Patent ID: 11928802
Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus for acquiring a depth image, comprising:
an emitting module configured to emit a speckle array to an object, wherein the speckle array comprises p number of mutually spaced apart speckles;
a receiving module comprising an image sensor, the image sensor comprising a sensor array, the sensor array comprising m*n pixel units, wherein each of the pixel units comprises a Complementary Metal Oxide Semiconductor (CMOS) photodiode and a photoelectric signal reading circuit, the photodiode is configured to receive the speckle array reflected by the object, and generate a corresponding photocurrent signal based on the speckle array, a current intensity indicated by the photocurrent signal is positively correlated with a light intensity of light beam irradiation received by the photodiode, and the photoelectric signal reading circuit is configured to read the photocurrent signal and output a corresponding pixel signal; and
a processing unit configured to receive the pixel signal and generate a sparse depth image based on the pixel signal, the p speckles indicating a resolution of the sparse depth image, wherein the processing unit is further configured to align an RGB image having a resolution of a*b with the sparse depth image, and fuse the aligned sparse depth image with the RGB image using a pre-trained image fusion model to obtain a dense depth image, wherein the RGB image is a two-dimensional image acquired by an RGB camera with a and b being numbers of pixels in the two dimensions of the RGB image respectively, and the dense depth image has a resolution of a*b.