Re: [gentoo-user] Cellphone VFAT datestamps versus linux datestamps

[james <garftd@verizon.net>]

On 8/28/18 10:39 PM, Walter Dnes wrote:
> On Mon, Aug 27, 2018 at 11:31:33PM -0400, james wrote
> 
>> Exif is the  data particulars form man image(photo) file formats
>>
>>
>> media-libs/exiftool
>> Read and write meta information in image, audio and video files
> 
>   This is getting "curiouser and curiouser".  I should have done this
> sooner.  I assumed that the datestamp and EXIF data would be the same.
> But checking "properties" with gqview shows the EXIF date data is
> correct, with the file datestamp being out to lunch...
> 
> [i660][waltdnes][~/camera/20180824] exiftool -T -CreateDate IMG_0363.jpg 
> 2018:08:24 14:12:19
> 
> [i660][waltdnes][~/camera/20180824] ll -og IMG_0363.jpg 
> -rw-r--r-- 1 477731 Jan 26  2013 IMG_0363.jpg
> 
>   Given this info, I can cobble together a short script.  A "for" loop
> cycles through "*.jpg".  Read "CreateDate" from the EXIF data, and feed
> it into the "touch" command, which would reset the physical file
> datestamp.
> 



Your other post; verycool old phone; I to have several flip phones
an LG still 'on service. JTAG interfaces to the hardware is even cooler.
Gotta get a giant magnifier for that sort of access work.
<snip>


Glad to have helped. If you get into EXIF data.
check out "photogammetry" as 2d still photos can be 'stitched' together
to create awesome 3D and 3D+motion models. One of the key usages of HPC.
If I can only stay healthy.... SfM (structure from motion) is my latest
addiction....

It's just very very cool technology. Some folks are building  3D-motion
models of the inside of their lab. Cover the wall with monitors
and then animate the objects inside, work remotely (like a VR game) or
walk into the home_lab and work as normal.  Building your own, is where
the fun is. Get a UAV pilot's license and a sub 1K drone and well, just
let your imagination go wild!


gqview   -- nice piece of old software. I'll have to check it out..
it's age on sourceforge is a bit to worry about. I'd pack it up and
put it in /usr/local/....   or at least into a github/gitlab/gogs or
wherever you archive codes. Lots of stuff is disappearing now, related
to geo-tagging and image processing. I've pretty much settled on
[ https://gogs.io ]


Surely there are plugins for palemoon  that yield up EXIF data?
(btw palemoon-28.0.0 is very stable). Here are some random points of
interest,should your 2D images lead to 3D and beyond; here's a good intro::

https://www.prusaprinters.org/photogrammetry-3d-scanning-just-phone-camera/


<lots of codes in portage, hit me up if you are interested in more>

Here is the latest read on mixed reality::


https://software.intel.com/en-us/blogs/2018/06/18/siggraph-2018-the-state-of-photogrammetry-in-real-time-graphics


And if intel machines get 'out of control' well, we'll just have to jolt
the some electrons with odd_spin::

https://github.com/ptresearch/IntelTXE-PoC


All of this on gentoo?  Sure, that's why I'm working on
Hybrid-heterogeneous HPC gentoo clusters. But I'm AMD_Radeon_arm64 open
source centric with my work. I'd be most appreciated if anyone can add more
detail, list of FOSS codes, or other related packages and details.


hth,
James