公开(公告)号：US20150310266A1

公开(公告)日：2015-10-29

申请号：US14791231

申请日：2015-07-02

Applicant: PIXART IMAGING INC.

Inventor： YU-HAO HUANG ,  MING-TSAN KAO ,  SEN-HUANG HUANG ,  NIEN-TSE CHEN ,  EN-FENG HSU ,  YI-YUAN CHEN

IPC: G06K9/00 ,  G06F3/01

CPC classification number: G06K9/00389 ,  G06F3/017 ,  G06K9/00335 ,  G06K9/00355 ,  G06T2207/30196

Abstract: A device for determining a gesture includes a light emitting unit, an image sensing device and a processing circuit. The light emitting unit emits a light beam. The image sensing device captures an image of a hand reflecting the light beam. The processing circuit obtains the image and determines a gesture of the hand by performing an operation on the image; wherein the operation includes: selecting pixels in the image having a brightness greater than or equal to a brightness threshold; dividing the selected pixels; and determining the gesture of the hand according to a number of group of divided pixels. A method for determining a gesture and an operation method of the aforementioned device are also provided.

Abstract translation: 用于确定手势的装置包括发光单元，图像感测装置和处理电路。 发光单元发射光束。 图像感测装置捕获反射光束的手的图像。 处理电路通过对图像执行操作来获得图像并确定手势， 其中所述操作包括：选择具有大于或等于亮度阈值的亮度的图像中的像素; 划分所选择的像素; 以及根据分组像素组的数量确定手的手势。 还提供了一种用于确定上述装置的手势和操作方法的方法。

公开(公告)号：US20140160020A1

公开(公告)日：2014-06-12

申请号：US13931994

申请日：2013-06-30

Applicant: Pixart Imaging Inc

Inventor： YU-HAO HUANG ,  MING-TSAN KAO ,  EN-FENG HSU ,  YI-YUAN CHEN ,  MENG-HUAN HSIEH

IPC: G06F3/0354 ,  G06F3/042

CPC classification number: G06F3/0421 ,  G06F3/011 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0416 ,  G06K9/00375

Abstract: An operation method of an optical touch device includes: emitting, by a light emitting unit, a light beam to illuminate an object; capturing, by an image sensing device, an image of the object reflecting the light beam; selecting all pixels in the image having a brightness greater than or equal to a brightness threshold; sorting the selected pixels along a first coordinate axis of the image, a second coordinate axis of the image or based a pixel brightness; selecting the top first predetermined ratio of pixels from the sorted pixels as an object image of the object; and calculating a gravity center of the object image according to positions of the top first predetermined ratio of pixels or according to the positions of the top first predetermined ratio of pixels with a weight of pixel brightness. An optical touch device is also provided.

Abstract translation: 光触摸装置的操作方法包括：通过发光单元发射光束照射物体; 通过图像感测装置捕获反射光束的物体的图像; 选择具有大于或等于亮度阈值的亮度的图像中的所有像素; 沿着图像的第一坐标轴，图像的第二坐标轴或者基于像素亮度对所选择的像素进行排序; 从所述分类像素中选择所述顶部第一预定比例的像素作为所述对象的对象图像; 以及根据所述顶部第一预定比例的像素的位置或根据所述顶部第一预定比例像素的位置与像素亮度的权重来计算所述对象图像的重心。 还提供了一种光学触摸装置。