Exciting! I needed this last week, and now here it is. Thanks.

I share the annoyance about phone detection previees over-promising. But I'm pleased this comes with perspective correction and lighting correction together.

Crashes on launch

macOS: macos-26_arm version installs (with intervention to permit running), but crashes on launch. ------------------------------------- Translated Report (Full Report Below) ------------------------------------- Process: perspec [94673] Path: /Users/USER//Perspec.app/Contents/Resources/perspec Identifier: perspec Version: ??? Code Type: ARM-64 (Native) Role: Unspecified Parent Process: Exited process [94672] Coalition: com.adriansieber.Perspec [86355] Responsible Process: Perspec [94671] User ID: 501

Date/Time: 2026-08-04 12:50:37.5848 -0600 Launch Time: 2026-08-04 12:50:37.5821 -0600 Hardware Model: Mac13,1 OS Version: macOS 26.6 (25G72) Release Type: User

Crash Reporter Key: 9FD40ACB-279F-0F79-41E1-8B4D3B663EA7 Incident Identifier: 207F9047-B786-4C8C-8263-BA9C4DB370EB

Time Awake Since Boot: 320000 seconds

System Integrity Protection: enabled

Triggered by Thread: 0

Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000

Termination Reason: Namespace DYLD, Code 1, Library missing Library not loaded: /opt/homebrew//libwebp.7.dylib Referenced from: <47F30FA1-4AB9-310F-8988-5CABFEF76F5E> /Users/USER//Perspec.app/Contents/Resources/perspec Reason: tried: '/opt/homebrew//libwebp.7.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/homebrew//libwebp.7.dylib' (no such file), '/opt/homebrew//libwebp.7.dylib' (no such file) (terminated at launch; ignore backtrace)

Dyld Error Message: 1

• adius

  today at 7:01 PM

  Thanks for the report. I'm looking into it!

• adius

  today at 7:19 PM

  [dead]

Be fully aware it is AGPL licensed before you try to use any of this code for something "at work" without realizing it. That said, looks neat!

Last time I used Gimp it had a plugin that let you correct perspective, wonder how they both compare

The Google Camera app already does this (much). I look into this problem during a receipt scanning project. If you want development ideas look up "metric rectification" and 'manifold dewarping'; e.g. https://openaccess.thecvf.com/content/WACV2025/papers/Hertle...

• stronglikedan

  today at 8:34 PM

  Samsung Galaxy camera as well. Just hit "scan" when it pops up and you get the same results.

  • adius

    today at 8:40 PM

    The "Initial Motivation" section in the article explains why existing mobile apps aren't good enough.

It is nagware:

> Before an image is saved, a "Buy License" banner is shown for 10 seconds.

• nerdsniper

  today at 7:32 PM

  That seems pretty reasonable! It's also AGPL licensed and the source code is available on GitHub. 20 minutes with an LLM would likely yield you a nagware-free version if you value your time at less than $21/hour. Otherwise it costs just $7 to pay Adrian for their good work!

  • OutOfHere

    today at 7:37 PM

    Why, when I could use an AI to both detect the corners and write+run a completely free ad-hoc script to fix the perspective.