You Can Extract 3D Data from a Photo Taken on a Camera With No Lens
Jon Bumstead, AKA “okooptics,” does really fascinating work with unintuitive optics and imaging. He tends to focus on reconstructed imagery captured with non-standard cameras and sensors, such as taking a 2D image using a “single pixel” camera. Most recently, he managed to generate 3D data using a camera without a lens.
If you were to remove the lens from your interchangeable lens digital camera (a DSLR or mirrorless, it doesn’t matter) and snap a photo, the resulting image would be almost complete garbage. At best, you’ll see some vague and very blurry shapes if they’re large enough and have enough variation in contrast or color.
But six months ago, Bumstead demonstrated how a piece of transparent tape over the sensor could, counterintuitively, diffuse the incoming light and make it more focused. With some magical math (kind of an inverse Fourier transform for “deconvolution”), the “noise” can resolve into...
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