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公开(公告)号：US11792374B1
公开(公告)日：2023-10-17
申请号：US17986915
申请日：2022-11-15
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Nai-Ting Chang , Yi-Nung Liu
IPC: H04N9/31
CPC classification number: H04N9/3179 , H04N9/3144
Abstract: A system for handling a thermal compensation comprises: an image capturing device comprising a capturing circuit, for capturing a first image, and a first sensing circuit, for detecting a first temperature; a projecting device comprising a second sensing circuit, for detecting a second temperature; a storage device, for storing a plurality of first parameters associated with the image capturing device, a plurality of second parameters associated with the projecting device and a reference image associated with the projecting device; and a processing device comprising a processing circuit, for compensating the first image according to the first temperature and the plurality of first parameters, to generate a first compensated image, compensating the reference image according to the second temperature and the plurality of second parameters, to generate a second compensated image, and generating a second image according to the first compensated image and the second compensated image.
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公开(公告)号：US11543696B2
公开(公告)日：2023-01-03
申请号：US16516236
申请日：2019-07-18
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Hung-Shan Chen , Ming-Syuan Chen , Ming-Shu Hsiao , Cheng-Hung Chi , Kuan-Ming Chen , Chin-Jung Tsai , Yi-Nung Liu
IPC: G02F1/1335 , G02F1/1333
Abstract: A liquid crystal element includes a substrate, a diffractive optical element layer, and a liquid crystal material. The diffractive optical element layer has an uneven surface. The liquid crystal material is between the substrate and the uneven surface of the diffractive optical element layer. The liquid crystal material is disposed contiguously with the uneven surface of the diffractive optical element layer.
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公开(公告)号：US10977775B2
公开(公告)日：2021-04-13
申请号：US16504308
申请日：2019-07-07
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Chin-Jung Tsai , Yu-Hsuan Chu , Cheng-Hung Chi , Ming-Shu Hsiao , Nai-Ting Chang , Yi-Nung Liu
Abstract: A depth decoding system and a method for rectifying a ground-truth image are introduced. The depth decoder system includes a projector, a camera, a processor and a decoder. The projector is configured to project a structural light pattern to a first reference plane and a second reference plane. The camera is configured to capture a first ground-truth image from the first reference plane and capture a second ground-truth image from the second reference plane. The processor is configured to perform a rectification operation to the first ground-truth image and the second ground-truth image to generate a rectified ground-truth image. The decoder is configured to generate a depth result according to the rectified ground-truth image.
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公开(公告)号：US11132804B2
公开(公告)日：2021-09-28
申请号：US16736533
申请日：2020-01-07
Applicant: Himax Technologies Limited
Inventor： Wei-Kai Chan , Yi-Nung Liu , Chin-Jung Tsai
Abstract: A hybrid depth estimation system includes a switchable projector that controllably projects either dot light or surface light onto an object; a sensor that receives reflected dot light or reflected surface light from the object to capture a first image or a second image respectively; a dot time-of-flight (ToF) depth generator that generates a dot depth map and an associated dot confidence map according to the first image; a surface ToF depth generator that generates a surface depth map according to the second image; and a denoise processor that processes the surface depth map according to a plurality of points on the dot depth map with high confidence, thereby generating a denoised depth map.
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公开(公告)号：US20200045296A1
公开(公告)日：2020-02-06
申请号：US16053760
申请日：2018-08-02
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Biing-Seng Wu , Yi-Nung Liu , Chin-Jung Tsai , Cheng-Hung Chi , Han-Yi Kuo , Kuan-Ming Chen
IPC: H04N13/271 , G06T7/55 , H04N13/254 , G06T7/521
Abstract: A depth sensing apparatus and an operation method thereof are provided. The depth sensing apparatus includes a projector, multiple cameras, and an image processing circuit. The projector includes a diffraction optical element (DoE) and a light source module. Rays of the light source module selectively pass through at least one of multiple projection style regions of the DoE so as to generate a projection pattern, and the projection pattern is projected to a field. The cameras respectively shoot the projection pattern projected to the field to obtain multiple images. The image processing circuit processes the images to obtain multiple depth maps. The image processing circuit at least merges the depth maps to generate a final depth map of the field.
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Patent Agency Ranking
公开(公告)号：US10042241B1
公开(公告)日：2018-08-07
申请号：US15873902
申请日：2018-01-18
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Cheng-Hung Chi , Yi-Nung Liu
Abstract: A method for projection includes: emitting an input beam to a diffractive optical element (DOE); and diffracting the input beam via the DOE with a specific fan-out angle θ and a number of fan-out points N on a surface, wherein the specific fan-out angle θ and the number of fan-out points N fit the following equation: sin ( θ 2 ) = ( N - 1 ) 2 · λ K Δ , where λ is a wavelength of the input beam, Δ is a pixel size of the DOE, and K is an integer not smaller than N.
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公开(公告)号：US09118879B2
公开(公告)日：2015-08-25
申请号：US14156104
申请日：2014-01-15
Applicant: Himax Technologies Limited , Himax Imaging Limited
Inventor： Yi-Nung Liu , Chih-Tsung Shen , Po-Yen Su , Huan-Pin Tseng
Abstract: A camera array system includes an image sensor device, a hybrid color filter array disposed above the image sensor device, and a lens array disposed above the hybrid color filter array. The hybrid color filter array includes plural kinds of monochromatic color filters and at least one mosaic filter; and the lens array includes a number of optic lenses. The at least one mosaic filter is utilized to perform stereo matching in order to estimate depth information.
Abstract translation: 相机阵列系统包括图像传感器设备，设置在图像传感器设备上方的混合滤色器阵列，以及设置在混合滤色器阵列上方的透镜阵列。 混合滤色器阵列包括多种单色滤色器和至少一个马赛克滤色器; 并且透镜阵列包括多个光学透镜。 所述至少一个马赛克滤波器用于执行立体匹配以便估计深度信息。
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公开(公告)号：US20210209778A1
公开(公告)日：2021-07-08
申请号：US16736533
申请日：2020-01-07
Applicant: Himax Technologies Limited
Inventor： Wei-Kai Chan , Yi-Nung Liu , Chin-Jung Tsai
Abstract: A hybrid depth estimation system includes a switchable projector that controllably projects either dot light or surface light onto an object; a sensor that receives reflected dot light or reflected surface light from the object to capture a first image or a second image respectively; a dot time-of-flight (ToF) depth generator that generates a dot depth map and an associated dot confidence map according to the first image; a surface ToF depth generator that generates a surface depth map according to the second image; and a denoise processor that processes the surface depth map according to a plurality of points on the dot depth map with high confidence, thereby generating a denoised depth map.
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公开(公告)号：US11026303B2
公开(公告)日：2021-06-01
申请号：US16175814
申请日：2018-10-30
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Biing-Seng Wu , Han-Yi Kuo , Kuan-Ming Chen , Li-Chiu Tsai , Yi-Nung Liu
Abstract: An illuminator including a light source and an optical device is provided. The light source is configured to emit light. The optical device is configured to provide uniform illumination with at least one indicating mark after receiving light. The optical device includes a diffusing part and a directing part. The diffusing part is configured to provide uniform illumination. The directing part is configured to provide at least one indicating mark.
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公开(公告)号：US20200041809A1
公开(公告)日：2020-02-06
申请号：US16049818
申请日：2018-07-31
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Ming-Shu Hsiao , Yi-Nung Liu
IPC: G02B27/42 , G02B27/00 , H04N13/207 , G02B5/18 , G02B27/22 , H04N13/254
Abstract: A structured light projector including a light source, an irradiation range controlling device, and a diffractive optical element is provided. The irradiation range controlling device is disposed on a transmission path of a light beam from the light source. The diffractive optical element is disposed on a transmission path of the light beam from the irradiation range controlling device. The irradiation range controlling device is adapted to control an irradiation range of the light beam transmitted to the diffractive optical element so as to change a size of a region of the diffractive optical element illuminated by the light beam from the irradiation range controlling device. A three-dimensional image sensing module using the same is also provided.
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