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    LUMINANCE UNIFORMITY IN A PROJECTION DISPLAY SYSTEM
    1.
    发明公开
    LUMINANCE UNIFORMITY IN A PROJECTION DISPLAY SYSTEM 审中-公开

    公开(公告)号：EP4429233A1

    公开(公告)日：2024-09-11

    申请号：EP23217591.9

    申请日：2023-12-18

    申请人： The Boeing Company

    发明人： BEETZ, Steven Thomas ,  ROHR, Michael Vincent ,  STREID, Harold R.

    IPC分类号： H04N9/31 ,  G09B9/32 ,  G02B27/09

    CPC分类号： H04N9/3147 ,  H04N9/3182 ,  H04N9/3194 ,  G02B27/0988

    摘要： Generating luminance uniformity in a rear projection display system is provided. The method comprises calculating luminance generated by a projector (402) on a rear projection screen (400) relative to a design eye position (416) in front of the screen (400). A baseline luminance is determined for each primary color according to the luminance. Luminance of all locations on the screen is corrected toward the baseline. Correction is allocated between an optical filter (404) and electronic correction. Luminance is measured at calibration points on the screen. The electronic correction for a color image is adjusted according to the allocation and the luminance at the calibration points to produce a corrected color image for projection from the projector. The corrected color image is projected from the projector (402) and through the optical filter (404). The optical filter (404) is configured to dim specified areas within the corrected color image according to the allocation.

    COMMUNICATION STAGE AND INTEGRATED SYSTEMS
    3.
    发明公开
    COMMUNICATION STAGE AND INTEGRATED SYSTEMS 审中-实审

    公开(公告)号：EP4354269A2

    公开(公告)日：2024-04-17

    申请号：EP24153103.7

    申请日：2015-09-25

    申请人： Mcnelley, Steve H. ,  Machtig, Jeffrey

    发明人： Mcnelley, Steve H. ,  Machtig, Jeffrey

    IPC分类号： G06F3/0481

    CPC分类号： H04N7/144 ,  H04N5/222 ,  H04N9/3147 ,  H04N7/15

    摘要： Enterprise communication display systems enable life-like images for videoconferencing and entertainment productions. Life-like images appear in a 3D environment where imaged people are visible through the use of specially configured see-through displays. Imaged people can also be viewed amongst a reflected foreground. A dual mode large high-resolution display is inventively configured for watching and working. Methods for enterprise wide deployments for corporate, healthcare, education, and government communications, including hotel properties and a property management system are shown. The invention further discloses an online production system for large events. A remote production staff collaborates and controls a presentation with large scale audio/visual equipment.

    PROJECTION SYSTEM, IMAGE PROCESSING DEVICE, PROJECTION METHOD, AND PROGRAM
    4.
    发明公开
    PROJECTION SYSTEM, IMAGE PROCESSING DEVICE, PROJECTION METHOD, AND PROGRAM 审中-公开

    公开(公告)号：EP3404648A1

    公开(公告)日：2018-11-21

    申请号：EP16885102.0

    申请日：2016-12-19

    申请人： Ricoh Company, Ltd.

    发明人： ISHIKAWA, Masaaki ,  UCHIYAMA, Yukinaka

    IPC分类号： G09G5/00 ,  G03B21/00 ,  H04N5/74

    CPC分类号： H04N9/3147 ,  G03B21/00 ,  G03B21/14 ,  G03B21/60 ,  G09G5/00 ,  H04N5/74 ,  H04N9/3185 ,  H04N9/3188 ,  H04N9/3194

    摘要： A projection system (100) for projecting an image onto a projection body having a curve in one direction by projection units (150) includes a grid point extraction unit (132) to extract a set of grid points indicating distortion of a projected image from captured calibration images; a grid point converting unit (134) to convert each set of grid points of a target projection unit (150) commonly extracted from captured calibration images having a calibration pattern projected on the projection body in different imaging ranges in association with the one direction onto a common coordinate system; a grid point combining unit (136) to combine the converted sets of grid points on the common coordinate system in accordance with position; and a correction coefficient calculating unit (140) to calculate a correction coefficient based on the combined sets of grid points.