Computer Science 1033A/B Lecture Notes - Lecture 2: Upsampling, Interpolation, Ellipse

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Vivi Tryphonopoulos

Document Summary

All photo images (from camera, scanner) are bitmapped images (. jpg . gif . png) Bitmapped images (raster images): smallest unit of an image is the pixel (square, blocky when increase in size. Vector images: are scalable-will not be blocky if you increase or decrease size, resolution independent takes on resolution of output device, vector images based on a mathematical relationship, but are scalable, will not get blocky. To change image dimensions: select image> size, provides two measurements: You are physically changing the number of pixels in the image for the web, adding or taking away pixels. Pixel dimensions = web: width/height of our image in pixels. Total # of pixels = 2048 x 1536 = 3,145,728: to change simply type new values. Remember when going from smaller larger dimensions you will get blurriness/pixilation. The higher the image dimensions to begin, the better the outcome.