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公开(公告)号：US20200093368A1
公开(公告)日：2020-03-26
申请号：US16679421
申请日：2019-11-11
Applicant: PIXART IMAGING INC.
Inventor： Yu-Hao HUANG
Abstract: A method of identifying iris includes: providing incident beams entering an eye locating at a reference position; setting a first, a second and a third reference point for locating the eye at the reference position; forming a first, a second and a third measuring glint by the incident beams after the eye moves from the reference position to a measuring position, and positions of the first, the second and the third measuring glint corresponding to the positions of the first, the second and the third reference point; capturing an eye image including a first, a second, a third measuring glint image and an iris image; comparing the gray scale value with a threshold gray scale value to obtain the positions of the first, the second and the third measuring glint; and calculating a first and a second variation to obtain an resolution variation of the iris image.
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公开(公告)号：US20160328027A1
公开(公告)日：2016-11-10
申请号：US15217701
申请日：2016-07-22
Applicant: PIXART IMAGING INC.
Inventor： Yu-Hao HUANG , Ming-Tsan KAO , Sen-Huang HUANG
IPC: G06F3/03
CPC classification number: G06F3/0317 , G06F3/03543 , G06F3/038
Abstract: There is provided an optical navigation device including an image sensor, a processing unit, a storage unit and an output unit. The image sensor is configured to successively capture images. The processing unit is configured to calculate a current displacement according to the images and to compare the current displacement or an accumulated displacement with a threshold so as to determine an outputted displacement. The storage unit is configured to save the accumulated displacement. The output unit is configured to output the outputted displacement with a report rate.
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公开(公告)号：US20130329962A1
公开(公告)日：2013-12-12
申请号：US13858131
申请日：2013-04-08
Applicant: PIXART IMAGING INC.
Inventor： Ming-Tsan KAO , Ren-Hau GU , Yu-Hao HUANG
IPC: G06T7/00
CPC classification number: G06T7/004 , G06F3/0304 , G06F3/0317 , G06F3/03543 , G06F3/0383 , G06T7/246 , G06T2207/10016
Abstract: A displacement detection device includes a light source, an image sensor and a processing unit. The light source is configured to illuminate a work surface. The image sensor is configured to capture reflected light from the work surface and to output an image frame. The processing unit is configured to select a window of interest in the image frame having a maximum image feature and to calculate a displacement of the displacement detection device according to the window of interest.
Abstract translation: 位移检测装置包括光源，图像传感器和处理单元。 光源被配置为照亮工作表面。 图像传感器被配置为捕获来自工作表面的反射光并输出图像帧。 处理单元被配置为在具有最大图像特征的图像帧中选择感兴趣的窗口，并且根据感兴趣的窗口来计算位移检测装置的位移。
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公开(公告)号：US20130229514A1
公开(公告)日：2013-09-05
申请号：US13758304
申请日：2013-02-04
Applicant: PIXART IMAGING INC.
Inventor： Yu-Hao HUANG , Hsin-Chia CHEN , Ming-Tsan KAO , Sen-Huang HUANG
IPC: G01C11/02
CPC classification number: G01C11/02 , G06F1/3259 , G06F3/0317 , G06F3/03543 , G06F3/03547 , G06F3/0383 , G06F2203/0338 , Y02D10/155
Abstract: There is provided a displacement detection device including an image sensor, a light source, a light control unit and a processing unit. The image sensor captures image frames at a sampling frequency. The light source provides, in a speed mode, light for the image sensor in capturing the image frames. The light control unit controls the light source with the speed mode to turn on at a lighting frequency or to turn off serially. The processing unit calculates a displacement according to the image frames captured when the light source turns on to be served as an estimated displacement for an interval during which the light source turns off. There is further provided an operating method of a displacement detection device.
Abstract translation: 提供了包括图像传感器，光源，光控制单元和处理单元的位移检测装置。 图像传感器以采样频率捕获图像帧。 光源在速度模式下提供用于图像传感器捕获图像帧的光。 光控制单元以速度模式控制光源，以点亮频率开启或连续关闭。 处理单元根据在光源打开时拍摄的图像帧来计算作为光源关闭的间隔的估计位移的位移。 还提供了一种位移检测装置的操作方法。
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公开(公告)号：US20180160079A1
公开(公告)日：2018-06-07
申请号：US15886013
申请日：2018-02-01
Applicant: PixArt Imaging Inc.
Inventor： Yu-Hao HUANG , Yi-Fang LEE , Ming-Tsan KAO , Meng-Huan HSIEH , En-Feng HSU , Nien-Tse CHEN
CPC classification number: H04N7/18 , G02B27/0093 , G06F3/013 , G06K9/00597
Abstract: A pupil detection device includes an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball. The image sensor captures at least one image frame of the eyeball to be served as an image to be identified. The processing unit is configured to calculate a minimum gray value in the image to be identified and to identify a plurality of pixels surrounding the minimum gray value and having gray values within a gray value range as a pupil area.
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Patent Agency Ranking
公开(公告)号：US20160133024A1
公开(公告)日：2016-05-12
申请号：US14996777
申请日：2016-01-15
Applicant: PIXART IMAGING INC.
Inventor： Yu-Hao HUANG , En-Feng HSU
CPC classification number: G06T7/74 , G06F3/017 , G06F3/0304 , G06K9/00335 , G06T2207/30196 , H04N5/2256
Abstract: A method and system provide light to project to an operation space so that a received image from the operation space will include, if an object is in the operation space, a bright region due to the reflection of light by the object, and identify a gesture according to the variation of a barycenter position, an average brightness, or an area of the bright region in successive images, for generating a corresponding command. Only simple operation and calculation is required to detect the motion of an object moving in the X, Y, or Z axis of an image, for identifying a gesture represented by the motion of the object.
Abstract translation: 一种方法和系统提供光以投射到操作空间，使得如果物体在操作空间中，来自操作空间的接收图像将包括由于物体反射光而导致的明亮区域，并且识别手势 根据重心位置的变化，平均亮度或连续图像中的明亮区域的面积来生成相应的命令。 仅需要简单的操作和计算来检测在图像的X，Y或Z轴上移动的对象的运动，以识别由对象的运动表示的手势。
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公开(公告)号：US20160370859A1
公开(公告)日：2016-12-22
申请号：US15253503
申请日：2016-08-31
Applicant: PIXART IMAGING INC.
Inventor： Yu-Hao HUANG , Ming-Tsan KAO , Yi-Fang LEE , En-Feng HSU , Meng-Huan HSIEH , Nien-Tse CHEN
CPC classification number: G06K9/00604 , G06F3/013 , H04N5/2354
Abstract: There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.
Abstract translation: 提供了一种包括主动光源，图像传感器和处理单元的光瞳跟踪装置。 主动光源以第一亮度值和第二亮度值交替地向眼球发光。 图像传感器捕获对应于第一亮度值的第一亮度图像和对应于第二亮度值的第二亮度图像。 处理单元将第一亮度图像和第二亮度图像的相应位置处的最亮区域识别为活动光图像。
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8.发明申请GESTURE RECOGNITION METHOD AND APPARATUS WITH IMPROVED BACKGROUND SUPPRESSION 有权具有改进的背景抑制的姿势识别方法和装置公开(公告)号：US20140023230A1
公开(公告)日：2014-01-23
申请号：US13940744
申请日：2013-07-12
Applicant: PixArt Imaging Inc
Inventor： Yu-Hao HUANG , Ming-Tsan KAO , Sen-Huang HUANG
IPC: G06K9/00
CPC classification number: G06K9/00335 , G06T7/50 , G06T7/60
Abstract: A gesture recognition method with improved background suppression includes the following steps. First, a plurality of images are sequentially captured. Next, a position of at least one object in each of the images is calculated to respectively obtain a moving vector of the object at different times. Then, an average brightness of the object in each of the images is calculated. Finally, magnitudes of the moving vectors of the object at different times are respectively adjusted according to the average brightness of the object in each of the images. There is further provided a gesture recognition apparatus using the method mentioned above.
Abstract translation: 具有改进的背景抑制的手势识别方法包括以下步骤。 首先，依次捕获多个图像。 接下来，计算每个图像中的至少一个对象的位置，以分别在不同时间获得对象的移动向量。 然后，计算每个图像中的对象的平均亮度。 最后，根据每个图像中对象的平均亮度，分别调整不同时间的对象的移动向量的大小。 还提供了使用上述方法的手势识别装置。
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公开(公告)号：US20140022371A1
公开(公告)日：2014-01-23
申请号：US13934311
申请日：2013-07-03
Applicant: PixArt Imaging Inc.
Inventor： Yu-Hao HUANG , Yi-Fang LEE , Ming-Tsan KAO , Meng-Huan HSIEH , En-Feng HSU , Nien-Tse CHEN
IPC: H04N7/18
CPC classification number: H04N7/18 , G02B27/0093 , G06F3/013 , G06K9/00597
Abstract: A pupil detection device includes an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball. The image sensor captures at least one image frame of the eyeball to be served as an image to be identified. The processing unit is configured to calculate a minimum gray value in the image to be identified and to identify a plurality of pixels surrounding the minimum gray value and having gray values within a gray value range as a pupil area.
Abstract translation: 瞳孔检测装置包括主动光源，图像传感器和处理单元。 主动光源向眼球发光。 图像传感器捕获眼球的至少一个图像帧作为要识别的图像。 处理单元被配置为计算要识别的图像中的最小灰度值，并且识别周围最小灰度值的多个像素，并且具有作为瞳孔区域的灰度值范围内的灰度值。
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公开(公告)号：US20130113759A1
公开(公告)日：2013-05-09
申请号：US13632381
申请日：2012-10-01
Applicant: PixArt Imaging Inc.
Inventor： Ren-Hau GU , Yu-Hao HUANG , Hsin-Chia CHEN , Yen-Min CHANG
IPC: G06F3/042
CPC classification number: G06F3/0416 , G06F3/03547 , G06F3/0421
Abstract: There is provided a displacement detection device including a light source, an image sensor and a processing unit. The light source provides light to a finger with a light source parameter. The image sensor receives reflected light from the finger, outputs valid images when the light source is being turned on and outputs dark images when the light source is being turned off. The processing unit determines a contact status according to one of the dark images and one of the valid images, and calculates a displacement according to two of the valid images to accordingly adjust the light source parameter.
Abstract translation: 提供了一种包括光源，图像传感器和处理单元的位移检测装置。 光源为手指提供光源参数。 图像传感器从手指接收反射光，当光源打开时输出有效图像，并在光源关闭时输出暗影像。 处理单元根据暗图像和其中一个有效图像确定接触状态，并且根据两个有效图像计算位移，以相应地调整光源参数。
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