COSC 109 Lecture 2: Chapter 2

• School: Towson University
• Department: Computer Science
• Course: COSC 109
• Professor: Raza Hasan

Document Summary

Chapter 2: fundamentals of digital imaging: digitization: to convert analog information into digital data that computers can handle. Resolution-in digital imaging, increasing the sampling rate is equivalent to increasing the image resolution: more resolution means more peg holes. Consequences of higher resolution: the file size of the digitized image is larger, you gain more detail from the original scene. A pixel is not a square block: a pixel is a sample point. This causes the loss of the image fidelity and details. Bit depth- the number of colors used for quantization is related to the color depth or bit depth of the digital image. A 24-bit image allows 224 (i. e. , 16,777,216) colors: the more colors in the picture the more clear the picture is. Extensions for vector files- fla, eps, wmf, swf, ai. Extensions for pixel based files- jpeg, png, gif,