Image distance calculator and computer-readable, non-transitory storage medium storing image distance calculation program
US10803609B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Aug 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an image distance calculator (100), a CPU (104) extracts a frame image from moving images of an object captured by a camera, generates a slice image on the basis of a temporal change in a pixel line on a y-axis at a point x0 in the frame image, calculates a spotting point on the basis of correspondences between pixels in the slice image and pixels in the frame image, obtains pixels in the frame image corresponding to pixels in the slice image by a back-trace process, segments the frame image and slice image into regions, determines a corresponding region corresponding to a segmented region of the slice image, calculates a ratio value from an average q of the numbers of pixels in the corresponding region in the frame image and an average p of the numbers of pixels in the segmented region of the slice image, and calculates the distance z from the camera to the object for each corresponding region using a predetermined distance function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.