US 12,243,291 B2
Low-resolution imaging apparatus, action recognition method, action recognition apparatus and action recognition system
Song Min Kim, Daejeon (KR); Seung Woo Shim, Daejeon (KR); and Hyeon Ho Shin, Daejeon (KR)
Assigned to KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Daejeon (KR)
Filed by Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed on Dec. 23, 2022, as Appl. No. 18/088,374.
Claims priority of application No. 10-2022-0148719 (KR), filed on Nov. 9, 2022; and application No. 10-2022-0174609 (KR), filed on Dec. 14, 2022.
Prior Publication US 2024/0153244 A1, May 9, 2024
Int. Cl. G06V 10/77 (2022.01); G06V 10/62 (2022.01); G06V 10/774 (2022.01); H04N 7/18 (2006.01); H04N 23/65 (2023.01); H04N 23/72 (2023.01); H04N 23/73 (2023.01); H04N 23/741 (2023.01)
CPC G06V 10/7715 (2022.01) [G06V 10/62 (2022.01); H04N 7/183 (2013.01); H04N 23/65 (2023.01); H04N 23/72 (2023.01); H04N 23/73 (2023.01); H04N 23/741 (2023.01); G06V 10/774 (2022.01)] 21 Claims
OG exemplary drawing
 
1. A low-resolution imaging apparatus configured to form and transmit a low-resolution image of an object, the low-resolution imaging apparatus comprising:
a low-resolution camera configured to form the low-resolution image of the object;
a microcontroller including an analog-to-digital convertor (ADC) that converts the low-resolution image into a digital image;
an energy harvesting module configured to provide power to the low-resolution camera and the microcontroller; and
a radio frequency identification (RFID) unit configured to transmit the digital-converted low-resolution image,
wherein the RFID unit is configured to transmit the digital-converted low-resolution image to an external apparatus, and
the external apparatus is configured to
extract pixel values of pixels at the same position in two consecutive frames of the image formed by the low-resolution camera,
calculate an average of the pixel values of the pixels, in which a difference between the extracted pixel values is greater than a threshold value,
calculate a set value of the low-resolution camera to correspond to the calculated average of the pixel values, and
transmit the set value of the low-resolution camera to the low-resolution imaging apparatus.