# US 2020/0404153 A1 · Image processing apparatus, imaging apparatus, image processing method, and non-transitory computer readable medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0404153 A1 - Document ID: US20200404153A1 - Status: Published application - Kind: A1 - Application number: 16/906,945 - Filed: 2020-06-19 - Published: 2020-12-24 - Earliest claimed: 2019-06-21 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Tatsuya Nishiguchi - Web page: https://patentgrep.com/patent/US20200404153A1 ## CPC - G06T 3/40: Scaling of whole images or parts thereof, e.g. expanding or contracting - H04N 23/741: by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors - G06T 5/40: using histogram techniques - H04N 5/772: {the recording apparatus and the television camera being placed in the same enclosure} - H04N 9/8227: {the additional signal being at least another television signal} - H04N 23/83: specially adapted for colour signals - H04N 23/88: for colour balance, e.g. white-balance circuits or colour temperature control - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An image processing apparatus comprising at least one memory and at least one processor which function as: an acquisition unit configured to acquire a moving image; and a generation unit configured to generate a thumbnail image from the moving image, wherein in a case where the moving image is a high dynamic range (HDR) moving image, the generation unit generates the thumbnail image of which gamma is equal to a gamma of the moving image and bit depth is lower than a bit depth of the moving image. ## Claims ### Claim 1 An image processing apparatus comprising at least one memory and at least one processor which function as: an acquisition unit configured to acquire a moving image; and a generation unit configured to generate a thumbnail image from the moving image, wherein in a case where the moving image is a high dynamic range (HDR) moving image, the generation unit generates the thumbnail image of which gamma is equal to a gamma of the moving image and bit depth is lower than a bit depth of the moving image. ### Claim 2 (depends on 1) The image processing apparatus according to claim 1, wherein the generation unit is further configured to generate the thumbnail image by converting the bit depth of the moving image without converting the gamma of the moving image in a case where the moving image is a high dynamic range (HDR) moving image. ### Claim 3 (depends on 1) The image processing apparatus according to claim 1, wherein the bit depth of the thumbnail image is equal to the bit depth of a standard dynamic range (SDR) moving image. ### Claim 4 (depends on 1) The image processing apparatus according to claim 1, wherein the gamma of the moving image is a transfer function of a perceptual quantization (PQ) method. ### Claim 5 (depends on 1) The image processing apparatus according to claim 1, wherein the at least one memory and the at least one processor further function as an output unit configured to output an output image, the output unit is further configured to output the output image generated by converting a bit depth of the thumbnail image into the bit depth of the moving image in a case where the moving image is an HDR moving image. ### Claim 6 (depends on 1) The image processing apparatus according to claim 1, wherein the generation unit is further configured to generate the thumbnail image by converting the bit depth of the moving image without converting the gamma and a color gamut of the moving image in a case where the moving image is an HDR moving image. ### Claim 7 (depends on 1) The image processing apparatus according to claim 1, wherein the generation unit is further configured to generate the thumbnail image without converting the bit depth of the moving image in a case where the moving image is a standard dynamic range (SDR) moving image. ### Claim 8 (depends on 7) The image processing apparatus according to claim 7, wherein the generation unit is further configured to generate the thumbnail image without converting the gamma and the bit depth of the moving image in the case where the moving image is an SDR moving image. ### Claim 9 (depends on 1) The image processing apparatus according to claim 1, wherein the generation unit is further configured to generate the thumbnail image by converting a color gamut of the moving image in a case where the moving image is a standard dynamic range (SDR) moving image. ### Claim 10 (depends on 1) The image processing apparatus according to claim 1, wherein the generation unit is further configured to generate the thumbnail image from a frame image included in the moving image. ### Claim 11 (depends on 1) An imaging apparatus, comprising: the image processing apparatus according to claim 1; and an image capturing apparatus that captures the moving image. ### Claim 12 An image processing method, comprising: an acquisition step of acquiring a moving image; a generation step of generating a thumbnail image from the moving image, wherein in a case where the moving image is a high dynamic range (HDR) moving image, the thumbnail image of which gamma is equal to a gamma of the moving image and bit depth is lower than a bit depth of the moving image is generated in the generation step. ### Claim 13 A non-transitory computer readable medium that stores a program, wherein the program causes a computer to execute an image processing method, and the image processing method includes: an acquisition step of acquiring a moving image; and a generation step of generating a thumbnail image from the moving image, wherein in a case where the moving image is a high dynamic range (HDR) moving image, the thumbnail image of which gamma is equal to a gamma of the moving image and bit depth is lower than a bit depth of the moving image is generated in the generation step.