Added realocation of space for ndarray on conversion of 3 channels to 4 and 4 to 3. Now setting the vglimage to desired number of channels
Added realocation of space for ndarray on conversion of 3 channels to 4 and 4 to 3. Now setting the vglimage to desired number of channels

ddantas/visiongl,ddantas/visiongl,ddantas/visiongl,ddantas/visiongl