java - Write region (100x100px) to huge file without reading the target jpeg -


is possible write region (small 100x100px) image (250k x 250k px) without reading whole target image? region 100px in square , store @ location in huge jpeg. hints, durin

for raw format bmp need know write to.

but jpeg (lossy) compressed format. have keep data coherent compression algorithm. writing middle of image require algorithm support this. don't know jpeg in detail, don't think feature of it.


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