- Fix function convert image to gray
 On branch ConvolutionMatrix
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/datamodel/ImageProcess.java
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/gaborfilter/GaborFilter.java
	modified:   RecognitionFingerprint/test/src/com/vnexit/fingerprint/datamodel/TestImageProcess.java
Merge branch 'ConvolutionMatrix' into develop