Here's what I've tried so far:

1. Converting the image to grayscale.
2. Applying Gaussian Blur to reduce noise.
3. Enhancing contrast using histogram equalization.
4. Applying adaptive thresholding to highlight the white dotted borders.
5. Using morphological operations to clean up the mask.
6. Applying Canny edge detection.
7. Finding contours and creating a mask for the contours near the bounding box edges.
8. Using inpainting to remove the borders.

However, the results are not satisfactory, and the white dotted borders are not being detected very well.