An Open-Cv task and Tutorial to Convert the given image to Cartoon and Pencil Sketch

Cartoon Effect

Aim

To cartoonize an Image by lightenting the colors and detecting sharp edges

Procedure

Blur the image thereby lightening the colors and apply suitable filters to detect sharp edges

Methodology

To Lighten the Imgae

Blur The Image using Bilateral Filter

To Detect Sharp Edges

Convert Image to grayscale

Apply Median Blur to blur the Image

Apply Apaptive Treshold for a min_treshold which opencv adjusts automatically

Edges are finally obtained from Adaptive Treshold

Final Result

Bitwise And of the Image with Sharp edges and Blurred Color image will give us a nice Cartoonized Image

Click here to see demo

Pencil Effect

Aim

To create a pencil Sketch of an Image by using basic filters

Procedure

Apply Image Blending Techniques such as Dodging and Burning and we are good to go.

Methodology

Convert the given image into grayscale

Invert the grayscale to get negative image

Apply Gaussian Blur to the negative image

Blend the grayscale image(we got from rgb image in step 1) with the blurred negative image using a color dodge

Final Result

A nice Pencil Sketch is generated

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Click here to see demo