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    • 51. 发明授权
    • Film image reading system and image processing method dot sequentially
adjusting image parameters
    • 电影图像读取系统和图像处理方法顺序调整图像参数
    • US5790707A
    • 1998-08-04
    • US715818
    • 1996-09-19
    • Hiroshi TanakaAtsuhiko IshiharaManabu HyodoMakoto Nakazawa
    • Hiroshi TanakaAtsuhiko IshiharaManabu HyodoMakoto Nakazawa
    • G06T1/00H04N1/60H04N3/38H04N5/253H04N9/11
    • H04N3/38H04N1/6027H04N5/253H04N9/11
    • The present invention achieves an exposure control for getting an image with the best SN without a mechanical iris and an image processing which is good at the color-reappearance and the gradation property with a simple digital processing circuit. When the film image is read by the line sensor 14 which has an electric shutter function, the electric shutter, the film feeding speed and the analog amplifier 16 are controlled totally so as to obtain images with the best SN from high to low transmittance negatives. And, when the dot sequential R, G, B digital signals are processed digitally, the offset values and the gain volumes of the respective R, G, B are calculated based on the maximum value and the minimum value which are detected by the respective R, G, B digital signals, the calculated offset values of the respective R, G, B are added to the dot sequential R, G, B digital signals which are obtained during the re-scanning, and the calculated gain volumes of the respective R, G, B are multiplied by the offset dot-sequential R, G, B digital signals so as to adjust the white balance and the black balance.
    • 本发明通过简单的数字处理电路实现了获得具有最佳SN的图像的曝光控制,而没有机械光圈和具有良好的色彩再现性和灰度特性的图像处理。 当通过具有电动快门功能的线传感器14读取胶片图像时,完全控制电动快门,胶片馈送速度和模拟放大器16,以便获得具有从高到低透射率底片的最佳SN的图像。 并且,当点数R,G,B数字信号被数字地处理时,相应的R,G,B的偏移值和增益容积根据由相应R检测的最大值和最小值计算 ,G,B数字信号,将相应的R,G,B的计算的偏移值加到在重新扫描期间获得的点连续的R,G,B数字信号中,并且计算出的相应R的增益量 ,G,B乘以偏移点顺序R,G,B数字信号,以调整白平衡和黑平衡。
    • 60. 发明授权
    • Film image input system having improved focusing and reduced size
    • 胶片图像输入系统具有改进的聚焦和减小的尺寸
    • US5737099A
    • 1998-04-07
    • US788203
    • 1997-01-24
    • Makoto NakazawaMasaaki Orimoto
    • Makoto NakazawaMasaaki Orimoto
    • G02B27/02H04N1/00H04N1/04H04N1/12H04N1/193H04N5/253
    • H04N1/00249H04N1/00267H04N1/0027H04N1/12H04N1/193H04N2201/0077H04N2201/0408
    • When illuminating light from a fluorescent light is illuminated toward photo film being conveyed, the transmitted image light of the illuminated photo film is reflected by a mirror and focused on a CCD line sensor through a taking lens. Then, the electric signals converted by photoelectric conversion elements of the CCD line sensor are image-processed by an image processing system, and then outputted to a TV monitor as image signals. The fluorescent light is arranged on the side of the base surface of the film such that the illuminating light illuminates the base surface of the film first and then passes through the emulsion surface of the film so that this image light is focused on the CCD line sensor, so that the film image can be reproduced clearly. The taking lens and the CCD line sensor are arranged in a space between the film cartridge and the film winding room in such a manner that the taking optical axis becomes parallel to the photo film conveying direction so as to use the space effectively, so that the system can be made compact.
    • 当将来自荧光灯的光照射到被传送的照相胶片时,照射的照相胶片的透射图像光被反射镜反射并通过拍摄镜头聚焦在CCD线传感器上。 然后,由CCD线传感器的光电转换元件转换的电信号由图像处理系统进行图像处理,然后作为图像信号输出到TV监视器。 荧光灯配置在薄膜的基面的一侧,使得照明光首先照射胶片的基面,然后通过胶片的乳剂表面,使得该图像光聚焦在CCD线传感器 ,使得电影图像可以被清晰地再现。 拍摄镜头和CCD线传感器被布置在暗盒和胶片卷绕室之间的空间中,使得拍摄光轴变得平行于照相胶片传送方向,以便有效地使用该空间,使得 系统可以做到紧凑。