# US 10,373,324 B2 · Measurement apparatus that scans original, method of controlling the same, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,324 B2 - Document ID: US10373324B2 - Status: Granted - Kind: B2 - Application number: 15/408,675 - Filed: 2017-01-18 - Published: 2017-07-27 - Granted: 2019-08-06 - Earliest claimed: 2016-01-22 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Akinori Ohi - Web page: https://patentgrep.com/patent/US10373324B2 ## CPC - G06T 7/521: from laser ranging, e.g. using interferometry; from the projection of structured light - G01B 11/24: for measuring contours or curvatures - G01B 11/25: by projecting a pattern, e.g. {one or more lines,} moiré fringes on the object (G01B11/255 takes precedence {; image analysis for depth or shape recovery G06T7/50}) - H04N 1/00267: {with a viewing or projecting apparatus, e.g. for reading image information from a film (H04N1/00262 takes precedence)} - H04N 1/00708: {Size or dimensions} - H04N 1/00726: {Other properties of the sheet, e.g. curvature or reflectivity} - H04N 1/00827: {Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects} - G06T 2207/10028: Range image; Depth image; 3D point clouds - H04N 2201/0081: Image reader (H04N2201/0091 - H04N2201/0094 take precedence) - H04N 2201/0084: Digital still camera - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A measurement apparatus that is capable of positively generating a projection pattern suitable for a to-be-read object. A camera scanner as the measurement apparatus projects a projection pattern formed by a plurality of projection lines on a to-be-read object to thereby measure the bending of the to-be-read object. A distance to the to-be-read object is measured, and distance distribution information of the to-be-read object for identifying a shape, a size, and a position of the to-be-read object is generated based on the measured distance. The projection pattern is generated based on the generated distance distribution information of the to-be-read object. ## Claims ### Claim 1 A measurement apparatus that projects a projection pattern formed by a plurality of projection lines on a to-be-read object to thereby measure bending of the to-be-read object, comprising: a distance measurement sensor configured to measure a distance to the to-be-read object; a luminance measurement unit, including a camera, configured to measure a luminance of the to-be-read object; and a processor configured to execute instructions stored in a memory to provide, at least: a luminance distribution information generating unit configured to generate luminance distribution information of the to-be-read object for identifying a pattern of the to-be-read object, based on the measured luminance; a distance distribution information-generating unit configured to generate distance distribution information of the to-be-read object for identifying a shape, a size, and a position of the to-be-read object, based on the measured distance; and a projection pattern-generating unit configured to generate the projection pattern and determine a direction of the plurality of projection lines based on the generated distance distribution information and the generated luminance distribution information of the to-be-read object. ### Claim 2 (depends on 1) The measurement apparatus according to claim 1, wherein the projection pattern-generating unit is further configured to determine a direction of the projection lines based on the distance distribution information of the to-be-read object. ### Claim 3 (depends on 1) The measurement apparatus according to claim 1, wherein the distance measurement sensor is oriented to a reading surface of the to-be-read object. ### Claim 4 (depends on 1) The measurement apparatus according to claim 1, wherein the luminance measurement unit is oriented to the reading surface of the to-be-read object. ### Claim 5 A method of controlling a measurement apparatus that projects a projection pattern formed by a plurality of projection lines on a to-be-read object to thereby measure bending of the to-be-read object, the method comprising: measuring a distance to the to-be-read object; measuring a luminance of the to-be-read object; generating luminance distribution information of the to-be-read object for identifying a pattern of the to-be-read object, based on the measured luminance; generating distance distribution information of the to-be-read object for identifying a shape, a size, and a position of the to-be-read object, based on the measured distance; and generating the projection pattern and determining a direction of the plurality of projection lines based on the generated distance distribution information and the generated luminance distribution information of the to-be-read object. ### Claim 6 A non-transitory computer-readable storage medium storing a computer-executable program for executing a method of controlling a measurement apparatus that projects a projection pattern formed by a plurality of projection lines on a to-be-read object to thereby measure bending of the to-be-read object, wherein the method comprises: measuring a distance to the to-be-read object; measuring a luminance of the to-be-read object; generating luminance distribution information of the to-be-read object for identifying a pattern of the to-be-read object, based on the measured luminance; generating distance distribution information of the to-be-read object for identifying a shape, a size, and a position of the to-be-read object, based on the measured distance; and generating the projection pattern and determining a direction of the plurality of projection lines based on the generated distance distribution information and the generated luminance distribution information of the to-be-read object. ### Claim 7 (depends on 1) The measurement apparatus according to claim 1, wherein the projection pattern-generating unit is further configured to generate the projection pattern by determining the position of each projection line of the plurality of projection lines and space intervals of the plurality of projection lines based on the generated distance distribution information of the to-be-read object.