# US 2019/0244389 A1 · Information processing apparatus, system, method for controlling information processing apparatus, and non-transitory computer readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0244389 A1 - Document ID: US20190244389A1 - Status: Published application - Kind: A1 - Application number: 16/262,298 - Filed: 2019-01-30 - Published: 2019-08-08 - Earliest claimed: 2018-02-05 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Minoru Kusakabe - Web page: https://patentgrep.com/patent/US20190244389A1 ## CPC - G06T 7/74: {involving reference images or patches} - G06T 2207/10016: Video; Image sequence - G06T 2207/10024: Color image - G06T 2207/30196: Human being; Person - G06T 2207/30201: Face - G06T 2207/30242: Counting objects in image - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract An information processing apparatus comprising, a first determination unit configured to determine whether a subject corresponding to a person is included in an input image, and a second determination unit configured to associate a first region corresponding to a first subject determined to be included in the input image by the first determination unit with a second region determined to include the first subject in one or more images input earlier than the input image, and to determine whether the first subject is to be included in a person detection result on the basis of a degree of a temporal change of feature amounts obtained from the first region and the second region, respectively. ## Claims ### Claim 1 An information processing apparatus comprising: a first determination unit configured to determine whether a subject corresponding to a person is included in an input image; and a second determination unit configured to associate a first region corresponding to a first subject determined to be included in the input image by the first determination unit with a second region determined to include the first subject in one or more images input earlier than the input image, and to determine whether the first subject is to be included in a person detection result on the basis of a degree of a temporal change of feature amounts obtained from the first region and the second region, respectively. ### Claim 2 (depends on 1) The information processing apparatus according to claim 1, further comprising an output unit that, in accordance with a determination by the second determination unit that the first subject is to be included in a detection result, is configured to output information on a detection result that includes the person corresponding to the first subject. ### Claim 3 (depends on 1) The information processing apparatus according to claim 1, wherein the second determination unit is configured to determine that the first subject is to be included in the person detection result when the degree of temporal change of the feature amount is a threshold value or greater; and determine that the first subject is not to be included in the person detection result when the degree of temporal change of the feature amount is less than the threshold value. ### Claim 4 (depends on 3) The information processing apparatus according to claim 3, wherein the threshold value is defined for each region set in the input image. ### Claim 5 (depends on 4) The information processing apparatus according to claim 4, wherein a threshold value set for a region that, among the regions set in the input image, most likely includes a subject being resident that is not to be included in the person detection result is defined as a value greater than a threshold value set for a region that less likely includes a subject being resident that is not to be included in the person detection result. ### Claim 6 (depends on 4) The information processing apparatus according to claim 4, wherein a threshold value set for a region that, among the regions set in the input image, most likely includes a subject that is captured after stopping movement and is to be included in the person detection result is defined as a value less than a threshold value set for a region that less likely includes a subject captured after stopping movement. ### Claim 7 (depends on 1) The information processing apparatus according to claim 1, wherein the second determination unit is further configured to determine that the first subject is not to be included in the person detection result when a feature amount having a predetermined value is obtained a predetermined number of times or more across a plurality of images having the first region or the second region associated with each other. ### Claim 8 (depends on 7) The information processing apparatus according to claim 7, wherein the feature amount having the predetermined value is a feature amount obtained at a frequency of a predetermined number of times or more in the plurality of images, or is a feature amount having a maximum value among the feature amounts obtained in the plurality of images. ### Claim 9 (depends on 1) The information processing apparatus according to claim 1, wherein the second determination unit is further configured to determine that the first subject is not to be included in the person detection result when fluctuation exceeding a predetermined level occurs in a degree of temporal change between a plurality of images having the first region or the second region associated with each other. ### Claim 10 (depends on 1) The information processing apparatus according to claim 1, wherein the second determination unit is, further on the basis of whether a position of the first region or the second region in a corresponding image among a plurality of images having the first region or the second region associated with each other is within a predetermined range, further configured to; determine that the first subject is to be included in the person detection result when the position is not within the predetermined range, and determine that the first subject is not to be included in the person detection result when the position is within the predetermined range. ### Claim 11 (depends on 1) The information processing apparatus according to claim 1, wherein the feature amounts include a concordance rate based on a comparison between a template prepared in advance and the first region, and a concordance rate based on a comparison between the template and the second region. ### Claim 12 (depends on 11) The information processing apparatus according to claim 11, wherein the first region and the second region are regions including a person's face, the template corresponds to a predetermined orientation of the person's face, and the concordance rates change in accordance with orientations of the face included in the first region and the second region. ### Claim 13 (depends on 1) The information processing apparatus according to claim 1, wherein the first region and the second region are regions including a person's face, head, or body. ### Claim 14 (depends on 1) The information processing apparatus according to claim 1, wherein the input image is input from an image capturing device, and the first determination unit is configured to make the determination in response to receiving information on the first region corresponding to the first subject extracted from the input image by the image capturing device. ### Claim 15 A system comprising: an information processing apparatus including; a first determination unit configured to determine whether a subject corresponding to a person is included in an input image, and a second determination unit configured to associate a first region corresponding to a first subject determined to be included in the input image by the first determination unit with a second region determined to include the first subject in one or more images input earlier than the input image, and to determine whether the first subject is to be included in a person detection result on the basis of a degree of a temporal change in feature amounts obtained from the first region and the second region, respectively; an image capturing device configured to capture a predetermined space, generate an image, and input the image to the information processing apparatus; and a display unit configured to receive and display information output by an output unit of the information processing apparatus. ### Claim 16 A method for controlling an information processing apparatus comprising the steps of: determining whether a subject corresponding to a person is included in an input image; and associating a first region corresponding to a first subject determined to be included in the input image with a second region determined to include the first subject in one or more images input earlier than the input image, and determining whether the first subject is to be included in a person detection result on the basis of a degree of a temporal change in feature amounts obtained from the first region and the second region, respectively. ### Claim 17 A non-transitory computer-readable storage medium storing a program including instructions that, when executed by a processor of an information processing apparatus, causes a processor to perform: determining whether a subject corresponding to a person is included in an input image; and associating a first region corresponding to a first subject determined to be included in the input image with a second region determined to include the first subject in one or more images input earlier than the input image, and determining whether the first subject is to be included in a person detection result on the basis of a degree of a temporal change in feature amounts obtained from the first region and the second region, respectively.