[특허]Image compression and decompression using the PIXON method

Pixon Imaging, Inc.

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Image compression and decompression using the PIXON method

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-009/46 G06K-009/36
미국특허분류(USC)	382/249; 382/232; 382/233
출원번호	US-0596975 (2008-04-17)
등록번호	US-8396313 (2013-03-12)
국제출원번호	PCT/US2008/060692 (2008-04-17)
§371/§102 date	20091021 (20091021)
국제공개번호	WO2008/134256 (2008-11-06)
발명자 / 주소	Puetter, Richard
출원인 / 주소	Pixon Imaging, Inc.
대리인 / 주소	Musick, Eleanor M.
인용정보	피인용 횟수 : 1 인용 특허 : 19

초록
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A method is provided for decompressing an image originally compressed using a known compression technique. An original compressed image file is defined by a plurality of locations that correspond to image data. A set of smooth test images is created by iteratively applying a plurality of different size PIXON® kernels to each location of a starting image beginning with a smallest size kernel. Each smooth test image is compressed using the known compression technique, then compared against the original compressed image at each location of the image to determine a goodness-of-fit of the compressed smooth test image to each location of the original compressed image file. For each location, the smooth test image that has the largest size kernel that passes a pre-determined goodness-of-fit criterion is selected for a given location of the decompressed image. A compression method utilizes the PIXON® method for optimization of knot points within an image. The optimized knot points are used to interpolate image intensity between the knot points.

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1. A method for decompressing an image originally compressed using an industry-standard compression method, the method comprising: inputting an original compressed image file having a plurality of locations corresponding to image data into a processor having a memory and software stored therein for decompressing an image and executing a PIXON® method;decompressing the original compressed image using a corresponding industry-standard decompression method to produce an original decompressed image data file;initializing the PIXON® decompressed image with the industry standard decompressed file;smoothing the original decompressed image using the smallest kernel selected from a plurality of different kernels to produce a first smooth test image;compressing the first smooth test image using the industry-standard compression method;comparing the first compressed candidate image to the original compressed image file to determine a goodness-of-fit within a predetermined tolerance at each of the plurality of locations within the original compressed image file;accepting the first smooth test image as the PIXON® decompressed image for each location at which the goodness-of-fit is within the predetermined tolerance and leaving the PIXON® decompressed image unchanged at all other locations;performing the steps of smoothing and comparing for each remaining kernel of the plurality of different kernels to produce a plurality of different candidate images, wherein, following each iteration, the corresponding smooth test image is accepted as the PIXON® decompressed image at each location at which the goodness-of-fit is within the predetermined tolerance and all other locations are left with the previous PIXON® decompressed image, and wherein the resulting PIXON® decompressed image remains after the final iteration;storing the resulting PIXON® decompressed image in the memory; andoutputting the resulting PIXON® decompressed image to display device. 2. The method of claim 1, wherein the plurality of locations comprises pixels. 3. The method of claim 1, wherein the plurality of locations comprises a block of pixels. 4. The method of claim 1, wherein the steps of smoothing and comparing are performed in parallel for all kernels of the plurality of kernels. 5. A method for generating a decompressed image from a compressed image file that was compressed using a known compression method, the method comprising: inputting into a processor an original compressed image file having a plurality of image locations, each image location corresponding to image data within the image file, wherein the processor is in communication with a memory having software stored therein for decompressing an image and executing a PIXON® method using a plurality of different kernels;decompressing the original compressed image using a decompression method corresponding to the known compression method to produce an original decompressed image data file;initializing the PIXON® decompressed image with the industry standard decompressed file;smoothing the original decompressed image file using the smallest kernel selected from the plurality of different kernels to produce a first smooth test image;compressing the first smooth test image using the industry-standard compression method;comparing the first compressed smooth test image to the original compressed image file to determine a goodness-of-fit within a predetermined tolerance at each of the plurality of locations within the original compressed image file;accepting the first smooth test image as the PIXON® decompressed image for each location at which the goodness-of-fit is within the predetermined tolerance and leaving the PIXON® decompressed image unchanged at all other locations;before or after the step of accepting, performing the steps of smoothing, compressing and comparing for each remaining kernel of the plurality of different kernels to produce a plurality of different smooth test images, wherein, following each iteration, the corresponding smooth image is accepted as the PIXON® decompressed image at each location at which the goodness-of-fit is within the predetermined tolerance and all other locations are left with the previous candidate image, and wherein the resulting PIXON® decompressed image remains after the final iteration;storing the resulting PIXON® decompressed image in the memory; andoutputting the resulting PIXON® decompressed image to display device. 6. The method of claim 5, wherein the plurality of locations comprises pixels. 7. The method of claim 5, wherein the plurality of locations comprises a block of pixels. 8. A method for compressing images, comprising: inputting an image file comprising image data into a processor and memory having software stored therein for executing a PIXON® method, wherein the image file comprises a plurality of locations corresponding to the image data;executing a first algorithm that utilizes information density within the data images identified by the PIXON® method to calculate one or more image data points to generate an image map that represents a model of the received image data;executing a second algorithm to optimize the one or more image data points, including the positions and intensities of the image data points to reduce the number of image data points;re-optimizing the reduced number of image data points;determining if a goodness-of-fit between the locations corresponding to the input image data and the one or more image data points remains within a predetermined tolerance at each location within the image data;accepting the one or more image data points as the candidates for image compression at the locations that are within the predetermined tolerance and use corresponding portions of the received image data elsewhere; andgenerating a compressed image file by combining the accepted image data point for all locations within the input image. 9. The method of claim 8, wherein the one or more image data points comprise knot points. 10. The method of claim 8, wherein the first algorithm comprises an image interpolation algorithm. 11. The method of claim 8, wherein the second algorithm comprises a simplex (or other) minimization algorithm. 12. The method of claim 8, wherein a model of the received image data is constructed through linear interpolation of image intensity between the knot points.

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Yahil, Amos. Method and system for statistical modeling of data using a quadratic likelihood functional. USP20180910068327.

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Image compression and decompression using the PIXON method

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이 특허에 인용된 특허 (19)

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