【opencv.js】MatVector、通道分离与合并

JavaScript 写法类似于 C++ 写法。

相关内容详细介绍请移步官网：【https://docs.opencv.org/3.3.1/de/d06/tutorial_js_basic_ops.html】

MatVector

let mat = new cv.Mat();

// Initialise a MatVector
let matVec = new cv.MatVector();

// Push a Mat back into MatVector
matVec.push_back(mat);

// Get a Mat fom MatVector
let cnt = matVec.get(0);

mat.delete(); 
matVec.delete(); 
cnt.delete();

通道分离与合并

let src = cv.imread("canvasInput");
let rgbaPlanes = new cv.MatVector();

// Split the Mat
cv.split(src, rgbaPlanes);

// Get R channel
let R = rgbaPlanes.get(0);

// Merge all channels
cv.merge(rgbaPlanes, src);

src.delete(); 
rgbaPlanes.delete(); 
R.delete();