The dynamic range of any sensor used in digital cameras is defined by the largest possible signal divided by the smallest possible signal it can generate. The largest signal represents the maximum amount of light that can be converted by the sensor into a unique digital value that represents a pixel into a photo. The [...]
Archive for February, 2011
Compression
February 4th, 2011 
Andrei There are two ways in which digital images can be compressed: lossless and lossy. Lossless Compression Lossless compression is similar to what WinZip does. For example, if you compress a document into a ZIP file and later extract and open the document, the content will be identical to the original. No information is lost in [...]
Posted in Digital Imaging 
Tags: compression, digital image, jpeg, lossless, lossy, tiff 
Comments OffColor Spaces
February 1st, 2011 Andrei A color space (or color model) is an abstract mathematical model describing the way colours can be represented as groups of numbers, typically as three or four values or color components (e.g. RGB and CMYK are color models). The Additive RGB Colors The cells inside our eyes (called cone-shaped cells) are sensitive to red, green, [...]
