# US 8,787,617 B2 · Imaging apparatus, mobile body detecting method, mobile body detecting circuit and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,617 B2 - Document ID: US8787617B2 - Status: Granted - Kind: B2 - Application number: 12/716,559 - Filed: 2010-03-03 - Published: 2010-09-16 - Granted: 2014-07-22 - Earliest claimed: 2009-03-11 - Assignees: Sony Corporation - Applicants: Katsuaki Nishino - Inventors: Katsuaki Nishino - Web page: https://patentgrep.com/patent/US8787617B2 ## CPC - G06T 7/254: involving subtraction of images - G06V 10/60: relating to illumination properties, e.g. using a reflectance or lighting model - G06V 20/52: Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69) - H04N 23/611: where the recognised objects include parts of the human body - G06T 2207/30201: Face - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An imaging apparatus includes: a moving body detecting section that detects if an object in an image is a moving body which makes a motion between frames; and an attribute determining section that determines a similarity indicating whether or not the object detected as the moving body is similar among a plurality of frames, and a change in luminance of the object based on a texture and luminance of the object, and, when determining that the object is a light/shadow-originated change in luminance, adds attribute information indicating the light/shadow-originated change in luminance to the object detected as the moving body. ## Claims ### Claim 1 An imaging apparatus comprising: a moving body detecting section that detects if an object in an image is a moving body which makes a motion between frames; and an attribute determining section that (1) performs light/shadow detection on the object by determining (a) a similarity indicating whether or not the object, detected as the moving body by the moving body detecting section, is similar among a plurality of frames, and (b) a change in luminance of the object based on a texture and luminance of the object, and, (2) when determining that the object detected as moving is instead detected due to a light/shadow-originated change in luminance rather than due to moving, adds attribute information indicating the light/shadow-originated change in luminance to the object detected as the moving body. ### Claim 2 (depends on 1) The imaging apparatus according to claim 1, wherein the attribute dote determining section includes: a moving body determining section that determines whether the object is temporarily halting or is a moving body; a texture determining section that determines a texture intensity of the object determined as the moving body in a predetermined frame; a similarity determining section that determines a similarity of the object among the plurality of frames based on the texture determined by the texture determining section; and an erroneous-light/shadow-detection determining section that determines whether or not the object determined as being temporarily halting by the moving body determining section or the object whose similarity has been determined by the similarity determining section is erroneously detected as a light/shadow. ### Claim 3 (depends on 2) The imaging apparatus according to claim 2, wherein the texture determining section determines the texture intensity of the object based on a variation in change in luminance of the object, and the similarity determining section determines the similarity of the object by setting a similarity-determining threshold value high for a portion whose texture intensity is low and setting the similarity-determining threshold value low for a portion whose texture intensity is high. ### Claim 4 (depends on 2) The imaging apparatus according to claim 2, wherein the similarity determining section separates the object into a static area commonly included in the plurality of frames and a dynamic area which differs among the plurality of frames, and determines that the object is a light/shadow-originated change in luminance when a similarity of the static area is higher than a predetermined threshold value. ### Claim 5 (depends on 4) The imaging apparatus according to claim 4, further comprising: a meta data generating section that generates meta data containing the attribute information indicating that the object is a light/shadow-originated change in luminance, and basic information of the image based on the object to which the attribute information is added; and a transfer section that transfers the meta data generated by the meta data generating section. ### Claim 6 A moving body detecting method comprising the steps of: detecting if an object in an image, output by an imaging section, is a moving body which makes a motion between frames; and performing light/shadow detection on the object by determining (a) a similarity indicating whether or not the object, detected as the moving body, is similar among a plurality of frames, and (b) a change in luminance of the object based on a texture and luminance of the object; and, when determining that the object detected as moving is instead detected due to a light/shadow-originated change in luminance rather than due to moving, adding attribute information indicating the light/shadow-originated change in luminance to the object detected as the moving body. ### Claim 7 A moving body detecting circuit comprising: a moving body detecting section that detects if an object in an image is a moving body which makes a motion between frames; and an attribute determining section that, (1) performs light/shadow detection on the object by determining (a) a similarity indicating whether or not the object detected as the moving body, by the moving body detecting section, is similar among a plurality of frames, and (b) a change in luminance of the object based on a texture and luminance of the object, and, (2) when determining that the object detected as moving is instead detected due to a light/shadow-originated change in luminance rather than due to moving, adds attribute information indicating the light/shadow-originated change in luminance to the object detected as the moving body. ### Claim 8 A program embodied on a non-transitory computer readable medium for allowing a computer to execute: a step of detecting if an object in an image is a moving body which makes a motion between frames; and a step of performing light/shadow detection on the object by determining (a) a similarity indicating whether or not the object, detected as the moving body, is similar among a plurality of frames, and (b) a change in luminance of the object based on a texture and luminance of the object; and when determining that the object detected as moving is instead detected due to a light/shadow originated-change in luminance rather than due to moving, adding attribute information indicating the light/shadow-originated change in luminance to the object detected as the moving body. ### Claim 9 (depends on 3) The imaging apparatus according to claim 3, wherein the similarity determining section separates the object into a static area commonly included in the plurality of frames and a dynamic area which differs among the plurality of frames, and determines that the object is a light/shadow-originated change in luminance when a similarity of the static area is higher than a predetermined threshold value. ### Claim 10 (depends on 9) The imaging apparatus according to claim 9, further comprising: a meta data generating section that generates meta data containing the attribute information indicating that the object is a light/shadow-originated change in luminance, and basic information of the image based on the object to which the attribute information is added; and a transfer section that transfers the meta data generated by the meta data generating section.