83ab4df537
Complete rewrite of Scry using TypeScript stack:
- Expo/React Native with Expo Router (file-based routing)
- Convex backend (serverless functions + real-time database)
- Adaptive camera system (expo-camera in Expo Go, Vision Camera in production)
- React Native Skia + fast-opencv for image processing
- GDPR-compliant auth setup with Zitadel OIDC (pending configuration)
Key features:
- Card recognition pipeline ported to TypeScript
- Perceptual hashing (192-bit color pHash)
- CLAHE preprocessing for lighting normalization
- Local SQLite cache with Convex sync
- Collection management with offline support
Removes all .NET/MAUI code (src/, test/, tools/).
💘 Generated with Crush
Assisted-by: Claude Opus 4.5 via Crush <crush@charm.land>
95 lines
2.2 KiB
TypeScript
95 lines
2.2 KiB
TypeScript
/**
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* Image loader utilities for React Native.
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* Loads images from file paths and returns pixel data for recognition.
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*/
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import * as ImageManipulator from "expo-image-manipulator";
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import { Platform } from "react-native";
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export interface LoadedImage {
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pixels: Uint8Array;
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width: number;
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height: number;
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}
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/**
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* Load image from a file path and return RGBA pixel data.
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* Uses expo-image-manipulator to resize the image to a manageable size first.
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*
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* Note: expo-image-manipulator doesn't directly provide pixel data.
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* We need to use a canvas (web) or Skia (native) to decode pixels.
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* For now, this provides the resized image URI for the Skia-based decoder.
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*/
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export async function loadImageForRecognition(
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uri: string,
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targetWidth: number = 480, // Reasonable size for processing
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targetHeight: number = 640
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): Promise<{ uri: string; width: number; height: number }> {
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// Normalize the URI for the platform
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const normalizedUri =
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Platform.OS === "android" && !uri.startsWith("file://")
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? `file://${uri}`
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: uri;
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// Resize the image for faster processing
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const result = await ImageManipulator.manipulateAsync(
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normalizedUri,
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[
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{
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resize: {
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width: targetWidth,
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height: targetHeight,
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},
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},
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],
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{
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compress: 1,
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format: ImageManipulator.SaveFormat.PNG,
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}
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);
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return {
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uri: result.uri,
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width: result.width,
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height: result.height,
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};
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}
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/**
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* Load image and get base64 data.
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* Useful for passing to native modules or Skia.
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*/
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export async function loadImageAsBase64(
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uri: string,
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targetWidth: number = 480,
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targetHeight: number = 640
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): Promise<{ base64: string; width: number; height: number }> {
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// Normalize the URI
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const normalizedUri =
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Platform.OS === "android" && !uri.startsWith("file://")
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? `file://${uri}`
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: uri;
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const result = await ImageManipulator.manipulateAsync(
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normalizedUri,
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[
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{
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resize: {
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width: targetWidth,
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height: targetHeight,
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},
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},
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],
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{
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compress: 1,
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format: ImageManipulator.SaveFormat.PNG,
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base64: true,
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}
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);
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return {
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base64: result.base64 || "",
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width: result.width,
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height: result.height,
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};
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}
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