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    • 21. 发明授权
    • Image processing system, projector, information storage medium, and image processing method
    • 图像处理系统,投影机,信息存储介质和图像处理方法
    • US07167645B2
    • 2007-01-23
    • US10944139
    • 2004-09-20
    • Hideki MatsudaKunio Yoneno
    • Hideki MatsudaKunio Yoneno
    • G03B71/00G03B21/14H04N7/18H04N5/235
    • H04N9/3185G09G2320/0693H04N5/74H04N9/3194
    • A projector includes an image projection section which projects a white image and a black image, a sensor which has an exposure adjustment function, generates first sensing information by sensing the white image, and generates second sensing information by sensing the black image, a sensing condition setting section which controls exposure of the sensor so that the sensor senses the white image at an automatic exposure setting and senses the black image at the exposure setting determined when sensing the white image, a difference information generation section which generates difference information based on the first sensing information and the second sensing information, and an endpoint detection section which detects an endpoint of a projection region in a sensing region based on the difference information.
    • 投影仪包括投影白色图像和黑色图像的图像投影部分,具有曝光调整功能的传感器,通过感测白色图像来生成第一感测信息,并且通过感测黑色图像产生第二感测信息,感测条件 设置部分,其控制传感器的曝光,使得传感器以自动曝光设置感测白色图像,并在感测白色图像时确定的曝光设置下感测黑色图像;差分信息生成部,其基于第一 感测信息和第二感测信息,以及端点检测部分,其基于差异信息来检测感测区域中的投影区域的端点。