How im2bw works in image processing when we change the level ??

Question

Akhilesh Singh 2014-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/141558-how-im2bw-works-in-image-processing-when-we-change-the-level

评论： Akhilesh Singh 2014-7-12

I want to know how im2bw works??

when changing the level : im2bw(image, level)

there is some equation or formula which help .......when we changing the thresholding level values??

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Answer 1

Image Analyst 2014-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/141558-how-im2bw-works-in-image-processing-when-we-change-the-level#answer_144805

编辑：Image Analyst 2014-7-12

在 MATLAB Online 中打开

Type

>> edit im2bw

and you'll have your answer. That's the sourse code for the function. Basically it converts level to the range that the data class is in and then thresholds like bw=input>level.

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Akhilesh Singh 2014-7-12

thank u

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Answer 2

Laila Kazemi 2014-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/141558-how-im2bw-works-in-image-processing-when-we-change-the-level#answer_144795

So level is the threshold. Any pixel with intensity greater than the threshold is equal to 1 and pixels with intensity smaller than the threshold are set to zero. No equations its a logic process.