RPi-PWM and basic imaage processing

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diff --git a/macros/ImageProcessing/core/CV_CreateImage.sci b/macros/ImageProcessing/core/CV_CreateImage.sci
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+function img = CV_CreateImage(width,height,bit_depth,no_of_channels)
+// function to create an image object of given size and type
+//
+// Calling Sequence
+//     CV_CreateImage(image_size,bit_depth,no_of_channels)
+//
+// Parameters
+//     image_size: width and height of image
+//	   bit_depth: Bit depth of image elements
+//	   no_of_channels: no of channels per pixels
+//
+// Description
+//		This function can be used to create opencv image object. For more info
+//	    about bit depth and channels,please refer to OpenCV documentation 
+// Examples
+//		CV_CreateImage([320 240], "8U", 1)	//to create image of the size 320*240
+//		pixels with 8 bit unsigned each pixels and gray scale image  
+//
+// See also
+//     CV_LoadImage
+//
+//
+// Authors
+//     Siddhesh Wani
+//
+img = 0;
+// This is curretly dummy function. It provides no functionality but is required 
+// for providing support for generating C code for OpenCV
+
+endfunction