# US 2021/0243416 A1 · Projection adjustment program and projection adjustment method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243416 A1 - Document ID: US20210243416A1 - Status: Published application - Kind: A1 - Application number: 17/055,763 - Filed: 2019-05-15 - Published: 2021-08-05 - Earliest claimed: 2018-05-17 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Ryuji FUCHIKAMI; Ken MASHITANI - Web page: https://patentgrep.com/patent/US20210243416A1 ## CPC - H04N 9/3194: {including sensor feedback} - G01B 11/245: using a plurality of fixed, simultaneously operating transducers ({G01B11/2408 - G01B11/2425, } G01B11/255 take precedence) - G01B 11/2527: {with phase change by in-plane movement of the patern} - G03B 21/00: Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) - G03B 21/14: Details - G06T 7/521: from laser ranging, e.g. using interferometry; from the projection of structured light - G06T 7/73: using feature-based methods - G06T 11/23: using straight lines or curves - G09G 5/00: Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) - G09G 5/08: Cursor circuits - H04N 9/3147: {Multi-projection systems (video walls G06F3/1446)} - H04N 9/3185: {Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - G06T 2207/10028: Range image; Depth image; 3D point clouds - G06T 2207/10048: Infrared image - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - 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) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A non-transitory computer-readable storage medium stores a projection adjustment program which, when executed by a processor, causes a computer to execute a process relating to adjustment of projection operations of projection devices configured to perform position measurement and projection on a target object in a projection system including the projection devices. The process includes: causing a first projection device to project invisible measurement light onto the target object; causing a second projection device to receive reflection light reflected from the target object; judging a connection relationship of a projection range of the first projection device on the basis of the received reflection light; executing a process of the judging of the connection relationship on all processing target projection devices; and generating projection position information indicating a connection relationship between projection ranges of the respective projection devices and displaying the projection position information on a display unit. ## Claims ### Claim 1 A non-transitory computer-readable storage medium that stores a projection adjustment program, the projection adjustment program, when executed by a processor, causing a computer to execute a process relating to adjustment of projection operations of a plurality of projection devices configured to perform position measurement and projection on a target object in a projection system comprising the plurality of projection devices, the process comprising: causing a first projection device of the projection system to project invisible measurement light onto the target object; causing a second projection device of the projection system to receive reflection light of the measurement light, the reflection light being reflected from the target object; judging a connection relationship of a projection range of the first projection device on the basis of the received reflection light of the measurement light; executing a process of the judging of the connection relationship on all processing target projection devices; and generating projection position information indicating a connection relationship between projection ranges of the respective projection devices of the projection system and displaying the projection position information on a display unit. ### Claim 2 (depends on 1) The non-transitory computer-readable storage medium according to claim 1, wherein an image display representing the projection ranges of the projection devices is generated as a display of the projection position information. ### Claim 3 (depends on 1) Then non-transitory computer-readable storage medium according to claim 1, wherein a graphical display is generated as a display of the projection position information, the graphical display comprising nodes indicating positions of the projection ranges of the projection devices, respectively, and connection lines indicating a connection relationship between the nodes that reflects overlaps between the projection ranges. ### Claim 4 (depends on 2) The non-transitory computer-readable storage medium according to claim 2, wherein if the projection ranges of the plurality of projection devices have an overlap, the overlap is displayed in an emphasized manner. ### Claim 5 (depends on 3) The non-transitory computer-readable storage medium according to claim 3, wherein if the projection ranges of the plurality of projection devices have an overlap, an overlap node indicating an overlapping state of the projection ranges is displayed at the overlap. ### Claim 6 (depends on 1) The non-transitory computer-readable storage medium according to claim 1, wherein the process further comprises: calculating distances between the projection ranges of the respective projection devices on the basis of the projection position information indicating the connection relationship between the projection ranges; and setting, as a start point projection device, a projection device having a shortest distance to other projection devices. ### Claim 7 (depends on 6) The non-transitory computer-readable storage medium according to claim 6, wherein projection timings are assigned to the measuring projection devices in order recursively starting from the start point projection device, each projection timing being assigned to measuring projection devices whose projection ranges do not overlap with each other. ### Claim 8 A projection adjustment method of a projection adjustment device configured to execute a process relating to adjustment of projection operations of the plurality of projection devices configured to perform position measurement and projection on a target object in a projection system comprising the plurality of projection devices, the projection adjustment method comprising: causing a first projection device of the projection system to project invisible measurement light onto the target object; causing a second projection device of the projection system to receive reflection light, reflected from the target object, of the measurement light; judging a connection relationship of a projection range of the first projection device on the basis of the received reflection light of the measurement light; executing the connection relationship judging step on all processing target projection devices; and generating projection position information indicating a connection relationship between the projection ranges of the respective projection devices of the projection system and displaying the generated projection position information on a display unit.