公开(公告)号：US10944941B2

公开(公告)日：2021-03-09

申请号：US16833677

申请日：2020-03-30

Applicant: PixArt Imaging Inc.

Inventor： Wen-Cheng Yen ,  Wen-Han Yao

IPC: H04N7/18 ,  G08B13/196 ,  G06T7/246

Abstract: A smart motion detection device with a determining method includes a memory, a processor, and a sensor array coupled to the memory and the processor. An image captured by the sensor array is processed by the processor. The sensor array is adapted to pre-store the image into the memory when the processor is operated in the sleep mode, and the pre-stored image is transmitted to the processor when the processor is operated in the wakeup mode. The sensor array includes a comparator adapted to generate an alarm signal for switching the processor from the sleep mode to the wakeup mode in accordance with a comparison result of the pre-stored image. The determining method includes the processor analyzing images captured by the sensor array when the sensor array is activated to capture the images, and the processor analyzing images pre-stored inside the memory when the sensor array is not activated.

公开(公告)号：US09961338B2

公开(公告)日：2018-05-01

申请号：US15051678

申请日：2016-02-24

Applicant: PixArt Imaging Inc.

Inventor： Chien-Jung Chou ,  Mei-Chao Yeh ,  Wen-Cheng Yen

IPC: H04N5/217 ,  H04N17/00 ,  H04N5/365 ,  H04N5/3745

CPC classification number: H04N17/002 ,  H04N5/3655 ,  H04N5/3658 ,  H04N5/3745

Abstract: A method for reducing fixed pattern noise of an image sensor is provided. The method includes: accessing pixel data of at least one test frame in a test environment; and calculating/deriving average values of each column based on at least one portion of pixel data of the column in the at least one test frame, wherein the average values of columns are used as calibration values for calibrating image pixel data of columns when the image sensor operates in a normal light source environment.

公开(公告)号：US20170026596A1

公开(公告)日：2017-01-26

申请号：US15051678

申请日：2016-02-24

Applicant: PixArt Imaging Inc.

Inventor： Chien-Jung Chou ,  Mei-Chao Yeh ,  Wen-Cheng Yen

IPC: H04N5/365 ,  H04N17/00

CPC classification number: H04N17/002 ,  H04N5/3655 ,  H04N5/3658 ,  H04N5/3745

Abstract: A method for reducing fixed pattern noise of an image sensor is provided. The method includes: accessing pixel data of at least one test frame in a test environment; and calculating/deriving average values of each column based on at least one portion of pixel data of the column in the at least one test frame, wherein the average values of columns are used as calibration values for calibrating image pixel data of columns when the image sensor operates in a normal light source environment.

Abstract translation: 提供了一种用于降低图像传感器的固定图案噪声的方法。 该方法包括：在测试环境中访问至少一个测试帧的像素数据; 以及基于所述至少一个测试帧中的所述列的像素数据的至少一部分来计算/导出每列的平均值，其中，所述列的平均值用作校准所述列的图像像素数据的校准值 传感器在正常的光源环境中工作。