# Vision Framework

Implement computer vision features including text recognition (OCR), face detection...

- Repository: https://github.com/dpearson2699/swift-ios-skills (1266 stars)
- Category: Data and ML
- License: see repository
- Last updated: 2026-07-31
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add dpearson2699/swift-ios-skills --skill vision-framework -g -a claude-code -y`
Codex: `npx skills add dpearson2699/swift-ios-skills --skill vision-framework -g -a codex -y`
Cursor: `npx skills add dpearson2699/swift-ios-skills --skill vision-framework -g -a cursor -y`
Gemini CLI: `npx skills add dpearson2699/swift-ios-skills --skill vision-framework -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add dpearson2699/swift-ios-skills`

## Description

Implement computer vision features including text recognition (OCR), face detection, barcode scanning, image segmentation, object tracking, and document scanning in iOS apps. Covers both the modern Swift-native Vision API (iOS 18+) and legacy VNRequest patterns, VisionKit DataScannerViewController for live camera scanning, and CoreMLRequest/VNCoreMLRequest for custom model inference. Use when adding OCR, barcode scanning, face detection, or custom Core ML model inference with Vision.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Vision Framework

Detect text, faces, barcodes, objects, and body poses in images and video using
on-device computer vision. Prefer the modern iOS 18+ request APIs and load the legacy reference only when the deployment target requires it.

See [references/vision-requests.md](references/vision-requests.md) for complete code patterns and
[references/visionkit-scanner.md](references/visionkit-scanner.md) for DataScannerViewController integration.

## Contents

- [Two API Generations](#two-api-generations)
- [Request Pattern (Modern API)](#request-pattern-modern-api)
- [Text Recognition (OCR)](#text-recognition-ocr)
- [Face Detection](#face-detection)
- [Barcode Detection](#barcode-detection)
- [Document Scanning (iOS 26+)](#document-scanning-ios-26)
- [Image Segmentation](#image-segmentation)
- [Object Tracking](#object-tracking)
- [Other Request Types](#other-request-types)
- [Core ML Integration](#core-ml-integration)
- [VisionKit: DataScannerViewController](#visionkit-datascannerviewcontroller)
- [Common Mistakes](#common-mistakes)
- [Review Checklist](#review-checklist)
- [References](#references)

## Two API Generations

Vision has two distinct API layers. Prefer the modern API for new code:
Swift-native request types plus `try await request.perform(on:)`. Keep `VN*`,
`VNImageRequestHandler`, `VNSequenceRequestHandler`, completion handlers, and
legacy `CGRect` helpers inside explicit legacy fallback sections or files.

The rest: https://github.com/dpearson2699/swift-ios-skills/blob/HEAD/skills/vision-framework/SKILL.md