OPENTECHNICAL PUBLICATION
OT-2026-000003046

Image processing method and robot system

Published: 2026-09-15T19:16:57.824528Z
Permanent URL: https://opentechnical.org/p/OT-2026-000003046
Categories: Robotics & Automation > Robot Architectures

------------------------------------------------------------------------

ABSTRACT

In an image processing method, an image obtained by capturing an image of a
workpiece placed on a loading surface from a predetermined height with a
two-dimensional camera is processed to recognize a position of the workpiece
as a coordinate value in units of pixels, and the coordinate value in units of
pixels is converted into a coordinate value in units of lengths using a
resolution serving as an amount of change in length per unit pixel of the
image. In the method, a first relationship that is a relationship between a
unit resolution serving as an amount of change in resolution per unit height
and a working distance serving as a distance between a target object and a
lens of the two-dimensional camera is acquired. Next, a resolution of the
image of the two-dimensional camera with respect to the loading surface of the
workpiece at an installation height of the two-dimensional camera is measured
when the two-dimensional camera is installed to estimate a working distance
for measurement, and the unit resolution is estimated based on the estimated
working distance and the first relationship. A height of the workpiece is
acquired, and the resolution of the image is corrected based on the acquired
height of the workpiece and the estimated unit resolution.

------------------------------------------------------------------------

OpenTechnical publication OT-2026-000003046
Published 2026-09-15T19:16:57.824528Z
https://opentechnical.org/p/OT-2026-000003046