How can we do multi-point warping in opencv

Question

Usually we use 4 points for correcting perspective of an image. How can we use more number of points to convert a very distorted edged rectangle into a straight rectangle in opencv. Basically I'm trying to warp an image with a piece of cloth. The cloth edges are not straight. Illustrated through the following image

Twirl

hi Sum-ai can you find a way to do it ? – Hamitosemitic

Hi, yes, try something called "Affine Transformation" – Twirl