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    • 1. 发明公开
    • Electronic image scanner with colour matrix image enhancement
    • 具有彩色矩阵图像增强的电子图像扫描仪
    • EP0185487A3
    • 1987-06-24
    • EP85308785
    • 1985-12-03
    • POLAROID CORPORATION
    • Alston, Lawrence E.
    • H04N01/46
    • H04N1/482H04N1/60
    • In an image sensing and processing apparatus for a coloured image, light from a photoresponsive means is sequentially filtered (14) before reaching photoresponsive means to establish in the electrical output signal red, green, blue, yellow, cyan and magenta colour components. Signal processing means (38-46) provide an enhanced red colour component as a function of the red and cyan colour components of the electrical output signal. Similarly an enhanced green colour component is obtained as a function of the green and magenta colour components of the electrical output signal, and an enhanced blue colour component as a function of the blue and yellow components of the electrical output signal. Preferably, each complementary colour is obtained and stored immediately before the primary colour with which it is to be combined, so that only one of the complementary colours is stored at a time. Preferably, the complementary colour image-representing signals are obtained at a lower resolution than the primary colour signals, thereby reducing memory requirements still further.
    • 2. 发明公开
    • Method and apparatus for encoding and decoding video signals for their recording/playback with an improved chrominance characteristic
    • 用于编码和用于与Farbartcharakteristik的记录/再现的视频信号的解码方法和设备。
    • EP0239860A2
    • 1987-10-07
    • EP87103840.2
    • 1987-03-17
    • POLAROID CORPORATION
    • Alston, Lawrence E.
    • H04N9/86
    • H04N9/86H04N9/7973
    • An apparatus and method are provided for encoding and decoding video signals on a conventional magnetic recording medium in a manner whereby the decoded video signal includes an improved chrominance character­istic. The improved chrominance characteristic is provided by encoding the conventional luminance and chrominance information signals on a first track of the information recording medium for the odd alternate fields and a modified luminance information signal and a select separate color component signal on a second track of the information recording medium. The signal recorded on the first track of the recording medium may be decoded in a conventional manner to provide video signals of limited chrominance video bandwidth or, alternatively, both tracks of the recording medium may be decoded in the manner of this invention to provide an improved chrominance characteristic video signal.
    • 以这样的方式,由此解码视频信号包括在改进的色度特性本发明提供一种装置和方法,用于编码和解码视频信号的常规磁记录介质上。 改进的色度特性由用于奇数备用字段中的信息记录介质和一个修改后的亮度信息信号和一第二轨道的信息记录上的选择单独的彩色分量信号中的第一磁道上编码的常规的亮度和色度信息信号提供 中等。 记录在记录介质的第一磁迹上的信号可以以常规的方式进行解码,以提供有限的色度视频带宽的视频信号,或者可选地,在记录介质的两个轨道可以在本发明中,以提供改善的方式被解码 色度特性的视频信号。
    • 4. 发明公开
    • Imaging camera and method
    • 相机和图像形成方法。
    • EP0220859A2
    • 1987-05-06
    • EP86307764.0
    • 1986-10-08
    • POLAROID CORPORATION
    • Alston, Lawrence E.Plummer, William T.Levinstone, Donald S.
    • H04N5/335
    • H04N5/2354H04N5/35581H04N5/3722
    • An electronic imaging camera is provided with a substantially expanded dyanmic exposure range by implementing two succeeding exposure intervals under conditions where the exposure defining parameters are substantially different and thereafter selectively choosing between the electronic information signals sensed during the two succeeding exposure intervals to provide an output signal from which a visible image of the subject may be reconstructed thereafter.
      The camera comprises an image sensing array (14) comprising a predetermined number of discrete image sensing areas all of which are responsible to incident illumination from a subject to provide an electronic information signal corresponding to the intensity of the illumination incident thereto; an image storing array (16) for storing the electronic information signal; and control means. The control means controls first and second, different, select sets of exposure defining parameters to implement first and second exposure intervals during which the image sensing array (14) is exposed to incident illumination, and transfers the electronic information signal derived during each exposure interval from the image sensing array (14) to the storing array (16). Means (28,30,36) selectively combines the electronic information signal derived during the first and second exposure intervals to provide an output electronic information signal comprising a first selected component of the electronic information signal derived during the first exposure interval and second selected component of the electronic information signal derived during the second exposure from which a visible image of the subject may be constructed.
    • 5. 发明公开
    • Electronic image scanner with colour matrix image enhancement
    • Elektronischer Bildabtaster mitFarbmatrixbildverstärkung。
    • EP0185487A2
    • 1986-06-25
    • EP85308785.6
    • 1985-12-03
    • POLAROID CORPORATION
    • Alston, Lawrence E.
    • H04N1/46
    • H04N1/482H04N1/60
    • In an image sensing and processing apparatus for a coloured image, light from a photoresponsive means is sequentially filtered (14) before reaching photoresponsive means to establish in the electrical output signal red, green, blue, yellow, cyan and magenta colour components. Signal processing means (38-46) provide an enhanced red colour component as a function of the red and cyan colour components of the electrical output signal. Similarly an enhanced green colour component is obtained as a function of the green and magenta colour components of the electrical output signal, and an enhanced blue colour component as a function of the blue and yellow components of the electrical output signal. Preferably, each complementary colour is obtained and stored immediately before the primary colour with which it is to be combined, so that only one of the complementary colours is stored at a time. Preferably, the complementary colour image-representing signals are obtained at a lower resolution than the primary colour signals, thereby reducing memory requirements still further.
    • 在用于彩色图像的图像感测和处理装置中,来自光响应装置的光在到达光响应装置之前被顺序滤波(14),以在电输出信号红,绿,蓝,黄,青和品红色分量中建立。 信号处理装置(38-46)提供作为电输出信号的红色和青色分量的函数的增强红色分量。 类似地,获得作为电输出信号的绿色和品红色分量的函数的增强的绿色分量,以及作为电输出信号的蓝色和黄色分量的函数的增强的蓝色分量。 优选地,每个互补色彩被立即获得并存储在与其组合的原色之前,使得一次只存储一种互补色。 优选地,以比原色信号更低的分辨率获得补色图像表示信号,从而进一步减少存储器需求。