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A diagram of a pinhole camera. 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.
A French Army EC-665 Tiger during a firing exercise from Forward Operating Base Morales-Frazier on January 23, 2011 in Kapissa, Afghanistan In August 2009, the German magazine Der Spiegel reported that the ten operational Tigers in the German Army were only suitable for pilot training, while others had not been accepted due to defects. [ 73 ]
This model was then used to look up 100 one-second video segments, in a database of 18 million seconds of random YouTube videos, matching visual patterns to brain activity recorded when subjects watched a video. These 100 one-second video extracts were then combined into a mash-up image that resembled the video. [141] [142] [143]