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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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2.发明授权公开(公告)号：US10306152B1
公开(公告)日：2019-05-28
申请号：US15896089
申请日：2018-02-14
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Yu-Hsuan Chu , Chin-Jung Tsai
Abstract: An auto-exposure (AE) control system, includes a camera configured to capture an input image, a region of interest (ROI) determination circuit configured to determine a ROI of the input image, a depth decoder and an AE controller. The depth decoder is configured to generate a depth map of the input image and determine a decode rate value according to the depth map of the input image and the ROI of the input image. The AE controller includes an exposure adjustment circuit which is configured to receive a decode rate value and the detection result and sequentially adjust a plurality of the exposure parameters according to the variation of the decode rate value. A step size for adjusting the plurality of the exposure parameters is determined according to the variation of the decode rate value and the detection result.
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Patent Agency Ranking
公开(公告)号：US10939047B2
公开(公告)日：2021-03-02
申请号：US16517701
申请日：2019-07-22
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Yu-Hsuan Chu , Yi-Nung Liu
Abstract: A method for performing auto-exposure (AE) control in a depth sensing system includes: capturing a first reference image and a second reference image of a scene based on different illumination conditions; calculating a plurality of first block means with respect to first blocks of the first reference frame and calculating a plurality of second block means with respect to second blocks of the second reference frame; calculating a plurality of block mean differences according to the first block means and the second block means; determining a plurality of first region of interest (ROI) blocks from the first blocks and a plurality of a second ROI blocks from the second blocks; and performing an AE control over the depth sensing system according to blocks means of the first ROI blocks and blocks means of the second ROI blocks.
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公开(公告)号：US20200184611A1
公开(公告)日：2020-06-11
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：US20220408008A1
公开(公告)日：2022-12-22
申请号：US17355026
申请日：2021-06-22
Applicant: Himax Technologies Limited
Inventor： Yu-Hsuan Chu , Yi-Nung Liu
Abstract: A high-dynamic-range (HDR) detecting system includes a camera module comprising an image sensor; and a vision module that receives data generated by the camera module and accordingly transmits feedback to the camera module. The camera module comprises a multiple-exposure unit that provides different exposure settings, according to which a plurality of images are captured by the image sensor. The vision module comprises an object detection device that detects objects in the plurality of images, thereby resulting in object detection results as metadata.
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公开(公告)号：US20220394221A1
公开(公告)日：2022-12-08
申请号：US17341769
申请日：2021-06-08
Applicant: Himax Technologies Limited
Inventor： Chin-Jung Tsai , Nai-Ting Chang , Yu-Hsuan Chu
IPC: H04N9/31
Abstract: A structured-light scanning system with thermal compensation includes a structured-light projector that generates a predetermined projected pattern of light, which is then projected onto and reflected from an object, thereby resulting in a reflected pattern of light; an image sensor that captures the reflected pattern of light; and a digital processing unit that generates a depth map according to the reflected pattern of light and a compensated projected pattern associated with a current temperature.
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公开(公告)号：US20210029284A1
公开(公告)日：2021-01-28
申请号：US16517701
申请日：2019-07-22
Applicant: HIMAX TECHNOLOGIES LIMITED
Inventor： Yu-Hsuan Chu , Yi-Nung Liu
Abstract: A method for performing auto-exposure (AE) control in a depth sensing system includes: capturing a first reference image and a second reference image of a scene based on different illumination conditions; calculating a plurality of first block means with respect to first blocks of the first reference frame and calculating a plurality of second block means with respect to second blocks of the second reference frame; calculating a plurality of block mean differences according to the first block means and the second block means; determining a plurality of first region of interest (ROI) blocks from the first blocks and a plurality of a second ROI blocks from the second blocks; and performing an AE control over the depth sensing system according to blocks means of the first ROI blocks and blocks means of the second ROI blocks.
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