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An image scanner (often abbreviated to just scanner) is a device that optically scans images, printed text, handwriting, or an object and converts it to a digital image. The most common type of scanner used in the home and the office is the flatbed scanner , where the document is placed on a glass bed.
CamScanner is a Chinese mobile app first released in 2010 [1] [2] that allows iOS and Android devices to be used as image scanners. [3] It allows users to 'scan' documents (by taking a photo with the device's camera) and share the photo as either a JPEG or PDF. This app is available free of charge on the Google Play Store and the Apple App Store.
JPEG XS favors visually lossless quality in combination with low latency and low complexity, over date reduction through compression. It is not a direct competitor to alternative image codecs like JPEG 2000 and JPEG XL or video codecs like AV1, AVC/H.264 and HEVC/H.265 which tend to focus on compression efficiency. Other important features are:
PhotoRec is a free and open-source utility software for data recovery with text-based user interface using data carving techniques, designed to recover lost files from various digital camera memory, hard disk and CD-ROM.
In a raster scan, an image is subdivided into a sequence of (usually horizontal) strips known as "scan lines".Each scan line can be transmitted in the form of an analog signal as it is read from the video source, as in television systems, or can be further divided into discrete pixels for processing in a computer system.
The JPEG File Interchange Format (JFIF) is an image file format standard published as ITU-T Recommendation T.871 and ISO/IEC 10918-5. It defines supplementary specifications for the container format that contains the image data encoded with the JPEG algorithm.
Most raw files contain a full size JPEG conversion of the image, which is used to preview the file on the camera's LCD panel. In the case of motion picture film scans, either the timecode, keycode or frame number in the file sequence which represents the frame sequence in a scanned reel. This item allows the file to be ordered in a frame ...
JPEG XL Image Coding System — Part 1: Core coding system [5] Part 2: 13 October 2021: 18181-2:2024: JPEG XL Image Coding System — Part 2: File format [15] Part 3: 3 October 2022: 18181-3:2025: JPEG XL Image Coding System — Part 3: Conformance testing Part 4: 5 August 2022: 18181-4:2022: JPEG XL Image Coding System — Part 4: Reference ...