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2. Line doubler - Wikipedia

   en.wikipedia.org/wiki/Line_doubler

   A line doubler is a device or algorithm used to deinterlace video signals prior to display on a progressive scan display. The main function of a deinterlacer is to take an interlaced video frame which consists of 60 two-field interlaced fields of an NTSC analogue video signal or 50 fields of a PAL signal, and create a progressive scan output ...

3. Slit-scan photography - Wikipedia

   en.wikipedia.org/wiki/Slit-scan_photography

   Originally used in static photography to achieve blurriness or deformity, the slit-scan technique was perfected for the creation of spectacular animations. It enables the cinematographer to create a psychedelic flow of colors. Though this type of effect is now often created through computer animation, slit-scan is a mechanical technique.

4. Scan conversion - Wikipedia

   en.wikipedia.org/wiki/Scan_conversion

   Scan conversion or scan converting rate is a video processing technique for changing the vertical / horizontal scan frequency of video signal for different purposes and applications. The device which performs this conversion is called a scan converter .

5. Interlaced video - Wikipedia

   en.wikipedia.org/wiki/Interlaced_video

   Interlaced scan refers to one of two common methods for "painting" a video image on an electronic display screen (the other being progressive scan) by scanning or displaying each line or row of pixels. This technique uses two fields to create a frame. One field contains all odd-numbered lines in the image; the other contains all even-numbered ...

6. CamScanner - Wikipedia

   en.wikipedia.org/wiki/CamScanner

   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. The app is based on freemium model, with ad-supported free version and a premium version with additional functions.

7. Raster scan - Wikipedia

   en.wikipedia.org/wiki/Raster_scan

   The resulting tilt in the scan lines is very small, and is dwarfed in effect by screen convexity and other modest geometrical imperfections. There is a misconception that once a scan line is complete, a cathode-ray tube (CRT) display in effect suddenly jumps internally, by analogy with a typewriter or printer's paper advance or line feed ...