Patent ID: 11900616
Assignee: HANGZHOU TARO POSITIONING TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for analyzing an object in a scene, comprising:
capturing, using a camera device, a sequence of images of the scene comprising a light source attached to a first element of a plurality of elements comprised in the object;
detecting, by a hardware processor based on a pattern of local light change across the sequence of images, the light source in the scene;
determining, by the hardware processor, a location of the light source in at least one image of the sequence of images;
generating, by the hardware processor based on the location of the light source and a dynamic model of the object, a region-of-interest for analyzing the object; and
generating an analysis result of the object based on the region-of-interest, wherein a pre-determined task is performed based on the analysis result,
wherein the dynamic model comprises nodes representing at least one selected from a group consisting of a head element, a neck element, a pelvis element, a knee element, and an ankle element of the object,
wherein the pre-determined task is performed by applying at least one selected from a group consisting of a facial expression recognition algorithm and a hand gesture recognition algorithm to the region-of-interest,
wherein the dynamic model describes mechanical linkages among the plurality of elements,
wherein the location of the light source in the at least one image corresponds to the location of the first element in the scene, and
wherein generating the region-of-interest comprises:
determining, based on the mechanical linkages, a range limitation of a second element of the plurality of elements relative to the first element, and
determining, based on the location of the light source and the range limitation, a probability map of the location of the second element in the scene.