lossless compression of still images - recommendations?

Aryan Ameri public at aryanameri.com
Mon Feb 20 22:43:57 UTC 2017


On 20/02/2017 18:01, Ralf Mardorf wrote:
> On Mon, 20 Feb 2017 11:45:48 +1100, Aryan Ameri wrote:
>> What you are looking for is using some film compression algorithm such
>> as h.264. Those algorithms excel at doing frame by frame comparisons
>> and then only storing the pixels that have changed. If storage as a
>> movie format meets your needs, it would be easy to turn the series of
>> jpeg pictures into a h.264 encoded movie, and the resulting file size
>> would be tiny. A few million 5MP pictures (frames) would easily fit in
>> a 1 GiB file.
> 
> The quality of the single pictures of even professional film cameras is
> less good, than those of a consumer reflex camera. A film aren't
> stills, so it's missing the details and definition a still provides.
> 

Depends on your lens. With mirrorless cameras, that is not true. If you
use a camera such as a Panasonic Lumix DC-GH5, you'll see that it treats
video just as a series of continues photos shot at 24-60 fps.

Besides, what does this have to do with my statement? I didn't say that
the OP should use a video camera. I said the OP would see significant
file size reductions if they turned their series of pictures into a film
using a codec such as h.264 (IFF archival in movie form is sufficient
for their purposes).

-- 
AA



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