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| Number | Title | Issue Date |
| 7672518 | Use of frequency transform in the analysis of image sensors A method for detecting and removing noise from an image, the method includes the steps of applying a frequency transform to the image for obtaining a magnitude image; comparing a threshold value to values of the magnitude image for obtaining thresholded values; sett... | 03/02/2010 |
| 7672519 | Use of frequency transforms in the analysis of image sensors A method for detecting and removing noise from an image, the method includes the steps of applying a frequency transform to the image for obtaining a magnitude image; applying a threshold value to values of the magnitude image for obtaining threshold values; setting... | 03/02/2010 |
| 7508994 | Method for detecting streaks in digital images The present invention uses five regions of interest, 4 corners and 1 center to do Fourier Transform analysis to mark rough location of the streaks, if there is any. It sets the small window around the center in each Fourier Transform ROI to zero to mask the cluster ... | 03/24/2009 |
| 7315322 | Method of testing the uniformity of an image sensor A method for testing an image sensor for photoresponse uniformity, the method includes the steps of providing a light source having inherent non-uniform light intensity characteristics; providing a light sensing device for measuring an intensity response of the ligh... | 01/01/2008 |
| 6389441 | Two dimensional moving average filter A two dimensional moving averaging filter is provided using a computational element coupled to a memory means which contains an electronic version of a two dimensional array of pixel values with N rows and M columns and a temporary memory buffer having a ... | 05/14/2002 |
| 6208764 | Rank filter using a linked-list to link elements in a memory array in numerical order A rank filter suitable for use in real-time signal processing and image processing applications, for example, for improving an image. The rank filter can be implemented in software or hardware, employed in single- and multi-dimensions, and within any spec... | 03/27/2001 |
