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2. Pinhole camera - Wikipedia

   en.wikipedia.org/wiki/Pinhole_camera

   A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole)—effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura effect.

3. Pinhole camera model - Wikipedia

   en.wikipedia.org/wiki/Pinhole_camera_model

   The pinhole camera model describes the mathematical relationship between the coordinates of a point in three-dimensional space and its projection onto the image plane of an ideal pinhole camera, where the camera aperture is described as a point and no lenses are used to focus light.

4. Pinhole (optics) - Wikipedia

   en.wikipedia.org/wiki/Pinhole_(optics)

   Pinholes are commonly used to spatially filter a beam (such as a laser beam), where the small pinhole acts as a low-pass filter for spatial frequencies in the image plane of the beam. [1] [2] A small pinhole can act as a lens, focusing light. This effect is used in pinhole cameras and camera obscura, and in solarigraphy.

5. How to Build a Pinhole Camera to See the Total Solar Eclipse ...

   www.aol.com/pinhole-projector-watch-solar...

   Making a pinhole camera at home is easy. You'll only need a few supplies: cardboard, white paper, and a push pin. 1. Start by taking your piece of cardboard and making a tiny hole directly in the ...

6. Homography (computer vision) - Wikipedia

   en.wikipedia.org/wiki/Homography_(computer_vision)

   Geometrical setup for homography: stereo cameras O 1 and O 2 both pointed at X in epipolar geometry. Drawing from Neue Konstruktionen der Perspektive und Photogrammetrie by Hermann Guido Hauck (1845 — 1905) In the field of computer vision, any two images of the same planar surface in space are related by a homography (assuming a pinhole ...

7. Camera obscura - Wikipedia

   en.wikipedia.org/wiki/Camera_obscura

   In practice, camera obscuras use a lens rather than a pinhole because it allows a larger aperture, giving a usable brightness while maintaining focus. [8] If the image is caught on a translucent screen, it can be viewed from the back so that it is no longer reversed (but still upside-down). Using mirrors, it is possible to project a right-side ...