# US 2017/0257561 A1 · Shooting Method and Shooting Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0257561 A1 - Document ID: US20170257561A1 - Status: Published application - Kind: A1 - Application number: 15/506,306 - Filed: 2015-07-21 - Published: 2017-09-07 - Earliest claimed: 2014-08-28 - Assignees: Nubia Technology Co., Ltd. - Applicants: Nubia Technology Co., Ltd. - Inventors: Qiang Wei; Xiaohui Cui; Lei Miao; Qiang Li; Qian Hai - Web page: https://patentgrep.com/patent/US20170257561A1 ## CPC - H04N 23/64: {Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image} - G03B 15/05: Combinations of cameras with electronic flash apparatus; Electronic flash units - H04N 5/2621: {Cameras specially adapted for the electronic generation of special effects during image pickup, e.g. digital cameras, camcorders, video cameras having integrated special effects capability} - H04N 5/272: Means for inserting a foreground image in a background image, i.e. inlay, outlay - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - H04N 23/62: Control of parameters via user interfaces - H04N 23/632: {for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters} - H04N 23/667: Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes - H04N 23/68: for stable pick-up of the scene, e.g. compensating for camera body vibrations - H04N 23/69: Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract A shooting method and a shooting device are disclosed. In general, the shooting method includes the following steps: continuously capturing images; reading a captured image of the captured images and searching in the current read image according to a predetermined criteria to identify a Light Painting region of the current read image; and extracting the Light Painting region and merging the Light-Painting region and a corresponding position of a base image to achieve a synthesized image, and using the synthesized image as a base image for next image synthesis. Since only the Light Painting region is merged and synthesized, and other light spot regions in the image would not appear in the synthesized image, and it would not contaminate the synthesized image, a clear Light Painting trajectory can be recorded in the finally synthesized image. ## Claims ### Claim 1 A shooting method, comprising: continuously, capturing a sequence of images; obtaining a current captured image and determining a Light Painting region based on a predetermined criteria of the current captured image; and extracting the Light Painting region from the current captured image, merging the Light Painting region and a corresponding position of a base image to generate a synthesized image, and using the synthesized image as a base image for next image synthesis; wherein, if the current captured image is the first captured image, the current captured image is used as a base image. ### Claim 2 (depends on 1) The shooting method according to claim 1, wherein the step of determining a Light Painting region based on a predetermined criteria of the current captured image comprises: searching for an assistant object based on a predetermined assistant object criteria in the current captured image; and identifying a light spot region at a light-emitting position of the assistant object as the Light Painting region. ### Claim 3 (depends on 2) The shooting method according to claim 2, wherein the step of determining a light spot region at a light-emitting position of the assistant object as the Light Painting region comprises: comparing brightness value of a region close to the light-emitting position with brightness value of the base image, and if a difference value between the brightness value of the region close to the light-emitting position and the brightness value of the base image is greater than a predetermined threshold value, determining the region close to the light-emitting position as the “light spot region” and determining the region as the Light Painting region. ### Claim 4 (depends on 1) The shooting method according to claim 1, wherein the step of determining a Light Painting region based on a predetermined criteria of the current captured image comprises: when the current captured image is the first captured image, determining the Light Painting region of the current captured image based on a predetermined criteria of a Light Painting light spot and a predetermined position of a Light Painting region or a user-specified position of a Light Painting region; and if the current captured image is not the first captured image, determining the Light Painting region of the current captured image according to the predetermined criteria of the Light Painting light spot and a stored position of a previous Light Painting region. ### Claim 5 (depends on 4) The shooting method according to claim 4, wherein the step of determining the Light Painting region of the current captured image according to a predetermined criteria of a Light Painting light spot and a predetermined position of a Light Painting region or a user-specified position of a Light Painting region comprises: searching, in the current captured image, for all Light Painting light spots matching with the predetermined criteria of the Light Painting light spot within a predetermined range of a position corresponding to the predetermined position of the Light Painting region or the user-specified position of the Light Painting region, and determining a region where the all Light Painting light spots are located as the Light Painting region. ### Claim 6 (depends on 4) The shooting method according to claim 4, wherein the step of determining the Light Painting region of the current captured image according to the predetermined criteria of the Light Painting light spot and a stored position of a previous Light Painting region comprises: searching, in the current captured image, for all Light Painting light spots matching with the predetermined criteria of the Light Painting light spot within a predetermined range of a position corresponding to the position of the previous Light Painting region, and determining a region where the all Light Painting light spots are located as the Light Painting region. ### Claim 7 A shooting device, comprising a processor and a memory, wherein the memory stores processor-executable programs, and the programs comprise an image acquisition module, an image synthesis module and a base image determination module, wherein: the image acquisition module is arranged to continuously capture a sequence of images; the image synthesis module is arranged to: obtain a current captured image and determine a Light Painting region based on a predetermined criteria of the current captured image; and extract the Light Painting region in the current captured image and merge the Light Painting region and a corresponding position of a base image to generate a synthesized image; and the base image determination module is arranged to: if the current captured image is a first captured image, determine the current captured image as a base image; and if the current captured image is not the first captured image, use a previous synthesized image generated by the image synthesis module as a base image for next image synthesis. ### Claim 8 (depends on 7) The shooting device according to claim 7, wherein the image synthesis module is arranged to determine a Light Painting region based on a predetermined criteria of the current captured image in a way as follows: searching for an assistant object matching with the predetermined criteria of the assistant object in the current captured image; and identifying a light spot region at a light-emitting position of the assistant object as the Light Painting region. ### Claim 9 (depends on 8) The shooting device according to claim 8, wherein the image synthesis module is arranged to determine the light spot region at the light-emitting position of the assistant object as the Light Painting region in a way as follows: comparing brightness value of a region close to the light-emitting position with brightness value of the base image, and if a difference value between the brightness value of the region close to the light-emitting position and the brightness value of the base image is greater than a predetermined threshold value, determining the region close to the light-emitting position as the “light spot region” and determining the region as the Light Painting region. ### Claim 10 (depends on 7) The shooting device according to claim 7, wherein the image synthesis module is arranged to determine a Light Painting region based on a predetermined criteria of the current captured image in a way as follows: if the current captured image is the first captured image, determining the Light Painting region of the current captured image according to a predetermined criteria of a Light Painting light spot and a predetermined position of a Light Painting region or a user-specified position of a Light Painting region; and if the current captured image is not the first captured image, determining the Light Painting region of the current captured image according to the predetermined criteria of the Light Painting light spot and a predetermined position of a previous Light Painting region. ### Claim 11 (depends on 10) The shooting device according to claim 10, wherein the image synthesis module is arranged to determine the Light Painting region of the current captured image according to the predetermined criteria of the Light Painting light spot and the predetermined position of the Light Painting region or the user-specified position of the Light Painting region in a way as follows: searching, in the current captured image, for all Light Painting light spots matching with the predetermined criteria of the Light Painting light spot within a predetermined range of a position corresponding to the predetermined position of the Light Painting region or the user-specified position of the Light Painting region, and determining a region where the all Light Painting light spots are located as the Light Painting region. ### Claim 12 (depends on 10) The shooting device according to claim 10, wherein the image synthesis module is arranged to determining the Light Painting region of the current captured image according to the predetermined criteria of the Light Painting light spot and the stored position of the previous Light Painting region in a way as follows: searching, in the current captured image, for all Light Painting light spots matching with the predetermined criteria of the Light Painting light spot within a predetermined range of a position corresponding to the position of the previous Light Painting region, and determining a region where the all Light Painting light spots are located as the Light Painting region. ### Claim 13 (depends on 1) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 1. ### Claim 14 (depends on 13) A carrier carrying the computer program according to claim 13. ### Claim 15 (depends on 2) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 2. ### Claim 16 (depends on 3) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 3. ### Claim 17 (depends on 4) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 4. ### Claim 18 (depends on 5) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 5. ### Claim 19 (depends on 6) A computer program comprising a program instruction, the program instruction, when being executed by a computer, enabling the computer to execute the shooting method according to claim 6.