Align two images and spot differences instantly — built for quality control and inspection work, not photo editing. Review every difference, leave comments, and export a report your team can act on. Save comparisons as projects, back them up, and share them between devices.
Spotter Eye isn't one algorithm forced onto every job — it's two purpose-built modes.
Point Spotter Eye at a sample photo and it locates your reference object inside it first — say, a logo buried in a photo of a product label — then compares just that region against your master. Feature matching (ORB/SIFT) and homography alignment handle the search, even when the object is rotated, tilted, or shot at an angle.
Built for the golden-copy problem: compare a photographed or rescanned document against the original digital file. RANSAC/LMEDS alignment squares up the two versions, then SSIM-based difference detection flags every pixel-level change between them.
Detecting a difference is the easy part. Spotter Eye is built for what comes after.
Object Match for locating and comparing a known object in a photo, Document Compare for aligning two versions of the same document — pick the mode that fits the job.
Every flagged difference can be reviewed and annotated with a comment — turning a raw diff into a documented decision, not just a pile of red boxes.
Compile your reviewed comparison — differences, comments, and all — into a PDF report you can hand to a client, a QA lead, or a compliance file.
Blink between master and sample, drag a before/after slider, inspect the raw feature matches, or view a highlighted-box overlay with adjustable sensitivity — plus a full difference heatmap and a distraction-free full-screen mode.
Save every comparison as a project, tag it OK / Attention / Issue as you work through review, and back up your whole library or share a single project file with a teammate.
A master password derives the key that encrypts your local database and every project file — the same zero-knowledge discipline as the rest of the Arc Canyon vault suite.
Four steps from "two images" to "a documented, reviewed result."
Load a master and a sample. Import from your camera roll or files — no re-saving or converting required first.
Pick Object Match or Document Compare. Object Match locates and compares a reference object inside a photo; Document Compare aligns two full documents and flags pixel-level changes between them.
Spotter Eye aligns and detects automatically. Feature matching and homography estimation (ORB/SIFT for objects, RANSAC/LMEDS for documents) line the two images up, then SSIM-based difference detection flags what changed.
Review, comment, and export. Step through results in Blink, Slider, or Boxes view, leave a comment on anything that needs a second look, then export a PDF report — or save the whole thing as a project for later.