https://github.com/mshr-h/color_transferring

Transfer color to grayscale image
https://github.com/mshr-h/color_transferring

colorization computer-vision image-processing transfer-color

Last synced: 12 months ago
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Transfer color to grayscale image

• Host: GitHub
• URL: https://github.com/mshr-h/color_transferring
• Owner: mshr-h
• License: mit
• Created: 2017-02-12T03:18:13.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-02-14T06:49:46.000Z (over 9 years ago)
• Last Synced: 2025-06-23T18:07:54.283Z (12 months ago)
• Topics: colorization, computer-vision, image-processing, transfer-color
• Language: C
• Size: 1.72 MB
• Stars: 5
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Transfer color to grayscale image

[![travis-ci](https://travis-ci.org/mshr-h/Color_Transferring.svg?branch=master)](https://travis-ci.org/mshr-h/Color_Transferring)

[![license](https://img.shields.io/badge/license-MIT-orange.svg)](https://github.com/mshr-h/Color_Transferring/blob/master/LICENSE)

## Description

This is an implementation of color transferring using C/C++ on Qt platform.

The algorithm is entirely [written in C](lib_c/transfer_color.c).

## What's the Colorization

Colorization is a technique to convert a grayscale image into a colored image.

- [Film colorization - Wikipedia, the free encyclopedia](https://en.wikipedia.org/wiki/Film_colorization)

- [Hand-colouring of photographs - Wikipedia, the free encyclopedia](https://en.wikipedia.org/wiki/Hand-colouring_of_photographs)

## Example

| target | reference | output |

| :----: | :-------: | :----: |

| ![](inImg_db/foliage3_0.png) | ![](inImg_db/26gouti.jpg) | ![](outImg_db/foliage_3_26gouti.png) |

| ![](inImg_db/foliage3_0.png) | ![](inImg_db/foliage_1.png) | ![](outImg_db/foliage_3_1.png) |

| ![](inImg_db/wheat.png) | ![](inImg_db/knitwork.png) | ![](outImg_db/wheat_knitwork.png) |

- Window size: 5x5 pixels

- Sampling method: regular sampling

## Requirement

- Qt 5.3 or newer (probably works on older than 5.3 but not tested)

## Directory tree

```text

include/      header files

inImg_db/     sample input images

lib_c/        C code

lib_qc/       C structure <-> C++ data conversion

outImg_db/    sample output images

```

## Reference

- [T Welsh, M Ashikhmin, K Mueller, Transferring color to greyscale images, ACM Transactions on Graphics (TOG), 2002](https://classes.soe.ucsc.edu/cmps290b/Fall05/readings/colorize-sig02.pdf)