Photo-Sketching

A small code that can convert an image to a pencil sketch like image. An image is basically an array of numbers to Python. So we can perform a variety of matrix manipulations to get some very interesting results. This code shows how to reduce an image into a ‘pencil’ outline.

Steps Followed

• Read the input image as gray scale image
• Remove any noise using a gaussian filter
• Create a negative image (invert the image)
• Dodge these two images(gray and inverted images). These two images reinforces some edges and complements some edges. Alternatively, these two images can be blended with different weights
• Show the image and wait for a keystroke to close the display

Results