拍摄图像时亮度是否改变，改变图像中的物体大小? [英] Whether the brightness change while taking a image, change the object size in a image?

问题描述

我有图像A(一个红球的图像).让我们以A1作为A的亮度增加视图.让A2作为A的亮度降低视图.我需要比较A1和A2.我测量它的计数器时，红球的尺寸可能会改变.

我尝试过的事情:

通过更改我检查的阈值.但它显示的轮廓大小几乎没有差异.我不知道我在哪里错了?

I am having the image A(image of one red ball). lets take A1 as the brightness increased view of A. let take A2 as brightness decreased view of A. I need to compare A1 and A2. while I measure its counter, is there possibility in size change of the red ball.

What I have tried:

by changing threshold I checked. but it shows size of contours with little different. i don''t know where I am wrong?

推荐答案

通常，您期望大小随亮度的增加而有所增加...

如果亮度为零，则希望得到全黑的图像，如果亮度为1，则希望得到全白的图像...

通常，根据光源的不同，球的侧面会变暗，因此它们首先会消失.

Usually, you expect size to increase somewhat with brighness...

If brightness is zero, you expect a totally black image and if it is one, you expect a white image...

Usually, the side of a ball would be darker depending on the light source so they would first disappears.

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