Image Enhancement Algorithm Based on Logarithmic Transform Histogram Matching With Spatial Equalization

Hello everyone, I am trying to realize the project through an article. Even though I've been trying 5-6 hours a day for about 2 weeks, I still couldn't get the right result. The real problem is that I don't know where the problem is. I am attaching my code and the link of the article. My project's deadline is 2 days later. And my Enhancement diagram is attached too. Can anyone help me?

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