Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities
    1.
    发明授权
    Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities 失效
    用于估计传感器暗电流漂移和传感器/照明非均匀性的方法和系统

    公开(公告)号:US06707557B2

    公开(公告)日:2004-03-16

    申请号:US09753431

    申请日:2001-01-02

    IPC分类号: G01N2186

    CPC分类号: H04N1/401 H04N2201/0408

    摘要: One aspect of the present invention is a system for estimating sensor and illumination non-uniformities. The system comprises a first light source, and a first sensor operable to capture light reflected from a first side of film illuminated by the light source while the film has a developer chemical applied thereto and processing circuitry coupled to the first sensor. The processing circuitry is operable to capture a first plurality of readings from the sensor responsive to light reflected from an unexposed region of film to determine a first set of non-uniformity data and adjust image data obtained from the film in response to the first set of non-uniformity data. In a further embodiment, the processing circuitry is further operable to dim the first light source for at least a portion of the time that the sensor is being used to sense the unexposed region of the film. The processing circuitry may also capture a second plurality of readings from the sensor while the first light source is dimmed to determine a second set of non-uniformity data and adjust image data obtained from the film in response to the second set of non-uniformity data.

    摘要翻译: 本发明的一个方面是用于估计传感器和照明不均匀性的系统。 该系统包括第一光源和第一传感器,第一传感器可操作以捕获由光源照射的膜的第一侧反射的光,同时膜具有施加于其上的显影剂化学品和耦合到第一传感器的处理电路。 所述处理电路可操作以响应于从未曝光区域反射的光来从所述传感器捕获第一多个读数,以确定第一组不均匀性数据,并响应于所述第一组的第一组调整从所述胶片获得的图像数据 不均匀数据。 在另一个实施例中,处理电路还可操作以在传感器被用于感测胶片的未曝光区域的至少一部分时间内调暗第一光源。 当第一光源被调暗以确定第二组不均匀性数据并且响应于第二组非均匀性数据调整从胶片获得的图像数据时,处理电路还可以从传感器捕获第二多个读数 。

    Pulsed illumination signal modulation control & adjustment method and system
    2.
    发明授权
    Pulsed illumination signal modulation control & adjustment method and system 失效
    脉冲照明信号调制控制及调整方法及系统

    公开(公告)号:US06788335B2

    公开(公告)日:2004-09-07

    申请号:US09746859

    申请日:2000-12-21

    IPC分类号: H04N718

    摘要: One aspect of the invention is a method for signal modulation adjustment. The method comprises illuminating a reference target and a region of film with a first light source for a first time interval. The method further comprises capturing image data from the film in response to a first amount of light reflected from the film with a first sensor for a first integration time. The method also comprises approximately simultaneously producing a first reference output in response to a first amount of light reflected from the reference target in a field of view of a reference sensor. More particularly, the method further comprises adjusting the data in response to the reference output. In a further embodiment, the method comprises adjusting an output illumination level of the first light source in response to the first reference output before a next time interval.

    摘要翻译: 本发明的一个方面是用于信号调制调整的方法。 该方法包括用第一时间间隔用第一光源照射参考目标和胶片区域。 该方法还包括响应于从第一传感器第一积分时间从胶片反射的第一光量来从胶片中拍摄图像数据。 该方法还包括响应于在参考传感器的视场中从参考目标反射的第一光量大致同时产生第一参考输出。 更具体地,该方法还包括响应于参考输出来调整数据。 在另一个实施例中,该方法包括在下一个时间间隔之前响应于第一参考输出来调节第一光源的输出照明水平。

    Digital film processing feature location method and system
    3.
    发明授权
    Digital film processing feature location method and system 失效
    数字电影处理功能定位方法和系统

    公开(公告)号:US06816604B2

    公开(公告)日:2004-11-09

    申请号:US09751471

    申请日:2000-12-29

    IPC分类号: G06K900

    摘要: One aspect of the invention is a method for locating an unexposed region of film. The method includes the step of illuminating film with a light source while the film has developing chemical applied thereto, the film comprising at least two edges along an x direction perpendicular to a y direction parallel to a surface of the film. The method also includes the step of identifying an unexposed region of the film as a region containing ones of a first plurality of columns of the film, the columns disposed generally in the y direction and captured using at least one sensor operable to capture light reflected from the film, and wherein a representative value for each of the ones of first plurality of columns exceeds a threshold.

    摘要翻译: 本发明的一个方面是一种用于定位未曝光的膜的区域的方法。 该方法包括在薄膜具有显影化学品的情况下用光源照射薄膜的步骤,该薄膜包括沿垂直于平行于薄膜表面的y方向的x方向的至少两个边缘。 该方法还包括以下步骤:将膜的未曝光区域识别为包含膜的第一多个列中的一个的区域,所述区域大致沿y方向排列,并且使用至少一个传感器进行捕获,该传感器可操作以捕获从 并且其中,所述第一列中的每一列的代表值超过阈值。