Lossy compression 2
An image-compression scheme, such as JPEG, that creates smaller files by discarding image information, which can affect image quality.
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Lossy compression
Techniques Glossary Lossy compression
Where pixels are removed (lost) to make the file size of a digital image smaller. When compressing images using the JPEG format you have the option of varying the level of compression.
Lossy Compression A reduction of image file size by disposing of unneeded data, resulting in a slight degradation of image quality. Low Key Refers to an image distinguished by overall dark tones.
Lossy compression
A method of reducing image file size by throwing away unneeded data, causing a slight degradation of image quality. JPEG is a lossy compression method.
Lossy compression - A type of file compression that results in the loss of image data every time the image is saved. JPEG is a lossy file format.
lossy compression:
This compression method minimizes file size by eliminating unnecessary data, which causes a slight degradation of image quality.
low-key image: ...
lossy compression
a compression technique that will sacrifice some image quality at low levels and continue to degrade more image quality as compression levels increase.
Lossy Compression
Software algorithms (and accompanying file formats) used for reducing files sizes were data (often targeting redundant data) is discarded during compression and is not fully restored when decompressed.
lossy compression
A compression algorithm that reduces file size by actually removing imformation from the image, audio or video signal.
Lossy compression
A method of image compression where some image quality is sacrificed in exchange for higher compression ratios. The amount of quality degradation depends on the compression algorithm used and a user selected quality variable.
Lossy compression - used by a file format such as JPEG - can create smaller files but in doing so throws away some of the original image data. The more compressed an image is with a lossy method the more degraded it becomes.
I hate lossy compression. Keep your image quality settings high to avoid shots like that one. You might see this and think - Well, DUH! ...
JPEG provides for lossy compression of images (although there are variations on the standard baseline JPEG which are lossless).
RAW images aren't compressed using a lossy compression scheme that throws out data to make image files smaller. Although some cameras have a compressed RAW format, these images are compressed using lossless compression.
The most common image format amongst digital cameras is JPEG, it's a format which produces relatively small files from large amounts of image data by discarding certain information, as JPEG uses a "lossy compression algorithm".
The most important thing to keep in mind is that JPEG is a lossy compression algorithm, meaning that every time you save a JPEG, you are losing information in the process of compressing it.
However, some camera manufacturers may use lossless or slightly lossy compression to reduce file size. Lossless compression is where the image is compressed, but no information is lost.
Consequently, a lossy compression cannot reproduce the original exactly. You can identify files that have been through a lossy compression by the suffix JPEG (Joint Photographic Experts Group) on the filename.
In computing, JPEG is a commonly used method of lossy compression for digital photography (image).
JPEG is lossy compression method and the amount of compression can be adjusted, with an inverse relationship between image quality and file size. JPEG has a standard compression ratio of 10:1 without any visible loss of image quality.
JPEG is a lossy compression technique, capable of reducing digital images files to about 5% of their normal size. [This is one of the reasons you can get as many images into your digital camera as you can.
Lossy compression can make images smaller than lossless, but at the cost of image degradation. JPEG files use lossy compression.
24-bit file format with lossy compression. Offers variable degrees of compression: Higher compression rates result in smaller file sizes but also increase compression artifacts.
Joint Photographic Experts Group (JPEG) is a lossy compression technique supported by JPEG, PDF, and PostScript language file formats.
JPEG - Joint Photographic Experts Group A very popular digital camera file format that uses lossy compression to reduce file sizes. Developed by the Joint Photographic Experts Group.
This includes various NR (DFS and dark current), lossy compression (in the case of the compressed NEF format), loss-less compression (Canon TIF/CRW/CR2 formats), ...
Lossy compression (JPEG is an example) can result in visible degradation of image quality, especially when saving the same image as a JPEG multiple times, because some image data is lost in each compression process.
It uses a lossy compression scheme by averaging the data in blocks of
8 x 8 pixels. Color variations that existed in the original image are lessened.
JPEG can achieve very high compression factors, the amount of which can be varied.
This is an acronym for Joint Photographic Experts Group. This is a technical committee that developed JPEG, which is a lossy compression format and the one found in most digital cameras.
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JPEG (Joint Photographic Experts Group)
Standard method of image data compression used to reduce the file size of digital images. It's known as lossy compression because there is a permanent loss of some data during the process.
In general, JPEG transformations are not reversible. Opening and then saving a JPEG file causes a new, lossy compression. Increasing the quality factor later will not bring back the image information which was lost.
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Discrete Cosine Transform. A mathematical transform used to convert data from a 3D to a 2D form. Used by lossy compression methods such as JPEG and MPEG.
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LOSSY - A form of image compression when saving the image that discards data from it. Saving a picture as a JPEG uses lossy compression.
JPEG is a standardized image compression mechanism designed for compressing full-colour or grey scale images of natural, real-world scenes. JPEG uses lossy compression, which can damage image quality.
 See also: Compression, Lossy, JPEG, Photograph, Digital
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