Akshay, 1) An AOI can be created using the -projwin option in gdal_translate. You can use that option when creating a new raster with a new tiles size.
2) Using the Python bindings it is possible to read a segment of a raster into memory without allocating memory. I am unsure using another other language. Jay On Wed, Mar 28, 2012 at 5:16 AM, Mateusz Loskot <mate...@loskot.net> wrote: > On 28 March 2012 07:45, akshay gupta <akshaygupta...@gmail.com> wrote: > > 2) When I read an image through ReadBlock() i had to allocate some memory > > and pass it in the function. Is there some way that i get the image data > > stored in GDALRasterBlock directly without passing my own allocated > memory. > > http://www.gdal.org/classGDALRasterBlock.html#_details > > "In normal situations applications do not interact directly > with the GDALRasterBlock - instead it it utilized > by the RasterIO() interfaces to implement caching" > > Best regards, > -- > Mateusz Loskot, http://mateusz.loskot.net >
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