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POHow to change the skin color of face from the source image in ios?
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  1. POHow to change the skin color of face from the source image in ios?
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    copied!<p>MY code: How to manage RGB value for differet shades of face,and how to apply? this code will change the color of face along with hair,but i want 1.only face to be colored excluding hair.</p> <pre><code> -(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); // for(int ii = 0 ; ii &lt; 250 ; ii+=4) //{ for(int ii = 0 ; ii &lt; length ; ii+=4) { //NSLog(@"Raw data %s",rawData); int R = rawData[ii]; int G = rawData[ii+1]; int B = rawData[ii+2]; // NSLog(@"%d %d %d", R, G, B); //if( ( (R&gt;60)&amp;&amp;(R&lt;237) ) || ((G&gt;10)&amp;&amp;(G&lt;120))||((B&gt;4) &amp;&amp; (B&lt;120))) // if( ( (R&gt;100)&amp;&amp;(R&lt;186) ) || ((G&gt;56)&amp;&amp;(G&lt;130))||((B&gt;30) &amp;&amp; (B&lt;120))) // if( ( (R&gt;188)&amp;&amp;(R&lt;228) ) || ((G&gt;123)&amp;&amp;(G&lt;163))||((B&gt;85) &amp;&amp; (B&lt;125))) // if( ( (R&gt;95)&amp;&amp;(R&lt;260) ) || ((G&gt;40)&amp;&amp;(G&lt;210))||((B&gt;20) &amp;&amp; (B&lt;170))) //new code...... if( ( (R&gt;0)&amp;&amp;(R&lt;260) ) || ((G&gt;0)&amp;&amp;(G&lt;210))||((B&gt;0) &amp;&amp; (B&lt;170))) { rawData[ii+1]=R;//13; rawData[ii+2]=G;//43; rawData[ii+3]=value;//63 } } ctx = CGBitmapContextCreate(rawData, CGImageGetWidth( imageRef ), CGImageGetHeight( imageRef ), 8, CGImageGetBytesPerRow( imageRef ), CGImageGetColorSpace( imageRef ), kCGImageAlphaPremultipliedLast ); imageRef = CGBitmapContextCreateImage(ctx); UIImage* rawImage = [UIImage imageWithCGImage:imageRef]; //UIImageView *ty=[[UIImageView alloc]initWithFrame:CGRectMake(100, 200, 400, 400)]; //ty.image=rawImage; //[self.view addSubview:ty]; [secondImageV setImage:rawImage]; CGContextRelease(context1); CGContextRelease(ctx); free(rawData); } </code></pre>
 

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