Medical image enhancement method for hardcopy prints
AssigneeEastman Kodak Company
InventorsXiaohui Wang, Richard L. VanMetter
Life of this patent
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Abstract
A method for the enhancement of medical images for hardcopy prints comprising the steps of: obtaining a medical image in digital format; conducting a plurality of operations for Human Visual System (HVS)-based edge enhancement with each operation having a uniquely specified high frequency amplification function and range such that edges are more enhanced in the shadow region than in the highlight region; adjusting image tone scale, for reflection prints increase the contrast in the shadow region and decrease the contrast in the highlight region, and for transparency prints decrease the contrast in the shadow region and increase the contrast in the highlight region; sending the processed image to the output device for hardcopy prints.
Claims35
A method for the enhancement of medical images for hardcopy prints comprising the steps of:
- obtaining a medical image having a shadow region and a highlight region in digital format;
- conducting a plurality of operations for Human Visual System (HVS)-based edge enhancement with each operation having a uniquely specified high frequency amplification function and range such that edges are more enhanced in the shadow region than in the highlight region;
- adjusting image tone scale, for reflection prints increase the contrast in the shadow region and decrease the contrast in the highlight region, and for transparency prints decrease the contrast in the shadow region and increase the contrast in the highlight region;
- sending the processed image to an output device for producing hardcopy prints;
- and
- wherein said conducting step is based on Pn−1=Ln+αn*Hn, and
- wherein Ln and Hn are the respective low frequency and high frequency components of image Pn at processing step n, αn is the amplification function and n≧0.
The method according to claim 18 using a kernel shape is based on K x K y = P y P x ;
- where Px and Py are the pixel width and pixel height, respectively;
- Kx and Ky are the kernel width and height, respectively.
A computer storage product comprising:
- a computer readable storage medium having a computer program for performing a method for the enhancement of medical images for hardcopy prints comprising the steps of:
- obtaining a medical image in digital format;
- conducting a plurality of operations for Human Visual System (HVS)-based edge enhancement with each operation having a uniquely specified high frequency amplification function and range such that edges are more enhanced in the shadow region than in the highlight region;
- adjusting image tone scale, for reflection prints increase the contrast in the shadow region and decrease the contrast in the highlight region, and for transparency prints decrease the contrast in the shadow region and increase the contrast in the highlight region;
- sending the processed image to the output device for hardcopy prints.
Dependencies are inferred from the claim text.