Invention Grant
- Patent Title: Computer-readable record medium in which a telop character extraction program is recorded, telop character extraction method and telop character extraction apparatus
- Patent Title (中): 记录字幕提取程序的计算机可读记录介质,字幕提取方法和字幕提取装置
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Application No.: US12021611Application Date: 2008-01-29
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Publication No.: US07961948B2Publication Date: 2011-06-14
- Inventor: Yutaka Katsuyama
- Applicant: Yutaka Katsuyama
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Greer, Burns & Crain, Ltd.
- Priority: JP2007-025259 20070205
- Main IPC: G06K9/18
- IPC: G06K9/18

Abstract:
A telop character extraction apparatus generates a gray-scale image from a telop region image, and generates an edge region image where an edge is extracted from within the gray-scale image. The apparatus uses the edge region image as a mask image, and creates a luminance histogram of pixels of the gray-scale image. The apparatus divides a luminance of the luminance histogram into luminance classes. The apparatus generates binary images where pixels of luminances belonging to the individual classes are collected for the respective luminance classes, and selects the binary image of the class of maximum area, as a telop character candidate image. The apparatus decides on a character color used in the telop region image, in correspondence with the telop character candidate image, and extracts character pixels corresponding to the character color, from within the telop character candidate image, thereby to eliminate noise pixels and to generate telop character image.
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