Thursday 21 March 2013

Web Week 7

This week in Web Publishing, we looked at the grey scale, dithering and pixel depth reduction

A grey scale is used to display black and white images. The more shades of grey available, the smoother the image will look. The grey scale is most frequently displayed in an 8-bit format which means the maximum number of shades available is 256.

Dithering is a system the computer uses to simulate a colour when only a set pallet is available. This is accomplished by placing two or more colours in a pattern on a pixel-sized scale so that from the users point of view, the image appears to be a different colour.

Pixel depth resolution describes how many colours an image needs. For example, an image with 24 bits per pixel would have 16 million colours available but if it was reduced to two bits per pixel, it would only have 4 possible colours. The system would then choose the colours which fit the best.

In the labs, our group decided to give up on the Google Online Marketing Challenge and instead do a 2000 word essay for assignment 3. I have chosen the title "Law in Virtual Worlds".

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