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The counter depth was 15-bit. The maximum count rate per pixel was 2 MHz per pixel. Medipix-2 is the successor of Medipix-1. The pixel pitch was reduced to 55 μm and the pixel array is of 256x256 pixels. Each pixel has two discrimination levels (upper and lower threshold) each adjustable individually in pixels using a 3-bit offset.
(* The pixel number of 6,000x4,000 ist the number of "effective pixels". The sensor usually has a few extra rows of pixels on all four sides, which explains the sensor resolution of 24.3 MPixels often stated, but no information about the exact image size available.) 6,016 4,000 24,064,000 24.1 Nikon D3300 Canon M50: 6,048 4,032 24,385,536 24.4
Image at left has a higher pixel count than the one to the right, but is still of worse spatial resolution. The measure of how closely lines can be resolved in an image is called spatial resolution, and it depends on properties of the system creating the image, not just the pixel resolution in pixels per inch (ppi).
Horizontal pixel count of the following embedded thumbnail. Must not be zero Ythumbnail: 1: Vertical pixel count of the following embedded thumbnail. Must not be zero Thumbnail palette: 768: 256 palette entries, each containing a 24 bit RGB color value Thumbnail data: n: One byte per pixel containing the index of the color within the palette,
Example video in 16K (16000 × 9000 pixels) A VR video in 16K (16000 × 8000 pixels) 16K resolution is a display resolution with approximately 16,000 pixels horizontally. The most commonly discussed 16K resolution is 15360 × 8640, which doubles the pixel count of 8K UHD in each dimension, for a total of four times as many pixels. [1]
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When a photon interacts in a PCD, the amplitude of the resulting electrical pulse is roughly proportional to the photon energy. By comparing each pulse produced in a pixel with a suitable low-energy threshold, contributions from low-energy events (resulting from both photon interactions and electronic noise) can be filtered out.
Photon counting eliminates gain noise, where the proportionality constant between analog signal out and number of photons varies randomly. Thus, the excess noise factor of a photon-counting detector is unity, and the achievable signal-to-noise ratio for a fixed number of photons is generally higher than the same detector without photon counting.