DrawImage() {
var image_data = this.ctx.getImageData(0, 0, this.canvas.width, this.canvas.height);
var data = image_data.data;
var length = data.length;
if (length != 4 * this.imgW * this.imgH) {
console.log("length(%d) != 4 * ImgW(%d) * ImgH(%d) : %dx%d", length, this.imgW, this.imgH, this.canvas.width, this.canvas.height);
return;
}
var wh = this.imgW * this.imgH;
for (var i = 0; i < wh; i++) {
var k = 4 * i;
var c = 255 - this.trainingDataImage[wh * this.imgIdx + i];
data[k] = c;
data[k + 1] = c;
data[k + 2] = c;
data[k + 3] = 255;
}
this.ctx.putImageData(image_data, 0, 0);
this.imgIdx++;
if (this.imgIdx < this.trainingImgCnt) {
setTimeout(this.DrawImage.bind(this), 1);
}
}