Disable chrome cache from ChromeDevTools
- press Ctrl+Shift+I
- under Network tab
- check 'Disable Cache'
- Apply a bilateral filter to reduce the color palette of the image.
- Convert the original color image into grayscale.
- Apply a median blur to reduce image noise.
- Use adaptive thresholding to detect and emphasize the edges in an edge mask.
- Combine the color image from step 1 with the edge mask from step 4.