公开(公告)号：US20040119005A1

公开(公告)日：2004-06-24

申请号：US10321608

申请日：2002-12-18

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Robert M. Krohn ,  James S. Howard ,  Glenn L. Kehley ,  Steven J. Pratt

IPC: H01J005/02

CPC classification number: H04N1/00013 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00058 ,  H04N1/00087 ,  H04N1/193 ,  H04N17/002

Abstract: A new and improved line scan camera achieves the proper framing of the image field of view by using a first test card to calibrate the true bottom and leading edge portions of the test card which simulate the true bottom and leading portions of an article being scanned or photographed. Still further, the architecture of the electronic chip incorporated within the charge coupled device (CCD) of the camera effectively divides the linear array of pixels into a plurality of channels, and amplifier gain and black offset adjustments are made with respect to exposure levels, characteristic of the pixels disposed at the channel boundaries, under different degrees of input whiteness signals applied to a test card of a predetermined color shade, so as to achieve channel-to-channel seam matching. Subsequently, correction factors are effectively superimposed upon substantially all of the exposure levels characteristic of substantially all of the pixels comprising the line scan of the line scan camera such that true uniform exposure levels are in fact achieved.

Abstract translation: 新的和改进的线扫描相机通过使用第一测试卡来校准测试卡的真实底部和前缘部分来模拟正在扫描的物品的真实底部和前导部分，从而实现图像视场的适当构图， 拍照 另外，结合在照相机的电荷耦合器件（CCD）中的电子芯片的结构有效地将线性阵列阵列划分成多个通道，并且相对于曝光水平进行放大器增益和黑色偏移调整 在施加到预定色调的测试卡的不同程度的输入白度信号下，设置在通道边界处的像素，以实现通道到通道缝合匹配。 随后，校正因子有效地叠加在基本上所有的包括行扫描照相机的行扫描的像素的所有像素的曝光水平之上，实际上实现了真正的均匀曝光水平。

公开(公告)号：US20040135907A1

公开(公告)日：2004-07-15

申请号：US10339283

申请日：2003-01-09

Applicant: Lockheed Martin Corporation

Inventor： Robert M. Krohn ,  Steven J. Pratt

IPC: H04N005/202

CPC classification number: G06K9/60

Abstract: An apparatus processes a video image. The apparatus includes an imaging device, a frame grabber device, and a host computer. The imaging device (20) produces a gray level image representing the video image. The frame grabber device conducts preprocessing functions on the gray level image and produces a plurality of image types from the gray level image. The host computer has a memory for storing the plurality of image types. The plurality of image types are transferred directly from the frame grabber device to the memory of the host computer.

Abstract translation: 设备处理视频图像。 该装置包括成像装置，帧抓取装置和主计算机。 成像装置（20）产生表示视频图像的灰度级图像。 帧抓取装置在灰度图像上进行预处理功能，并从灰度图像生成多个图像类型。 主计算机具有用于存储多个图像类型的存储器。 多个图像类型从帧抓取装置直接传送到主计算机的存储器。

公开(公告)号：US20040108982A1

公开(公告)日：2004-06-10

申请号：US10314225

申请日：2002-12-09

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Robert M. Krohn

IPC: G09G003/32

CPC classification number: H05B33/0893 ,  H05B37/03

Abstract: A method or technique of operating the LED illumination system within a line scan camera comprises the operation of the LED illumination sources at a relatively high gain control level, less than the one hundred percent maximum or acceptable gain level, and a correspondingly reduced duty cycle level, which is less than one hundred percent (100%), so as to effectively reduce the aging of the LEDs and thereby achieve extended service lives for the LEDs. As the LEDs age with usage, whereby their luminosity levels degrade, the duty cycle percentage level is progressively increased until a maximum output or one hundred percent duty cycle percentage level is reached at which time the gain control percentage is progressively increased up until the maximum acceptable gain percentage level. An end-of-life prediction technique or routine is also capable of being derived from the progressively increased gain control percentages so as to enable the replacement of the LED illumination sources at appropriate times.

Abstract translation: 在线扫描照相机内操作LED照明系统的方法或技术包括以相对较高的增益控制水平操作LED照明源，小于百分之百最大或可接受的增益水平，以及相应减小的占空比水平 ，小于百分之百（100％），以便有效地降低LED的老化，从而实现LED的延长的使用寿命。 随着LED使用年龄的增长，其亮度水平降低，占空比百分比逐渐增加，直到达到最大输出或百分之百的占空比百分比水平，此时增益控制百分比逐渐增加直到最大可接受 获得百分比水平。 生命周期预测技术或程序也能够从逐渐增加的增益控制百分比导出，以便在适当的时间使LED照明源的替换。

公开(公告)号：US20020130257A1

公开(公告)日：2002-09-19

申请号：US09810397

申请日：2001-03-19

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Robert M. Krohn ,  Glenn L. Kehley

IPC: H01J005/02

CPC classification number: H04N1/00909 ,  H04N1/00989 ,  H04N1/02409 ,  H04N1/03 ,  H04N2201/02456 ,  H04N2201/02458 ,  H04N2201/02468 ,  H04N2201/02485

Abstract: A line scan camera comprises a printed circuit board upon which a charge-coupled device (CCD) is mounted. A lens component is fixed within a lens mount, and the base of the lens mount is adjustably mounted upon an optical bench. Calibration devices adjustably interconnect the lens mount to the printed circuit board and to the optical bench so as to calibrate the positional location of the lens component relative to the charge-coupled device (CCD) and to an object plane past which objects to be scanned and photographed are conveyed. In this manner, the focus distance defined between the lens component and the charge-coupled device (CCD) as well as the focal distance defined between the lens component and the object plane are fixed and do not need any further calibration. The object plane is defined upon the front surface of a sealed housing enclosure and all of the components are disposed within the housing enclosure so as to prevent dust and contaminants from collecting upon the optical components. LED arrays are disposed within the front of the housing so as to illuminate and properly expose the objects conveyed past the object plane. A positive pressure differential is also created within the sealed housing enclosure so as to prevent the ingress of dust and contaminants into the housing enclosure.

Abstract translation: 行扫描照相机包括印刷电路板，其上安装有电荷耦合器件（CCD）。 透镜组件固定在透镜座内，透镜座的基座可调节地安装在光学台上。 校准装置可调节地将透镜安装件连接到印刷电路板和光学台，以便校准透镜部件相对于电荷耦合器件（CCD）的位置以及通过哪个被扫描对象的物体平面 被拍摄的被传送。 以这种方式，透镜部件和电荷耦合器件（CCD）之间定义的焦距以及透镜部件和物平面之间限定的焦距是固定的，并且不需要任何进一步的校准。 物体平面被限定在密封的壳体外壳的前表面上，并且所有部件都设置在壳体外壳内，以防止灰尘和污染物收集在光学部件上。 LED阵列设置在壳体的前部，以便照亮并适当地暴露通过物平面传送的物体。 在密封的壳体外壳内也产生正压差，以防止灰尘和污染物进入壳体外壳。

公开(公告)号：US20030034447A1

公开(公告)日：2003-02-20

申请号：US10259719

申请日：2002-09-30

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Robert M. Krohn ,  Glenn L. Kehley

IPC: H01J005/02 ,  H01J040/14

CPC classification number: H04N1/00909 ,  H04N1/00989 ,  H04N1/02409 ,  H04N1/03 ,  H04N2201/02456 ,  H04N2201/02458 ,  H04N2201/02468 ,  H04N2201/02485

Abstract: A line scan camera comprises a printed circuit board upon which a charge-coupled device (CCD) is mounted. A lens component is fixed within a lens mount, and the base of the lens mount is adjustably mounted upon an optical bench. Calibration devices adjustably interconnect the lens mount to the printed circuit board and to the optical bench so as to calibrate the positional location of the lens component relative to the charge-coupled device (CCD) and to an object plane past which objects to be scanned and photographed are conveyed. In this manner, the focus distance defined between the lens component and the charge-coupled device (CCD) as well as the focal distance defined between the lens component and the object plane are fixed and do not need any further calibration. The object plane is defined upon the front surface of a sealed housing enclosure and all of the components are disposed within the housing enclosure so as to prevent dust and contaminants from collecting upon the optical components. LED arrays are disposed within the front of the housing so as to illuminate and properly expose the objects conveyed past the object plane. A positive pressure differential is also created within the sealed housing enclosure so as to prevent the ingress of dust and contaminants into the housing enclosure.