Vladimir Vassilevsky antispam snipped-for-privacy@hotmail.com posted to sci.electronics.design:
>
> JosephKK wrote:
>
>
>> I am pretty curious about the physical understanding / application
>> of the 3D FFT.
>
> The understanding is pretty simple: imagine a cube where the FFT is
> computed along X, Y, Z. This works very good for the applications
> like video compression, where the third dimension is time. The 3d
> FFT approach is capable of better compression then the traditional
> schemes like MPEG, and the computing workload is significantly
> lower. However in MPEG the decompressor requires somewhat 100 times
> less of processing, then the compressor, whereas in the 3d FFT
> approach the decompressor demands are comparable to that of the
> compressor. So the decoders for MPEG are cheap and simple, and all
> of the complexity is on the encoder side. This is better for the
> typical consumer video applications.
>
> Vladimir Vassilevsky
> DSP and Mixed Signal Design Consultant
>formatting link
Nice. I was thinking also along 3D raster image manufacturing.