Please answer this with matlab code. If you cannot finish it, donot choose it!

This is the image need to change

And this is task two, you can just write the difference between task 3

3. Task 3 (10') transforming Use the command histeq which enhances the contrast of the images by transforming the values in an intensity image. Compare the current result with the one obtained in Task 2. Comment and briefly explain your finding. the current result with the 2. Task 2 (15) Write a function to generate a piece-wise linear mapping transform to enhance the contrast of im_Idr, verify the effectiveness of the designed function in the following terms: (1) subjectively, and (2) objectively by checking the histogram of the enhanced image with respect to the histogram of the reference image, and (3) evaluating the PSNR with respect to the reference image. Include also in your report the intensity mapping function which you used. 3. Task 3 (10') transforming Use the command histeq which enhances the contrast of the images by transforming the values in an intensity image. Compare the current result with the one obtained in Task 2. Comment and briefly explain your finding. the current result with the 2. Task 2 (15) Write a function to generate a piece-wise linear mapping transform to enhance the contrast of im_Idr, verify the effectiveness of the designed function in the following terms: (1) subjectively, and (2) objectively by checking the histogram of the enhanced image with respect to the histogram of the reference image, and (3) evaluating the PSNR with respect to the reference image. Include also in your report the intensity mapping function which you used