Image analysis – Image enhancement or restoration – Edge or contour enhancement
Reexamination Certificate
2005-12-13
2011-10-04
Mehta, Bhavesh (Department: 2624)
Image analysis
Image enhancement or restoration
Edge or contour enhancement
C345S204000, C345S100000
Reexamination Certificate
active
08031964
ABSTRACT:
The present invention relates to a display method and device for improving the luminous efficiency of a matrix display using a pulse-width modulation, or PWM, technique. According to the invention, in order to reduce the blurring effect, the display method comprises the following steps: —detecting the moving object contours within said sequence of video images, —modifying, for each image of said sequence and each contour detected, the gray level of at least one pixel adjacent to said contour by assigning to it an intermediate level in the range between its initial gray level and that of the other pixel adjacent to said contour, and—displaying said modified image sequence. Application to matrix displays comprising a LCOS, OLED or DMD valve array.
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D.Doyen et al: “Compensation of False Contours on a PDP Using a Pixel Based Motion Estimator Combined With an Efficient Coding Technique”, 2003 SID Int'l Symposium Digest of Technical Papers, Baltimore, MD May 20-22, 2003, vol. 34/2, May 20, 2003, pp. 780-783.
Search Report Dated May 5, 2006.
Borel Thierry
Doyen Didier
Entezari Michelle
Mehta Bhavesh
Navon Jeffrey M.
Shedd Robert D.
Thomson Licensing
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