

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Re:Show HN: Wave-based non-line-of-sight computational imagi... by IshKebab on Tuesday August 27, 2019 @06:06PM (#20814905)

You could easily generate a colour image by using a red, green and blue laser sequentially. But... they haven't done that. It's all black and white so I don't know why you think it can see colour?

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Re:Show HN: Wave-based non-line-of-sight computational imagi... by elihu on Tuesday August 27, 2019 @09:08PM (#20815996)

I think the mouseover text on the color picture is a mistake. The article labels the blurry grayscale image as a reconstruction and the color image as a regular image.

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Re:Show HN: Wave-based non-line-of-sight computational imagi... by Arnavion on Wednesday August 28, 2019 @02:54AM (#20817508)

The two panels in the README are a single image, which is why they share the mouseover text.

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Re:Show HN: Wave-based non-line-of-sight computational imagi... by 3JPLW on Tuesday August 27, 2019 @05:42PM (#20814704)

Not color, but reflectivity.

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