Smart image resizing with color-based entropy and gradient operators

A system for resizing a digitally represented color image, the system comprising:

• a memory;
• a storage medium for storing data;
• and
• a processor in communication with said storage medium and said memory, said processor executing machine readable instructions for performing the method of:
• receiving a color image to be resized, the received image comprising a plurality of pixels each having a respective luminance and chrominance values;
• determining, by a processor, a respective importance value for each pixel in the received color image, each importance value for a given pixel being based upon luminance values and at least one chrominance value of pixels in a neighborhood of pixels surrounding the given pixel;
• identifying selected pixels in the color image based upon respective importance values of the selected pixels;
• removing selected pixels from the color image to create a resized color image;
• and
• providing the resized color image to an image output device.

A method for resizing a digitally represented color image, the method comprising:

• receiving a color image to be resized, the received image comprising a plurality of pixels each having a respective luminance value and respective at least one chrominance value;
• applying a luminance spatial high pass filter to the luminance values of pixels in a respective neighborhood of each pixel to compute a high pass filtered luminance component for the each pixel;
• applying a respective chrominance spatial high pass filter to the at least one chrominance value to compute respective at least one high pass filtered chrominance components for the each pixel;
• combining the high pass filtered luminance component and the respective at least one high pass filtered chrominance components to produced a respective importance value for the each pixel;
• identifying selected pixels in the color image based upon respective importance values of the selected pixels;
• removing selected pixels from the color image by seam carving of the color image, the seam carving comprising identifying seams of pixels based upon the respective importance values of pixels within the seams of pixels to create a resized color image;
• and
• providing the resized color image to an image output device.