公开(公告)号：US20060077355A1

公开(公告)日：2006-04-13

申请号：US11273840

申请日：2005-11-15

Applicant: Knut Krogstad ,  Johan Litleskare

Inventor： Knut Krogstad ,  Johan Litleskare

IPC: G03B21/14 ,  H04N3/26

CPC classification number: H04N9/3147 ,  H04N5/74 ,  H04N9/12 ,  H04N9/31 ,  H04N9/3185 ,  H04N2005/745 ,  H04N2005/7466

Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.

Abstract translation: 提供了一种用于将图像投影到投影表面上的固定像素光栅投影仪的几何校正模块。 几何校正模块包括接收器和几何校正器。 接收器收集表示输入图像的输入像素网格。 几何校正器生成表示通过重新定位从至少两个输入像素内插的图像数据来补偿投影表面的几何的输出图像的输出像素网格。 输出图像表示改变的输入图像，当投影到投影面上时将显示正确比例的输入图像。 还提供了在投影图像时校正几何失真的方法。

公开(公告)号：US07855753B2

公开(公告)日：2010-12-21

申请号：US12702094

申请日：2010-02-08

Applicant: Knut Krogstad ,  Johan Henrik Litleskare ,  Randi Litleskare, legal representative

Inventor： Knut Krogstad ,  Johan Henrik Litleskare

IPC: H04N3/223

CPC classification number: H04N9/3147 ,  H04N5/74 ,  H04N9/12 ,  H04N9/31 ,  H04N9/3185 ,  H04N2005/745 ,  H04N2005/7466

Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.

Abstract translation: 提供了一种用于将图像投影到投影表面上的固定像素光栅投影仪的几何校正模块。 几何校正模块包括接收器和几何校正器。 接收器收集表示输入图像的输入像素网格。 几何校正器生成表示通过重新定位从至少两个输入像素内插的图像数据来补偿投影表面的几何的输出图像的输出像素网格。 输出图像表示改变的输入图像，当投影到投影面上时将显示正确比例的输入图像。 还提供了在投影图像时校正几何失真的方法。

公开(公告)号：US07679690B2

公开(公告)日：2010-03-16

申请号：US11273840

申请日：2005-11-15

Applicant: Knut Krogstad ,  Johan Henrik Litleskare

Inventor： Knut Krogstad ,  Johan Henrik Litleskare

IPC: H04N3/223

CPC classification number: H04N9/3147 ,  H04N5/74 ,  H04N9/12 ,  H04N9/31 ,  H04N9/3185 ,  H04N2005/745 ,  H04N2005/7466

Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.

公开(公告)号：US06999133B2

公开(公告)日：2006-02-14

申请号：US10203006

申请日：2001-01-25

Applicant: Knut Krogstad ,  Johan Henrik Litleskare

Inventor： Knut Krogstad ,  Johan Henrik Litleskare

IPC: H04N3/23

CPC classification number: H04N9/3147 ,  H04N5/74 ,  H04N9/12 ,  H04N9/31 ,  H04N9/3185 ,  H04N2005/745 ,  H04N2005/7466

Abstract: Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen) where a correction module is provided in each of a plurality of video projectors after a common image source in order to create a large, of several composite sub image, projected image of said image source. The correction module comprises a sequencer (1), a pixel write control (2), a parameter storage (7), a read address generator (13), a coefficient generator (5), a scaling generator (6), an adder (8), a pixel storage (3), a vertical mixer (9), a horizontal mixer (10) and a look up function means (12) for correction of differences in the border area of the image of the respective projectors such as geometry correction, soft transition tuning, vignette correction and gamma correction.

Abstract translation: 用于视频投影仪的数字校正模块，其中提供校正模块以给出图像的非线性重新成像，使得其在非理想屏幕（弯曲屏幕）上被正确显示，其中校正模块设置在 多个视频投影机经过一个共同的图像源，以创建一个大的，多个复合子图像，所述图像源的投影图像。 校正模块包括定序器（1），像素写入控制（2），参数存储器（7），读取地址生成器（13），系数生成器（5），缩放生成器（6） 8），像素存储器（3），垂直混合器（9），水平混合器（10）和查找功能装置（12），用于校正各个投影仪的图像的边界区域的差异，例如几何 校正，软转换调谐，晕影校正和伽马校正。

公开(公告)号：US08610778B2

公开(公告)日：2013-12-17

申请号：US12280828

申请日：2007-02-28

Applicant: Knut Krogstad

Inventor： Knut Krogstad

IPC: H04N17/00

CPC classification number: H04N5/74 ,  G03B21/53 ,  G03B21/56 ,  H04N9/3182 ,  H04N9/3185

Abstract: A method and a device for use in calibrating a projector image display towards a display screen, wherein the display screen is equipped with a plurality of discrete light detection points on or in the front surface of the screen, or located immediately below the front surface, wherein each light detection point or groups thereof are associated with a light detector, wherein at least one image is projected towards the display screen, and wherein it is determined which image pixel or pixels of the projected image hit the respective detection point on the screen, and/or wherein brightness and/or colours in the projected image are correlated by comparing measurements at the detection points and relevant projector parameters are adjusted correspondingly.

Abstract translation: 一种用于将投影仪图像显示校准到显示屏幕的方法和装置，其中所述显示屏幕在所述屏幕的前表面上或表面上配置有多个离散的光检测点，或者位于所述前表面正下方， 其中每个光检测点或其组与光检测器相关联，其中至少一个图像被投影到显示屏幕，并且其中确定投影图像的哪个图像像素或像素击中屏幕上的相应检测点， 和/或其中投影图像中的亮度和/或颜色通过比较检测点处的测量值相关并且相应地调整相关的投影仪参数。

公开(公告)号：US20120038922A1

公开(公告)日：2012-02-16

申请号：US13202314

申请日：2010-02-18

Applicant: Knut Krogstad

Inventor： Knut Krogstad

IPC: G01J3/46 ,  G01J1/42

CPC classification number: H04N9/3194 ,  G01J3/505 ,  G01J3/506 ,  G01J3/524 ,  G01J2001/4242 ,  G03B21/13 ,  G03B37/04 ,  G09G3/001 ,  G09G2320/0242 ,  G09G2320/0626 ,  G09G2320/0693 ,  H04N9/3147 ,  H04N9/3182 ,  H04N17/045

Abstract: It relates to a method for measuring at least one of light intensity and colour in at least one modulated image, the method comprising the steps of: a) detecting a modulation pattern of the modulated image(s); and b) synchronizing a measurement of the intensity and/or colour with the detected modulation pattern. It also relates to a corresponding device.

Abstract translation: 本发明涉及一种用于测量至少一个调制图像中的光强度和颜色中的至少一个的方法，该方法包括以下步骤：a）检测调制图像的调制图案; 以及b）将所述强度和/或颜色的测量与所检测的调制图案同步。 它还涉及相应的装置。

公开(公告)号：US20090091623A1

公开(公告)日：2009-04-09

申请号：US12280828

申请日：2007-02-28

Applicant: Knut Krogstad

Inventor： Knut Krogstad

IPC: H04N17/00 ,  H04N3/26

CPC classification number: H04N5/74 ,  G03B21/53 ,  G03B21/56 ,  H04N9/3182 ,  H04N9/3185

Abstract: A method and a device for use in calibrating a projector image display towards a display screen, wherein the display screen is equipped with a plurality of discrete light detection points on or in the front surface of the screen, or located immediately below the front surface, wherein each light detection point or groups thereof are associated with a light detector, wherein at least one image is projected towards the display screen, and wherein it is determined which image pixel or pixels of the projected image hit the respective detection point on the screen, and/or wherein brightness and/or colours in the projected image are correlated by comparing measurements at the detection points and relevant projector parameters are adjusted correspondingly.

Abstract translation: 一种用于将投影仪图像显示校准到显示屏幕的方法和装置，其中所述显示屏幕在所述屏幕的前表面上或表面上配置有多个离散的光检测点，或者位于所述前表面正下方， 其中每个光检测点或其组与光检测器相关联，其中至少一个图像被投影到显示屏幕，并且其中确定投影图像的哪个图像像素或像素击中屏幕上的相应检测点， 和/或其中投影图像中的亮度和/或颜色通过比较检测点处的测量值相关并且相应地调整相关的投影仪参数。