Image Occlusion Editor

A focused tool for educators and learners to create image-based occlusion exercises for flashcards and self-assessment, supporting study planning.

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4,312+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Image Occlusion Editor processes input data instantly inside your browser.

Sample Input Birth date: Jan 15, 1995, Target date: Oct 20, 2023

Computed Result Chronological Age: 28 Years, 9 Months, 5 Days (10,505 days elapsed)

Execution Mode Client-Side In-Browser JS

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About This Tool

Purpose and scope: This tool enables the creation of image-based occlusion prompts for learning and assessment. Target users include educators, instructional designers, medical and biology students, and learners who use visual diagrams. The editor supports uploading an image, defining masked regions, and exporting reusable assets for flashcards or datasets. Core capacity centers on precise occlusion geometry, data portability, and workflow compatibility.
Authority and reuse: Occlusion maps and overlays can be exported as JSON for programmatic import or as PNG overlays for immediate study material integration. The system emphasizes reproducibility across devices and platforms, enabling batch processing and template-based generation for large curricula.
Security and privacy considerations: Uploaded images are processed within the session and can be exported, with optional data removal after export.

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How to Use

Upload the image to load into the editor.
Add occlusion shapes (rectangles, circles, or polygons) and position them over areas to mask.
Adjust size, opacity, and optional labels for each occluder.
Save the occlusion map and export to JSON/PNG for integration with flashcards or datasets.
Import into your study workflow or LMS and reuse across sessions.

Frequently Asked Questions

Find Quick Answers

What export formats are supported?

Exports include a structured occlusion map in JSON and optional PNG overlays. These assets can be consumed by flashcard apps, learning platforms, or data pipelines to reproduce masked prompts across devices.

Can I batch process multiple images?

Yes. The editor supports batching by defining a per-image occlusion set and exporting a bundle. This enables rapid creation of related prompts for a module or anatomy section.

How are coordinates stored and shared?

Occlusion shapes are stored as bounding boxes or polygons with pixel coordinates and optional normalization to [0,1]. This ensures consistent rendering when importing into different tools or datasets.

Need to run multiple calculations?

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