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公开(公告)号：US07965936B2
公开(公告)日：2011-06-21
申请号：US12826868
申请日：2010-06-30
Applicant: Ramesh Raskar , Amit K. Agrawal
Inventor： Ramesh Raskar , Amit K. Agrawal
IPC: G03B13/00
CPC classification number: G02B27/0075
Abstract: A camera acquires a 4D light field of a scene. The camera includes a lens and sensor. A mask is arranged in a straight optical path between the lens and the sensor. The mask including an attenuation pattern to spatially modulate the 4D light field acquired of the scene by the sensor. The pattern has a low spatial frequency when the mask is arranged near the lens, and a high spatial frequency when the mask is arranged near the sensor.
Abstract translation: 相机获取场景的4D光场。 相机包括镜头和传感器。 掩模布置在透镜和传感器之间的直线光路中。 掩模包括用于空间调制由传感器获取的场景的4D光场的衰减图案。 当掩模布置在透镜附近时，图案具有低空间频率，当掩模布置在传感器附近时，该图案具有高的空间频率。
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42.发明授权Apparatus and method for illuminating a scene with multiplexed illumination for motion capture 失效用于利用用于运动捕获的多路照明照明场景的装置和方法公开(公告)号：US07957007B2
公开(公告)日：2011-06-07
申请号：US11435565
申请日：2006-05-17
Applicant: Ramesh Raskar , Paul H. Dietz
Inventor： Ramesh Raskar , Paul H. Dietz
CPC classification number: H04N5/222 , G01S17/023 , G01S17/74 , G01S17/875 , G01S17/89 , H04N5/2256 , H04N5/232
Abstract: A projector that illuminates a scene with multiplexed light patterns includes a passive physical mask, and a set of spatially dispersed optical emitters arranged behind the physical mask. The optical emitters are modulated to project a set of unique optical light patterns.
Abstract translation: 以复用光图案照亮场景的投影仪包括无源物理掩模和布置在物理掩模之后的一组空间分散的光发射器。 光发射器被调制以投射一组独特的光学光图案。
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43.发明授权公开(公告)号：US07580620B2
公开(公告)日：2009-08-25
申请号：US11429694
申请日：2006-05-08
Applicant: Ramesh Raskar , Jack Tumblin , Amit Agrawal
Inventor： Ramesh Raskar , Jack Tumblin , Amit Agrawal
CPC classification number: H04N5/23248 , H04N5/23258 , H04N5/2329 , H04N5/2353 , H04N5/238
Abstract: A method and system deblurs images acquired of a scene by a camera. A light field acquired of a scene is modulated temporally according to a sequence of ons and offs. An optimal coding pattern is selected. The modulated light field is integrated by a sensor of a camera during an exposure time to generate an encoded input image. The encoded input image is decoded according to a pseudo-inverse of a smearing matrix to produce a decoded output image having a reduced blur.
Abstract translation: 方法和系统通过照相机去除场景获取的图像。 场景获取的光场根据亮度和亮度的顺序进行时间调制。 选择最佳编码模式。 调制光场在曝光时间期间由相机的传感器集成以产生编码的输入图像。 编码的输入图像根据拖尾矩阵的伪逆解码，以产生具有减小的模糊的解码输出图像。
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公开(公告)号：US20070285422A1
公开(公告)日：2007-12-13
申请号：US11624016
申请日：2007-01-17
Applicant: Shree Nayar , Gurunandan Krishnan , Michael Grossberg , Ramesh Raskar
Inventor： Shree Nayar , Gurunandan Krishnan , Michael Grossberg , Ramesh Raskar
IPC: G06T15/50
CPC classification number: G06T15/50 , G06K9/4661
Abstract: A method and apparatus for determine an effect of direct and global illumination in a scene. A scene is illuminated with spatially varying illumination. A set of images is acquired of the scene, and a direct and global radiance in the set of images is determined.
Abstract translation: 一种用于确定场景中直接和全局照明效果的方法和装置。 一个场景用空间变化的照明照亮。 获取场景的一组图像，并且确定该组图像中的直接和全局辐射。
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45.发明申请公开(公告)号：US20070268481A1
公开(公告)日：2007-11-22
申请号：US11435581
申请日：2006-05-17
Applicant: Ramesh Raskar , Hideaki Nii , Yong Zhao , Paul H. Dietz , Erich Bruns
Inventor： Ramesh Raskar , Hideaki Nii , Yong Zhao , Paul H. Dietz , Erich Bruns
CPC classification number: G01N21/55 , G01J1/42 , G01N2021/557 , G06T7/73 , G06T2207/10016 , G06T2207/30204
Abstract: A system measures reflectance in a scene. A first optical sensor is configured to measure incident energy at a location in a scene. A second optical sensor is configured to measure reflected energy from the location in the scene. The incident energy and the reflected energy are analyzed to determine a photometric property at the location of the scene.
Abstract translation: 系统测量场景中的反射率。 第一光学传感器被配置成测量场景中的位置处的入射能量。 第二光学传感器被配置为测量来自场景中的位置的反射能量。 分析入射能量和反射能量以确定场景位置处的光度特性。
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Patent Agency Ranking
46.发明申请公开(公告)号：US20070258706A1
公开(公告)日：2007-11-08
申请号：US11429694
申请日：2006-05-08
Applicant: Ramesh Raskar , Jack Tumblin , Amit Agrawal
Inventor： Ramesh Raskar , Jack Tumblin , Amit Agrawal
IPC: G03B17/00
CPC classification number: H04N5/23248 , H04N5/23258 , H04N5/2329 , H04N5/2353 , H04N5/238
Abstract: A method and system deblurs images acquired of a scene by a camera. A light field acquired of a scene is modulated temporally according to a sequence of ons and offs. An optimal coding pattern is selected. The modulated light field is integrated by a sensor of a camera during an exposure time to generate an encoded input image. The encoded input image is decoded according to a pseudo-inverse of a smearing matrix to produce a decoded output image having a reduced blur.
Abstract translation: 方法和系统通过照相机去除场景获取的图像。 场景获取的光场根据亮度和亮度的顺序进行时间调制。 选择最佳编码模式。 调制光场在曝光时间期间由相机的传感器集成以产生编码的输入图像。 编码的输入图像根据拖尾矩阵的伪逆解码，以产生具有减小的模糊的解码输出图像。
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47.发明授权System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment 失效用于机械调节投影机姿态的系统和方法，具有六个自由度，用于图像对齐公开(公告)号：US07252387B2
公开(公告)日：2007-08-07
申请号：US11084876
申请日：2005-03-21
Applicant: Ramesh Raskar , Jeroen van Baar
Inventor： Ramesh Raskar , Jeroen van Baar
CPC classification number: H04N9/3194 , G03B21/142 , G03B21/147 , G03B37/04 , H04N5/74 , H04N9/3185
Abstract: A method adjusts a pose of a projector with respect to a display surface. A homography HD,P is determined between a display surface and a projector. The homography HD,P is decomposed into rotation and translation parameters expressing a pose MP of the projector. An ideal pose M0 of the projector corresponding to an ideal homography H0 is determined. A pose adjustment MA is determined according to MA=M0(MP)−1. The pose adjustment MA is decomposed into rotation and translation adjustment parameters. Then, the projector is adjusted mechanically to the ideal pose M0 according to the rotation and translation adjustment parameters.
Abstract translation: 一种方法调节投影仪相对于显示表面的姿态。 在显示表面和投影仪之间确定单应性H D D，P。。 单应H，D，P分解成表示投影仪姿势M P P的旋转和平移参数。 确定对应于理想单对应H 0 0的投影机的理想姿势M 0 0 。 姿势调整M A A根据M A = M 0（M P）来确定， 1 。 姿势调整M A A被分解为旋转和平移调整参数。 然后，根据旋转和平移调节参数，将投影机机械地调整到理想姿势M 0 0。
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公开(公告)号：US07154395B2
公开(公告)日：2006-12-26
申请号：US10883235
申请日：2004-07-01
Applicant: Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
Inventor： Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
IPC: G08B1/08
CPC classification number: G06K19/0728 , G01S5/16 , G06K7/10079 , G06K19/0723
Abstract: A wireless location and identification system includes a controller and a tag. The controller has a projector configured to generate a unique temporal sequence of light intensities for each pixel in an output image of the projector and a wireless transceiver configured to emit an output signal and receive an input signal. The tag includes a photo-sensor configured to sense the unique temporal sequence of light intensities of a particular pixel, a transducer configured to receive the output signal from the transceiver, and a means for modulating, according to the unique temporal sequence of light intensities, the input signal for the transceiver in response to receiving the output signal and sensing the unique temporal sequence of light intensities of the particular pixel to indicate a location of the tag to the controller.
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公开(公告)号：US20060001839A1
公开(公告)日：2006-01-05
申请号：US10883224
申请日：2004-07-01
Applicant: Paul Beardsley , Jeroen van Baar , Ramesh Raskar
Inventor： Paul Beardsley , Jeroen van Baar , Ramesh Raskar
IPC: G03B21/00
CPC classification number: H04N9/3185 , G03B17/54 , G03B21/26 , H04N5/74 , H04N9/3194
Abstract: A rigidly-coupled projector-camera system is augmented with laser pointers. The projector-camera system and lasers can be used to determine homography between the projector and a display surface, so that a projection of any desired geometry can be made on the display surface.
Abstract translation: 激光指针增强了刚性耦合的投影机相机系统。 可以使用投影仪相机系统和激光器来确定投影仪和显示表面之间的单应性，使得可以在显示表面上进行任何期望的几何形状的投影。
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公开(公告)号：US20050116813A1
公开(公告)日：2005-06-02
申请号：US11030607
申请日：2005-01-06
Applicant: Ramesh Raskar
Inventor： Ramesh Raskar
CPC classification number: G06K19/0728 , G06K7/0004 , G06K7/0008 , G06K7/10079 , G06K7/1097 , G06K19/0723 , G06K19/145
Abstract: An identification tag is formed with a single microcircuit. The microcircuit includes an optical transceiver, a radio transceiver, both connected to a memory storing an identification code. At least one of the transceivers operates in receive mode, and at least one of the transceivers operates in transmit mode. The identification code is transmitted by the transceiver operating in the transmit mode in response to receiving a predetermined signal by the transceiver operating in the receive mode.
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