Photo Manipulation

Today I have experienced some stuffs about photo manipulation. First of all, let me explain some terms.

A palette is a designated subset of the total range of colors supported by a computer graphics system. Each color in the palette is assigned a number, and for each pixel, one of these numbers is stored.
This number determines the color of the pixel.

Bit determines colour of pixals, it is the measurment of quality in visual. more bits lead to higher quality of diagram. Like, 8-bit is equal to 256 colour; 16 bit equals to 65536; 24 bit means it has 16777216 color.

The characteristics of dithering is a mix of colour in a colour palette, through the process, we can mix out different colours; for example, #FF0000″ is red.

DPI means Dot-per-inch, it is a measurment of printing resolution.

Here is the explaination of some photo format:

JPEG is Joint- photograph-expert-group, it is a compressed into a stream of bytes. so it is comparatively small, but the quality is fixed.

GIF is Grahpic-Interchange-Format, it is a small animations with low resolutions- 256 colurs only. Its charactistics are small and with animation

PNG is Portable Network Graphic, originally it stores Line art, photograph image. No compression lose, stay real

TIFF is Tagged-format-file-format.  Compression ratio remain unchanged.

Step 1

 

Step 2, background

Step 3, fill with red … ?

 

Fill with red colour ? … sure ?

 Step 4, adjusting the brightness setting , etc

step 5, end up before turning greyscale

Below are different format: jpeg, gif, png, tiff

JPEG

GIF

PNG:

and TIFF : http://www.fileden.com/files/2007/2/27/829219/bird.tiff

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Date

April 2007
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