# US 2014/0152867 A1 · Image processing device and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152867 A1 - Document ID: US20140152867A1 - Status: Published application - Kind: A1 - Application number: 14/074,862 - Filed: 2013-11-08 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: JVC KENWOOD Corporation - Applicants: JVC KENWOOD Corporation - Inventors: Ryuji SHIRAKAWA - Web page: https://patentgrep.com/patent/US20140152867A1 ## CPC - H04N 23/745: Detection of flicker frequency or suppression of flicker wherein the flicker is caused by illumination, e.g. due to fluorescent tube illumination or pulsed LED illumination - H04N 23/70: Circuitry for compensating brightness variation in the scene - H04N 23/71: Circuitry for evaluating the brightness variation - H04N 23/951: by using two or more images to influence resolution, frame rate or aspect ratio - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A flash detection unit is configured to detect whether or not each frame of image data includes a high luminance portion due to a flash. A holding unit is configured to hold a past frame of the image data. A correction processing unit is configured to, if it is detected by the flash detection unit that frames include high luminance portions, correct the image data so as to consolidate a first image data and a second image data into one frame. The first image data is included in a first portion in a first frame stored in the holding unit. The second image data is included in a second portion in a second frame which is adjacent to the first frame. The first and second portions are high luminance portions. ## Claims ### Claim 1 An image processing device comprising: a flash detection unit configured to detect whether or not each frame of image data includes a high luminance portion due to a flash; a holding unit configured to hold a past frame of the image data; and a correction processing unit configured to, if it is detected by the flash detection unit that frames include high luminance portions, correct the image data so as to consolidate a first image data and a second image data into one frame, the first image data being included in a first portion in a first frame stored in the holding unit, the second image data being included in a second portion in a second frame which is adjacent to the first frame, the first and second portions being high luminance portions. ### Claim 2 (depends on 1) The image processing device according to claim 1, wherein when a combined portion formed by combining the first and second portions makes an entire portion equal to or greater than the size of one frame, the correction processing unit corrects the image data so as to consolidate the first image data and the second image data into one frame. ### Claim 3 (depends on 1) The image processing device according to claim 1, wherein the flash detection unit includes: a line average luminance calculation section configured to calculate a line average luminance of each line of a target frame; a frame average luminance calculation section configured to calculate a frame average luminance of a past frame at least one frame before the target frame, the frame average luminance based on the line average luminance of each line of the target frame calculated by the line average luminance calculation section; a flash determination section configured to determine whether or not some lines in the target frame are high luminance, by comparing the line average luminance of each line of the target frame with the frame average luminance. ### Claim 4 (depends on 1) The image processing device according to claim 1, wherein the flash detection unit includes: a block average luminance calculation section configured to calculate a block average luminance of each of multiple blocks which are obtained by dividing each line of a target frame; a line average luminance calculation section configured to calculate a line average luminance of each line of the target frame, the line average luminance based on the block average luminances of each line calculated by the block average luminance calculation section; a frame average luminance calculation section configured to calculate a frame average luminance of the past frame, the frame average luminance based on the line average luminances of each line of the past frame calculated by the line average luminance calculation section; a difference calculation section configured to calculate a difference value between each block average luminance and the frame average luminance and a difference value between each line average luminance and the frame average luminance; and a flash determination section configured to determine that some lines in the target frame are high luminance, provided that at least a predetermined number of consecutive lines are in a particular state, the particular state being a state in which the difference between the line average luminance and the frame average luminance is equal to or greater than a first threshold value and the difference between each block average luminance and the frame average luminance is equal to or greater than a second threshold value. ### Claim 5 (depends on 1) The image processing device according to claim 1, further comprising a recording/reproduction unit configured to record and reproduce image data, wherein the correction processing unit corrects the image data reproduced from the recording/reproduction unit. ### Claim 6 (depends on 1) The image processing device according to claim 1, further comprising a recording unit configured to record the image data corrected by the correction processing unit. ### Claim 7 An image processing method, comprising: detecting whether or not each frame of image data includes a high luminance portion due to a flash; holding a past frame of the image data in a holding unit; and if it is detected that frames include high luminance portions, correcting the image data so as to consolidate a first image data and a second image data into one frame, the first image data being included in a first portion in a first frame stored in the holding unit, the second image data being included in a second portion in a second frame which is adjacent to the first frame, the first and second portions being high luminance portions.