Patent ID: 11861814
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus for sensing an image based on an event, comprising:
memory in which at least one program is recorded; and
a processor for executing the program,
wherein the program performs
acquiring at least one of brightness information and color information from an input image signal,
performing conversion including at least one of filtering of at least one of the acquired brightness information and color information, brightness conversion, and color conversion,
calculating a quantized difference for each pixel between a first converted image, converted from the currently input image signal, and a second converted image, converted from a previously input image signal, and
generating a bitstream for a pixel having a change on a time axis based on the quantized difference;
wherein:
when the second converted image comprises multiple second converted images, calculating the quantized difference is configured to compute a weighted sum of the multiple second converted images based on respective weights assigned to the multiple second converted images and to calculate a difference from the first converted image,
where a sum of the weights is ‘1’.