# US 2021/0344950 A1 · Video compression apparatus and video compression program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0344950 A1 - Document ID: US20210344950A1 - Status: Published application - Kind: A1 - Application number: 17/374,528 - Filed: 2021-07-13 - Published: 2021-11-04 - Earliest claimed: 2017-09-29 - Assignees: Nikon Corporation - Applicants: Nikon Corporation - Inventors: Daisaku KOMIYA; Naoki SEKIGUCHI - Web page: https://patentgrep.com/patent/US20210344950A1 ## CPC - H04N 19/167: Position within a video image, e.g. region of interest [ROI] - H04N 19/57: Motion estimation characterised by a search window with variable size or shape - H04N 19/105: Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction - H04N 19/139: Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability - H04N 19/17: the unit being an image region, e.g. an object - H04N 23/61: based on recognised objects - H04N 23/62: Control of parameters via user interfaces - H04N 23/80: Camera processing pipelines; Components thereof - H04N 25/50: Control of the SSIS exposure - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A video compression apparatus for compressing video data as a series of frames outputted from an imaging element that has a plurality of imaging regions for imaging a subject and for which imaging conditions can be set for the respective imaging regions, includes: a setting unit configured to set, based on an imaging condition set in a compression target region of a frame different from a reference frame, a search region for detecting a specific region in the reference frame; and a detection unit configured to detect, based on the compression target region, the specific region in the search region set by the setting unit. ## Claims ### Claim 1 A video compression apparatus for compressing video data as a series of frames outputted from an imaging element that has a plurality of imaging regions for imaging a subject and for which imaging conditions can be set for the respective imaging regions, comprising: a setting unit configured to set, based on an imaging condition set in a compression target region of a frame different from a reference frame, a search region for detecting a specific region in the reference frame; and a detection unit configured to detect, based on the compression target region, the specific region in the search region set by the setting unit. ### Claim 2 (depends on 1) The video compression apparatus according to claim 1, wherein the setting unit is configured to set the search region to the specific image region and image regions of other imaging conditions surrounding the specific image region. ### Claim 3 (depends on 1) The video compression apparatus according to claim 1, wherein the setting unit is configured to magnify or reduce the search region based on the relation among the plurality of imaging conditions. ### Claim 4 (depends on 3) The video compression apparatus according to claim 3, wherein the setting unit is configured to magnify or reduce the search region based on a difference among values shown by the plurality of imaging conditions. ### Claim 5 (depends on 3) The video compression apparatus according to claim 3, wherein the setting unit is configured to reduce the search region when the specific imaging condition is a specific exposure time and other imaging conditions among the plurality of imaging conditions other than the specific imaging condition is an exposure time shorter than the specific exposure time. ### Claim 6 (depends on 1) The video compression apparatus according to claim 1, wherein the setting unit is configured to set, as a first search region, a specific image region among image regions of images generated and having a plurality of imaging conditions that has a specific imaging condition and in which the compression target region exists and set, as a second search region, image regions other than the specific image region among the image regions, wherein the generation unit is configured to use the first search region set by the setting unit and the second search region set by the setting unit to execute the processing having different pixel accuracies to thereby generate the motion vector. ### Claim 7 (depends on 2) The video compression apparatus according to claim 2, wherein the generation unit is configured to execute the processing exterior of the search region based on the result of the processing in the search region. ### Claim 8 (depends on 2) The video compression apparatus according to claim 2, further comprising: a control unit configured to execute a block matching for a search target range as a matching target with the compression target region in the search region based on the ratio between specific pixels included in the search target range and the specific image region and other pixels included in the image regions other than the search target range and the specific image region. ### Claim 9 A video compression apparatus for compressing video data as a series of frames outputted from an imaging element that has a plurality of imaging regions for imaging a subject and for which imaging conditions can be set for the respective imaging regions, comprising: a setting unit configured to set a search region for detecting a specific region within a reference frame based on at least one of the plurality of imaging conditions set to the imaging element; and a detection unit configured to detect, based on a compression target region having a frame different from the reference frame, the specific region from the search region set by the setting unit. ### Claim 10 A video compression program for causing a processor to execute the compression of video data as a series of frames outputted from an imaging element that has a plurality of imaging regions for imaging a subject and for which imaging conditions can be set for the respective imaging regions, wherein the video compression program causes the processor: to set, based on an imaging condition set in a compression target region of a frame different from a reference frame, a search region for detecting a specific region in the reference frame; and to detect, based on the compression target region, the specific region in the search region. ### Claim 11 A video compression program for causing a processor to execute the compression of video data as a series of frames outputted from an imaging element that has a plurality of imaging regions for imaging a subject and for which imaging conditions can be set for the respective imaging regions, to set a search region for detecting a specific region within a reference frame based on at least one of the plurality of imaging conditions set to the imaging element; and to detect, based on a compression target region having a frame different from the reference frame, the specific region from the search region set by the setting unit.