CLAHE (Contrast Limited Adaptive Histogram Equalization) algorithm in LabVIEW?

[Billy901104]

Hello community!

I am working on a project which requires me to apply CLAHE to the image. I am wondering if LabVIEW can do things like this or not? 

I found a vi called Histogram Equalization. However, after trying this, I don't think it's anywhere near the algorithm of CLAHE. 

Moreover, I tried using DLL method mentioned in this post, still no luck.

Anyways, I am desperately seeking for help, don't know if LabVIEW is capable of performing CLAHE with its own vis or I need to find other methods to achieve this.

Here's the process:

I first use the line scanner (Keyence LJX8020) to scan a surface. Once I obtain the surface information, I convert it from 2D array to U16 image, as shown in Fig1.

Comparing Fig1 with Fig2, which is processed with CLAHE algorithm, the middle part is very different. It's missing a lot of details. 

I also attach the test piece we use to scan below.

[GerdW]

Hi Billy,

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@Billy901104 wrote:

I first use the line scanner (Keyence LJX8020) to scan a surface. Once I obtain the surface information, I convert it from 2D array to U16 image, as shown in Fig1.

Comparing Fig1 with Fig2, which is processed with CLAHE algorithm, the middle part is very different. It's missing a lot of details. 

I also attach the test piece we use to scan below.

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It seems you forgot to attach all of your promised attachments…

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@Billy901104 wrote:

Anyways, I am desperately seeking for help, don't know if LabVIEW is capable of performing CLAHE with its own vis or I need to find other methods to achieve this.

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LabVIEW is a full-featured programming language and you can implement any algorithm you need!

[Billy901104]

Ah! You are totally right. I did forgot to attach the files. My apologies.

Here's the files! 

[santo_13 · Accepted solution]

If you're not into implementing the algorithm in LabVIEW, you could call the algorithm in Python from LabVIEW using the Python node.

[Billy901104]

Thanks for replying to my post.

Actually I wanted to implement the algorithm into LabVIEW. However, after weeks of trying, sadly still nothing. Guess it's out of my league.

I am looking for a quick way to do this and python node is a really good idea! I'll try it out later! 

I already tried using MATLAB node but nothing. Maybe I'll have some luck on Python node.

Anyways, thanks for responding!