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Asked: 2026-05-13T08:18:31+00:00

i have a templated class, with the following definition: ImageRescaleDepth<PIXEL_TYPE_INPUT, PIXEL_TYPE_OUTPUT> This class uses

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i have a templated class, with the following definition:

ImageRescaleDepth<PIXEL_TYPE_INPUT, PIXEL_TYPE_OUTPUT>

This class uses templates, for pretty much everything since its supposed to be generic. Anyways i need to make a command line version of this application, to do image rescaling, currently the system is setup to handle the following types:

1BIT, 2BIT, 4BIT, unsigned 8 bit, signed 8 bit, unsigned 16 bit, signed 16 bit, unsigned 32 bit, signed 32 bit, float, double.

These are passed in by command line, and i convert them to an enum.

I cannot modify the ImageRescaleDepth class since its part of a library. and i don’t exactly want to create a giant switch or eliseif block, since there would be a 100 combinations. Is it possible, i can just somehow store these types as variables? Then pass them to the constructor?

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1 Answer

  1. Editorial Team

    No, the type of a template class must be known at compile time, so the image types types have to be supplied to the template then. I have to say, that if this class is intended to perform conversions between many different formats, the use of template parameters to specify the conversion smacks of very poor design.

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