Mappertje
Projection mapping: correct perspective & crop a source (camera or screen) to map it onto a rectangular surface with corner pinning.
What is Mappertje?
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Summary
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.
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Safety
Risk impact
Mappertje may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.
Risk likelihood
Mappertje has earned a good reputation and can be trusted.
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