Creating a large dicom file

[samnaction]

I am currently reading a WSI image and trying to create a DCM file from it. I am reading the tiles from the layer and writing the tile as a frame in Dicom. The problem is when I am reading a baseline image, it has close to 6000 tiles. So I will be creating 6000 frames. These 6000 frames are in application memory and written only when I save the DCM file. Is there any way to write the frames directly to file instead of keeping in memory and then writing to file?

P.S: I don't want to create one DCM file per frame. I need to create one DCM file per layer

[J. Riesmeier]

You could create the pixel data for the image tiles on demand, e.g. by sub-classing the DcmPixelItem class and overwriting the write() method. However, please be warned that creating a Basic or Extended Offset Table and also determining the value for Lossy Image Compression Ratio in advance might be a challenge (that could be mastered, though).