image-checker

:heavy_check_mark: image-checker readme

Check the quality of an image for defects including blur, under-exposure, over-exposure and low contrast.

Can be used via node.js as a command line tool or as a library.

status - !in development!

image-checker is in ongoing development (Linux, Mac, Windows) following semantic versioning.

why?

Node.js seems to lack a library that indicates the quality of an image.

Hopefully using this library/cli, you can save some time spent on manually inspecting photos!

dependencies

• Node 8.11.3 or higher

features (in development!)

• library to give quality measurements of a given image
• also can be used as CLI (command line tool)
• gives a score for the following quality measures:
  • blurring (via edge width detection)
  • under exposure (via histogram)
  • over exposure (via histogram)
  • low contrast (via histogram)

possible future features

faces:

• face alignment (e.g. are eyes horizontal)
• Face not centered
• Face out of frame
• Faces detected, but no strong sentiment

printing:

• dpi not high enough for A4 or photo print
• check exif for presence of sRGB

usage - as cli (command line tool)

1 Install dependencies

Install:

• Yarn
• Node 8.3.11 (or higher)

2 Check images

3 ways to run

You can run image-checker in one of three ways:

• a) as a globally installed command line tool (this is the easiest way)
• OR b) as an npm package inside an npm project
• OR c) from the source code

a) install globally as a command line tool

npm i -g image-checker@latest --production

To use:

image-checker <path to image>

OR b) from the npm package

Install inside your npm project:

yarn add image-checker

via bash script:

node_modules/image-checker/dist/lib/cli.js <path to image>

OR via node:

node node_modules/image-checker/dist/lib/main <path to image>

OR c) from the source code

yarn

On Windows: use a bash shell like git bash.

To test your installation:

./test.sh

To check your images:

./go.sh <path to image>

example:

./go.sh ../myPhotos/photo-1.jpg

To see more detailed usage info:

./go.sh

usage - as a library in a node based project

Install inside your npm project:

yarn add image-checker

Then in TypeScript, you can import the library:

import * as ic from "image-checker";

// TODO xxx

For a working example, see the library test harness.

sites

site	URL
source code (github)	https://github.com/mrseanryan/image-checker
github page	https://mrseanryan.github.io/image-checker/
npm	https://www.npmjs.com/package/image-checker

developing code in this repository

see the contributing readme.

origin

This project is based on the excellent seeder project typescript-library-starter.

ORIGINAL readme (from the seeder project)

see here

authors

Original work by Sean Ryan - mr.sean.ryan(at gmail.com)

licence = MIT

This project is licensed under the MIT License - see the LICENSE file for details