Raster images
Raster
images are made up of pixels, as was mentioned within the previous post pixels
build up an overall image, now we get in to more detail about these pixels each
pixel is given a specific RGB (red, green,blue.) value the purpose of this is
to build up the detail of the image.
Lossless
means that from the RAW capture of the image you took none of the information
will be disguarded and it will stay at almost full quality, file extentions
that do this are TIFF and BMP.
(BMP File)
Lossy
means that mean compressed information is disguarded in order to make the file
smaller this however looses detail within the image and can cause images to
become blocky when zoomed in file extentions that do this are JPG and PNG and
PSD.
Vector images
Vector
images are made of lines,curves and polygons these shapes have points on them
these points can be adjusted and manipulated without loosing resolution
meaning they can constantly be edited without loosing information unlike
raster images which loose information each time they are manipulated these
images can be saved in the following file extentions EPS (encapisulated post
script.) AI (adobe illistarater.) Or FLA (flash authorising file.) they can
only be saved in this way because they are not made up of pixes they are made
of the lines,curves and polygons i previously mentioned.
Good post to clarify the both types of graphics and also the process of raster to vector conversion. Keep it up. Thanks.
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