Image compression
Image Compression
Image Compression (pronunciation: /ˈɪmɪdʒ kəmˈprɛʃən/) is a technique used in digital imaging to reduce the amount of data required to represent a digital image or video, without significantly reducing the quality of the image. The main goal of image compression is to reduce the storage requirements and to allow faster transmission times when images are transmitted over a network or the internet.
Etymology
The term "Image Compression" is derived from the English words "Image", meaning a representation of the external form of a person or thing in art, and "Compression", which refers to the action of making something occupy a smaller space or volume through pressure. In the context of digital imaging, it refers to the process of reducing the digital size of a file.
Types of Image Compression
There are two main types of image compression: Lossless and Lossy.
- Lossless - This type of compression ensures that the image can be perfectly reconstructed from the compressed data. It is ideal for medical imaging, technical drawings, clip art, or comics.
- Lossy - This type of compression reduces data by removing unnecessary information. This method is most often used with photographs and complex artwork.
Related Terms
- Data Compression - A process that reduces the number of bits needed to represent data.
- File Format - A standard way that information is encoded for storage in a computer file.
- JPEG - A commonly used method of lossy compression for digital images.
- Pixel - The smallest unit of a digital image or picture that can be displayed and represented on a digital display device.
See Also
External links
- Medical encyclopedia article on Image compression
- Wikipedia's article - Image compression
This WikiMD article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski