Image processing device, image processing method, and program

JP7877071B2Active Publication Date: 2026-06-22CANON KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
CANON KK
Filing Date
2022-06-06
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Existing methods for evaluating the surface state of an object, such as orange peel texture, are inadequate when the shooting distance changes, leading to inconsistent evaluation results.

Method used

An image processing apparatus that includes a profile acquisition unit, distance calculation unit, correction unit, and evaluation value calculation unit, which corrects the optical profile based on distance information to maintain consistent evaluation even with changing shooting distances.

Benefits of technology

Enables accurate evaluation of the surface state, specifically the degree of orange peel texture, by correcting the optical profile using distance information, ensuring reliable assessment regardless of shooting distance variations.

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Abstract

To evaluate surface condition of an object to be evaluated even when a photographing distance changes.SOLUTION: An image processing device obtains an optical profile representing an attribute of an image reflected on a surface of an object to be evaluated from an image obtained by imaging the object. The image processing device obtains distance information having a correlation with an imaging distance between an imaging device imaging the object and the object from an image obtained by imaging the object, corrects the optical profile on the basis of the distance information, and obtains an evaluation value representing surface condition of the object on the basis of the corrected optical profile.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • CN107850422A

  • JP2008298549A

  • JP2011080865A

  • JP2013255656A

  • JP2017173300A