JavaScript OpenCV inRange 颜色过滤

示例

• https://docs.opencv.org/3.4/db/d64/tutorial_js_colorspaces.html

使用

let src = cv.imread('canvasInput');
let dst = new cv.Mat();
let low = new cv.Mat(src.rows, src.cols, src.type(), [0, 0, 0, 0]);
let high = new cv.Mat(src.rows, src.cols, src.type(), [150, 150, 150, 255]);
// You can try more different parameters
cv.inRange(src, low, high, dst);
cv.imshow('canvasOutput', dst);
src.delete();
dst.delete();
low.delete();
high.delete();

1. src 是输入的数组
2. lowerb 是包含 lowerb 的最小值数组或分量
3. upperb 是包含 upperb 的最大值数组或分量
4. 输出的数组，大小和通道数与 src 一样，并且是 CV_8V 的类型

参考文章

• https://blog.csdn.net/qq78442761/article/details/83016909
• https://stackoverflow.com/questions/69360003/place-an-image-over-another-image-using-opencv-js
• https://stackoverflow.com/questions/68624755/opencvjs-convert-python-to-javascript
• https://blog.csdn.net/duwangthefirst/article/details/79971212
• https://stackoverflow.com/questions/27684267/hough-transform-line-location-opencv