ppu-ocv/operations/warp.js

A type-safe, modular, chainable image processing library built on top of OpenCV.js with a fluent API leveraging pipeline processing.

import{cv,registry}from"../index";export function warp(img,options){if(!options.points||!options.bbox){throw new Error("Invalid options: points and bbox are required")}const{points,bbox}=options;let imgWarp=new cv.Mat;let targetWidth=bbox.x1-bbox.x0;let targetHeight=bbox.y1-bbox.y0;let destArray=[0,0,targetWidth-1,0,targetWidth-1,targetHeight-1,0,targetHeight-1];let srcArray=[points.topLeft.x,points.topLeft.y,points.topRight.x,points.topRight.y,points.bottomRight.x,points.bottomRight.y,points.bottomLeft.x,points.bottomLeft.y];let dest=cv.matFromArray(4,1,cv.CV_32FC2,destArray);let src=cv.matFromArray(4,1,cv.CV_32FC2,srcArray);let M=cv.getPerspectiveTransform(src,dest);let dsize=new cv.Size(targetWidth,targetHeight);cv.warpPerspective(img,imgWarp,M,dsize);M.delete();src.delete();dest.delete();img.delete();return{img:imgWarp,width:imgWarp.cols,height:imgWarp.rows}}registry.register("warp",warp);