/artistassistapp

ArtistAssistApp is a web app for artists to accurately mix any color from a photo, analyze tonal values, turn a photo into an outline, draw with the grid method, paint with a limited palette, simplify a photo, remove the background from an image, compare photos pairwise, and more.

Primary LanguageTypeScriptGNU Affero General Public License v3.0AGPL-3.0

ArtistAssistApp

TypeScript React Ant Design npm

ArtistAssistApp logo

Overview

ArtistAssistApp is a Progressive Web App (PWA) for artists to accurately mix any color from a photo, analyze tonal values, turn a photo into an outline, draw with the grid method, paint with a limited palette, simplify a photo, compare photos pairwise, and more.

Try it now at ArtistAssistApp.com

Getting Started

Screenshots

Accurately mix any color from your reference photo using the paints you have

ArtistAssistApp: Color picker

ArtistAssistApp: Color picker

ArtistAssistApp: Color picker

ArtistAssistApp: Color set

Add your favorite color mixtures to the palette

ArtistAssistApp: Palette

ArtistAssistApp: Color swatch

Do a tonal value study

ArtistAssistApp: Tonal values

Reduce the detail on your reference photo

ArtistAssistApp: Simplified (None)

ArtistAssistApp: Simplified (Large)

Turn any photo into an outline and print it

ArtistAssistApp: Outline

Draw a grid over your reference photo

ArtistAssistApp: Grid (Square grid)

ArtistAssistApp: 4x4 grid

ArtistAssistApp: 3x3 grid

Play around with limited color palettes

ArtistAssistApp: Limited palette

ArtistAssistApp: Limited palette

Mix specific colors from specific brands in any proportion

ArtistAssistApp: Color mixing

ArtistAssistApp: Color mixing

ArtistAssistApp: Color mixing

ArtistAssistApp: Spectral reflectance curve

Use pairwise comparison to rank your photos

ArtistAssistApp: Compare photos pairwise

ArtistAssistApp: Compare photos pairwise

ArtistAssistApp: Compare photos pairwise (Rating)

Share your color set with others or between your devices

ArtistAssistApp: Share color set

Install ArtistAssistApp on your device

ArtistAssistApp: Install

Implementation details

ArtistAssistApp does not use artificial intelligence (AI), but rather mathematics.

The web app doesn't depend on any math or color library and includes the implementation of the following:

  • conversion between color models (e.g. sRGB to OKLCH),
  • sRGB to spectral reflectance curve,
  • subtractive color mixing using weighted geometric mean of reflectance curves,
  • matrix operations,
  • matrix inversion using LU decomposition,
  • solving a system of linear algebraic equations using forward and backward substitution,
  • the average color of the circular area of the image
  • color distance (deltaEOK),
  • vector operations,
  • median blur filter using sliding window and histogram,
  • erosion morphological filter,
  • median cut for color quantization,
  • RGB to grayscale conversion based on perceived lightness,
  • ranking images using pairwise comparison and Elo rating system,
  • and more.

The web app uses Web Workers for parallel processing and Service Workers for offline access.