Mappertje

Projection mapping: correct perspective & crop a source (camera or screen) to map it onto a rectangular surface with corner pinning.

What is Mappertje?

Mappertje is a Chrome extension that allows you to correct the perspective and crop a source feed, such as a webcam or screen, to project it onto a rectangular surface using corner pinning. It is perfect for use with a beamer or projector and can be used with other extensions like Pop-out Jitsi Meet.

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Extension stats

By: jip.de.beer

View on Chrome Web Store

Users: 82 ▼ -13

Rating: 5.00 (1)

Version: 1.0.5 (Last updated: 2020-11-24)

Creation date: 2020-04-30

Risk impact: Moderate risk impact

Risk likelihood: Very low risk likelihood

Manifest version: 2

Permissions:

desktopCapture

Size: 23.90K

Email: ji*****@beconfidential.com

Ranking

# 75549 ▼ 3553

Other rankings

#6170 in Workflow & Planning ▼ 104

Other platforms

Not available on Firefox

Not available on Edge

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Extension summary

Analyze keywords

This extension is supposed to be used with a beamer/projector, preferably as a second monitor. You can aim the projector at a rectangular area, where you want your source feed to appear.

Use your webcam, your screen or any window open on your desktop as a source. You can correct the source (perspective, rotate, flip) by dragging each corner. Additionally you can crop out a rectangular area in case the source feed contains stuff you don't need.

Mappertje also integrates directly with my other extension: Pop-out Jitsi Meet: https://chrome.google.com/webstore/detail/pop-out-jitsi-meet/boklbbjieahngbnhdmlhldjjibdnnbcn When you've got both extensions installed you can also use all (remote) videos in the Jitsi conference as a source for projection mapping.

User reviews

Yes! Thank You! Will test this tonight with a full movie - projector doesn't have advanced keystone feature. Update - Been watching several streaming services with this utility! Thank you for making a seemingly niche feature a reality! Works brilliantly!