小编mad*_*ika的帖子

我的代码:如何管理不同色调的脸部的RGB值,以及如何应用？这段代码会改变脸部的颜色和头发,但我想1.只是面部除了头发的颜色.

    -(void)changeSkinColorValue:(float)value WithImage:(UIImage*)needToModified
    {

        CGContextRef ctx;

        CGImageRef imageRef = needToModified.CGImage;
        NSUInteger width = CGImageGetWidth(imageRef);
        NSUInteger height = CGImageGetHeight(imageRef);
        CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
        //unsigned char *rawData = malloc(firstImageV.image.size.height * firstImageV.image.size.width * 10);

        CFMutableDataRef m_DataRef = CFDataCreateMutableCopy(0, 0,CGDataProviderCopyData(CGImageGetDataProvider(firstImageV.image.CGImage)));
        UInt8 *rawData = (UInt8 *) CFDataGetMutableBytePtr(m_DataRef);
        int length = CFDataGetLength(m_DataRef);
        NSUInteger bytesPerPixel = 4;
        NSUInteger bytesPerRow = bytesPerPixel * firstImageV.image.size.width;
        NSUInteger bitsPerComponent = 8;

                CGContextRef context1 = CGBitmapContextCreate(rawData, firstImageV.image.size.width, firstImageV.image.size.height, bitsPerComponent, bytesPerRow, colorSpace,                     kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big);
        CGColorSpaceRelease(colorSpace);

        CGContextDrawImage(context1, CGRectMake(0, 0, firstImageV.image.size.width, firstImageV.image.size.height), imageRef);

        NSLog(@"%d::%d",width,height); …