在jcanvas中如何操纵drawImage层以将instagram像滤镜一样应用到图像上

Question

I have drawn a image on canvas using jcanvas drawImage method and this image is a layer

//Js part

$('canvas').drawImage({
      source: 'js/BN44094.jpg',
      layer: true,
      x: 0, y: 0,
      width: 800,
      height: 400,
      name: 'backImage',
      fromCenter: false
    });

//Html Part

<canvas id="canvas" width=800 height=400></canvas>

I want to apply instagram like image filters on this image, can some one guide me with this??

Answer 1

看一下这个非常清楚的解释 ，然后根据您的需要，可以执行简单的 操作， 例如绿色滤镜和用于高级卷积的像素处理