why discrete sine transform is not used in Image compression

[chegu.balaji]

discrete sine transform

in JPEG we do the compressions in the transformed domain using DCT ( discrete cosine transform ) . why we avoid DST ?

 

[bhatt_tanmay]

Re: why discrete sine transform is not used in Image compres

hi, your question is basically of image processing? and some what of applied maths? what u do first is just go throw the " 2nd edition ,chapter 8 of DIGITAL IMAGE PROCESSING by GONZALEZ and WOODS and then understand
image compressions like CONSTANT AREA CODING, TRANFORM CODING ,RELATIVE ADDRESS CODING,BIT PLANE CODING ETC,ETC?
then study DCT/DST from the first edition of same book from chapter 3/4th.
and then u will be able to get your answer Ucan also take help of book's website "IMAGEPROCESSINGBOOKS.COM

 

[chegu.balaji]

yes its abt image processing. can anyone explain it in simple terms

 

[patolfo]

Re: why discrete sine transform is not used in Image compres

if you use dst instead of dct, then your main focus ie the spot where the majority of the energy condenses is at the center I think instead of one corner as in the dct