US 2022/0036107 A1 · CALCULATION DEVICE, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM

Abstract

A calculation device includes: an image input unit that receives, as an input, an image acquired by an image acquisition device that photographs a prescribed area; a visibility evaluation unit that calculates an evaluation value showing the visibility of a detection object in the image, on the basis of the contrast of the image and noise information showing the degree of noise included in the image; a calculation unit that calculates a maximum visually recognizable distance, which is the maximum distance from the image acquisition device to the detection object at which the detection object is visually recognized in the image, based on the evaluation value, a value set as the actual size of the detection object in the image, and the image angle of the image acquisition device; and an output unit that generates and outputs output information based on the maximum visually recognizable distance.

Claims18

Dependent claims

A calculation device comprising:

a memory;
and
at least one processor coupled to the memory,
the at least one processor performing operations to:
receive, as an input, a captured image acquired by an image acquisition device that captures a predetermined area;
calculate an evaluation value representing visibility of a given object to be detected in the captured image based on a contrast of the captured image and noise information indicating a degree of noise included in the captured image;
calculate a maximum visually recognizable distance in which the given object to be detected is visually recognized in the captured image, the maximum visually recognizable distance being an upper limit of a distance from the image acquisition device to the given object to be detected, based on the evaluation value, a value set as an actual size of the given object to be detected in the captured image, and an angle of view of the image acquisition device;
and
generate output information based on the maximum visually recognizable distance, and outputting the output information.

6 more elements

An information processing method comprising:

by at least one processor,
receiving, as an input, a captured image acquired by an image acquisition device that captures a predetermined area;
calculating an evaluation value representing visibility of a given object to be detected in the captured image based on a contrast of the captured image and noise information indicating a degree of noise included in the captured image;
calculating a maximum visually recognizable distance in which the given object to be detected is visually recognized in the captured image, the maximum visually recognizable distance being an upper limit of distance from the image acquisition device to the given object to be detected, based on the evaluation value, a value set as an actual size of the given object to be detected in the captured image, and an angle of view of the image acquisition device;
and
generating output information based on the maximum visually recognizable distance, and outputting the output information.

3 more elements

A non-transitory computer-readable storage medium storing a program for causing a computer to execute:

receiving, as an input, a captured image acquired by an image acquisition device that captures a predetermined area;
visibility evaluation processing for calculating an evaluation value representing visibility of a given object to be detected in the captured image based on a contrast of the captured image and noise information indicating a degree of noise included in the captured image;
calculating a maximum visually recognizable distance in which the given object to be detected is visually recognized in the captured image, the maximum visually recognizable distance being an upper limit of distance from the image acquisition device to the given object to be detected, based on the evaluation value, a value set as an actual size of the given object to be detected in the captured image, and an angle of view of the image acquisition device;
and
generating output information based on the maximum visually recognizable distance, and outputting the output information.

2 more elements

Dependencies are inferred from the claim text.

Calculation device, information processing method, and storage medium

Life of this patent

Calculation device, information processing method, and storage medium

Life of this patent

Abstract

Claims18