Image processing apparatus, image forming apparatus and program
US10388021B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Oct 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes a hardware processor that: divides each of pixels of image data in units of blocks, and compresses the image data using a maximum value and a minimum value of a pixel value in each of the divided blocks; extracts a maximum value and a minimum value of each of the blocks from the compressed image data; detects an edge of an object on the basis of at least one of the extracted maximum value and the minimum value of each of the blocks; performs edge correction of the compressed image data by increasing or decreasing the maximum value and the minimum value of each of the blocks within a correction range from the detected edge; and decompresses the image data that have undergone edge correction, using the maximum value and the minimum value of each of the blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.