Method and system for generating image compression quantization matrices

The method for compressing an image having v blocks, the method comprising:

• capturing said image having blocks;
• transforming said blocks to a discrete cosine transform array;
• retrieving a model metric that is comprised of values that correlate to spatial frequency combinations sensitive to the human visual system;
• said model metric comprises a matrix with values for vertical and horizontal orientations and for each orientation has values for low, mid and high frequency bands in just-noticeable-difference levels;
• determining a quantization coefficient matrix;
• grouping said quantization coefficient matrix with said model metric to generate a quantization matrix;
• quantizing said discrete cosine transform array with said quantization matrix to create a quantized transform array;
• and
• encoding said quantized transform array.

An image compression system for generating quantization matrices, comprising:

• a quantization coefficient matrix and a model metric;
• said model metric is comprised of values that correlate to spatial frequency combinations sensitive to the human visual system;
• said model metric comprises a matrix with values for vertical and horizontal orientations and for each orientation has values for low mid and high frequency bands in just-noticeable-difference levels;
• a quantizer that groups said quantization coefficient matrix with said model metric to generate a quantization matrix.