UIColor *whiteColor = [UIColor colorWithRed:1.f green:1.f blue:1.f alpha:1.f];
// extract bright colors and avoid results if close to white color
self.colorArr = [self.imageView.image extractColorsWithMode:JYExtractModeOnlyDistinctColors avoidColor:whiteColor];

UIColor *color = [self.imageView.image pixelColorAtLocation:point formImageRect:self.imageView.frame];

BOOL isEqual = [self.imageViewOne.image isEqualToImage:self.imageViewTwo.image];
if (isEqual) {
//...Do something..
}
else {
//...Do something..
}

// Create QRcode image
UIImage *QRcodeImage = [UIImage QRCodeImageFromString:@"Job-Yang" imageSize:500];
// Recognition QRcode in the image
NSString *info = [QRcodeImage identifyQRCode];

// Compressed to 500KB
NSData *compressData = [self.originalImage compressImageToByte:500 * 1024];

UIColor *whiteColor = [UIColor colorWithRed:1.f green:1.f blue:1.f alpha:1.f];
// 提取较附近更亮的主色，并忽略太接近白色的提取结果
self.colorArr = [self.imageView.image extractColorsWithMode:JYExtractModeOnlyDistinctColors avoidColor:whiteColor];

UIColor *color = [self.imageView.image pixelColorAtLocation:point formImageRect:self.imageView.frame];

BOOL isEqual = [self.imageViewOne.image isEqualToImage:self.imageViewTwo.image];
if (isEqual) {
//...Do something..
}
else {
//...Do something..
}

// 创建二维码图片
UIImage *QRcodeImage = [UIImage QRCodeImageFromString:@"Job-Yang" imageSize:500];
// 识别图片中的二维码
NSString *info = [QRcodeImage identifyQRCode];

// 压缩到500KB
NSData *compressData = [self.originalImage compressImageToByte:500 * 1024];