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1. #Camera lens distortion grid card install
2. #Camera lens distortion grid card full size
3. #Camera lens distortion grid card download

I'll also add a note about using different lens types, for those who choose that route, which I agree is great too! with higher resolution images), so would you mind mentioning what type yours was? I don't know that all computers do this equally (esp. It uses the web browser's WebGL system which uses your computer's graphics card to do the distortion. I’ve not been flying them lately, but I prefer using the non-fish eye lens configurations as discussed in this and prior notes:

#Camera lens distortion grid card full size

Issue: Full size images (Pixel Height: 3,288 Pixel Width: 4,384) gave black screen, sized to 640m processed okay, didn’t check in betweenĭidn’t try tinkering with sliders to tailor for the DJI camera, just exercised the tool I tried two photos from a Peter Swigert DJI flight in my front yard back in 3-12-15, and shared results in this note:

I’ve used some of the other tools like Gimp, PTLens, and some time ago we communicated about it. I saw Jeff Warren’s note, so gave it a try.

#Camera lens distortion grid card download

Download the corrected version and upload it here alongside the original.Upload the image and try correcting it using FisheyeGL:.Uploading the original photo in full (in the comments below).Taking a picture of some kind of grid - a chessboard, a tile floor or brick wall.If you have a camera not on the presets list, please help out by: This got cut off at the first few seconds of audio, but is not a bad walkthrough of the process: Here's the link to the online tool please leave comments/suggestions below here, and help one another use and refine this technique! Please help submit more presets for different cameras! Get started GoPro alternatives: (many are almost identical).The settings for a given camera and lens stay the same, so we've collected some for common cameras used at Public Lab here: But be careful sometimes large images can make the page crash, so save your images periodically so you don't lose them! Presets So you can drag a set of these onto the page one by one, and download them later. If you drag a different image onto the canvas, it'll save the previous one (distorted) below for download. Then you can use the URL of the page (it'll change as you tweak the sliders) to open to that exact setting again. Sliders are provided, and while each has a meaning in the formula used to correct the distortion, the easiest way to find the right settings is to take a picture of a grid (a checkerboard or graph paper, or a tiled wall) and play with the sliders until the lines are straight. The distortion varies for different lenses. Note that the corners of the image are cropped out when you do this, however! This is especially useful for making maps in MapKnitter, because distorted images make it extremely difficult to stitch images together into a map - it's like trying to flatten a bunch of orange peels into a flat surface (or something). With a real image, the effect is as shown below, again left/before, right/after. This work was made possible in part by by NASA through the AREN project.

FisheyeGL can (like other #lens-distortion techniques) remove this, resulting in a "flatter" image, like the one to the right, below.

#Camera lens distortion grid card install

Note that another way to do this is to install a different lens on your camera if that's possible (see #lens-swapping).įor example, the left image below has a characteristic "bulge" from a wide-angle lens. FisheyeGL is a new online tool for removing lens distortion ("fisheye" effect or "barrel distortion") from images, especially those taken with a #GoPro or Mobius Action Cam (Public Lab's Infragram Point & Shoot).