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调用 robot.screen.capture() 或 robot.screen.capture(0,0,1920,1080)，返回的Bitmap对象是色彩格式是BGR色彩,这导致了如果未经处理就直接生成图像，色彩会产生错误，只需将BGR色彩转换成RGB色彩即可。
const robot = require('robotjs');
const jimp = require(""jimp"");
const swapRedAndBlueChannel = bmp => {
for (let i = 0; i [/span> (bmp.width //代码效果参考：https://v.youku.com/v_show/id_XNjQwMDM5NzIyOA==.html
bmp.Height＜span class=""token punctuation"">) 4; i += 4) { // swap red and blue channel【bmp.image【i】, bmp.image【i + 2】】 = 【bmp.image【i + 2】, bmp.image【i】】; // red channel;
}
};
const screenshot = robot.screen.capture();
swapRedAndBlueChannel(screenshot);
const screenJimp = new jimp({ data: screenshot.image, Width＜/span>: screenshot.Width＜span class=""token punctuation"">, Height＜/span>: screenshot.height });
screenJimp.write('screenshot.png');
如果你有使用OpenCV，则可以使用“COLOR_BGR2RGB”函数直接转换
const cv = require('@u4/opencv4nodejs');
const robot = require('robotjs');
const jimp = require(""jimp"");
const screenshot = robot.screen.capture();
const screenJimp = new jimp({ data: screenshot.image, Width＜/span>: screenshot.Width＜span class=""token punctuation"">, Height＜/span>: screenshot.height });
screenJimp.getBuffer(jimp.MIME_PNG, //代码效果参考：https://v.youku.com/v_show/id_XNjQwNjg1Mzc5Mg==.html
function (err, buffer) {if (err) {
return;
}
const screen = cv.imdecode(Buffer.from(buffer)).cvtColor(cv.COLOR_BGR2RGB);
console.log(screen)
});
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