# esilverberg/ios-image-filters

photoshop-style filter interface for UIImage class on iOS to make instagram-style images

Repository: https://github.com/esilverberg/ios-image-filters
Canonical: https://ross.abutalabs.com/products/ios-image-filters
Language: Objective-C
License Family: other
Archived: true
Last push: 2012-11-15T03:22:40+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5554, "days_push": 5039, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1345, forks 215 (observed 2026-08-28T04:04:27.377340+00:00)

## What it is
An Objective-C library that adds Photoshop-style image filters (levels, curves, saturation, sharpen, lomo) as a category on the UIImage class for iOS. It lets non-game developers apply Instagram-style photo effects without heavyweight imaging libraries.

## Use cases
- apply instagram-style filters to photos in an ios app
- add lomo or polaroid effects to uiimages
- adjust image levels and curves in objective-c
- sharpen or saturate photos on iphone
- simple image processing without gaming libraries

## When to choose
- you are building an older Objective-C iOS app and want quick photo filters
- you want a lightweight copy-and-paste category on UIImage instead of a full imaging framework
- you want Photoshop-like levels and curves adjustments in code

## When to avoid
- you need maintained, actively developed software (last release 2012, no license)
- you need fast performance such as GPU-accelerated or real-time filtering
- you are using Swift or modern frameworks like Core Image or Metal
- you need a clear license for commercial use

## Facets
- artifact type: library
- maturity: abandoned
- function: image-processing
- domain: image-processing, mobile-development
- platform: -
- tags: objective-c, uiimage, photo-filters, instagram-style, photoshop-style, category-on-uiimage, ios, mobile

## Member repositories
- esilverberg/ios-image-filters (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:27.377340+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:42:45.123204+00:00, confidence not recorded.
  - readme: https://github.com/esilverberg/ios-image-filters (fetched 2026-08-28T04:04:27.377340+00:00, sha 89d0a854f2a8)
- Data as of 2026-08-30T08:39:29.467469+00:00.