US 12,450,689 B2
Object detection method and device
Ho Hyon Song, Seoul (KR)
Assigned to Nextchip Co., Ltd., Seongnam-si (KR)
Appl. No. 18/005,139
Filed by Nextchip Co., Ltd., Seongnam-si (KR)
PCT Filed Apr. 29, 2021, PCT No. PCT/KR2021/005425
§ 371(c)(1), (2) Date Jan. 11, 2023,
PCT Pub. No. WO2022/014831, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 10-2020-0086968 (KR), filed on Jul. 14, 2020.
Prior Publication US 2023/0260080 A1, Aug. 17, 2023
Int. Cl. G06T 3/40 (2024.01); G06T 5/50 (2006.01)
CPC G06T 3/40 (2013.01) [G06T 5/50 (2013.01); G06T 2207/20016 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30252 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An object detection method performed by an electronic device, the object detection method comprising:
generating a first image by downscaling an original image to a first resolution;
generating a second image by downscaling the original image to a second resolution that is different from the first resolution;
detecting at least one first object by scanning at least one of the original image, the first image, and the second image by using a preset object detection filter;
determining a target image among the original image, the first image, and the second image; and
detecting at least one second object in the target image by using a neural network-based object detection model,
wherein the determining the target image among the original image, the first image, and the second image comprises:
determining whether the number of previous objects detected in a previous target image prior to the target image is greater than or equal to a first threshold that is preset for a previous resolution of the previous target image; and
when the number of previous objects is greater than or equal to the first threshold, determining an image of a resolution that is lower than the previous resolution to be the target image.