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OT Inverted/negative picture viewer?



 
 
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  #1  
Old March 21st 16, 07:42 AM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
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Posts: 2,378
Default OT Inverted/negative picture viewer?

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently that
will negate having to toggle color inversion whenever playing a video. But
looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I have
found some that allow inverting colors in the editing process, but I'm
talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures instead
of videos.

Thanks.
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  #2  
Old March 21st 16, 09:30 AM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
Paul
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Posts: 18,275
Default OT Inverted/negative picture viewer?

John Doe wrote:
Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently that
will negate having to toggle color inversion whenever playing a video. But
looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I have
found some that allow inverting colors in the editing process, but I'm
talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures instead
of videos.

Thanks.


According to this, Irfanview has a command line
option to invert a picture. Perhaps you could use
that somehow ?

http://www.robvanderwoude.com/files/iviewcli.txt

irfanview /invert ...

But that's not likely to make the decorations
on the Irfanview window do the right thing.

Paul
  #3  
Old March 21st 16, 01:17 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
Keith Nuttle
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Posts: 1,844
Default OT Inverted/negative picture viewer?

On 3/21/2016 4:30 AM, Paul wrote:
John Doe wrote:
Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently
that will negate having to toggle color inversion whenever playing a
video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.


According to this, Irfanview has a command line
option to invert a picture. Perhaps you could use
that somehow ?

http://www.robvanderwoude.com/files/iviewcli.txt

irfanview /invert ...

But that's not likely to make the decorations
on the Irfanview window do the right thing.

Paul

I do not understand what you are doing. Are you running movies with the
colors inverted, or are you taking individual pictures inverting the
color and using them as screen savers.


With a toolbar function, Irfanview will invert the all colors on any
picture that it is showing. In addition you can invert the red, green,
or blue channel of the picture for different effects.
  #4  
Old March 21st 16, 02:19 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
Stormin' Norman
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Posts: 1,877
Default OT Inverted/negative picture viewer?

On Mon, 21 Mar 2016 06:42:56 -0000 (UTC), John Doe
wrote:

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently that
will negate having to toggle color inversion whenever playing a video. But
looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I have
found some that allow inverting colors in the editing process, but I'm
talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures instead
of videos.

Thanks.


Irfanview key combination:

ctrl+shift+N
  #5  
Old March 21st 16, 08:13 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
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Posts: 2,378
Default OT Inverted/negative picture viewer?

Stormin' Norman wrote in
:

On Mon, 21 Mar 2016 06:42:56 -0000 (UTC), John Doe
wrote:

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently
that will negate having to toggle color inversion whenever playing a
video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.


Irfanview key combination:

ctrl+shift+N


I'm talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures
instead of videos.
  #6  
Old March 21st 16, 08:18 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
external usenet poster
 
Posts: 2,378
Default OT Inverted/negative picture viewer?

Keith Nuttle wrote in
:

On 3/21/2016 4:30 AM, Paul wrote:
John Doe wrote:
Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors.
Apparently that will negate having to toggle color inversion
whenever playing a video. But looks like VLC fails as an image
viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.


According to this, Irfanview has a command line option to invert a
picture. Perhaps you could use that somehow ?

http://www.robvanderwoude.com/files/iviewcli.txt

irfanview /invert ...

But that's not likely to make the decorations on the Irfanview window
do the right thing.

Paul

I do not understand what you are doing.


What, specifically, don't you understand?

Are you running movies with the colors inverted,


Yes, VLC media player makes it easy. After you change a setting, every
video you run is inverted.

or are you taking individual pictures


No, I'm talking about viewing pictures.

inverting the color and using them as screen savers.


Screen savers?

With a toolbar function, Irfanview will invert the all colors on any
picture that it is showing.


I'm talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures
instead of videos.
  #7  
Old March 21st 16, 08:29 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
external usenet poster
 
Posts: 2,378
Default OT Inverted/negative picture viewer?

Paul wrote:

John Doe wrote:


Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors.
Apparently that will negate having to toggle color inversion whenever
playing a video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.


According to this, Irfanview has a command line option to invert a
picture. Perhaps you could use that somehow ?

http://www.robvanderwoude.com/files/iviewcli.txt

irfanview /invert ...

But that's not likely to make the decorations on the Irfanview window
do the right thing.


I can do without. All Windows colors can be manually inverted whenever
viewing pictures. Besides having to press a keystroke combination or say
"invert", the only downside is that everything else in Windows in the
background becomes white, so the image viewer needs to be maximized.

Seems weird that VLC media player allows persistently inverting the
color of videos but apparently there is no picture viewer that allows
persistently inverting the color of images. But, oh well, I guess that's
just the coolness of VLC media player.

  #8  
Old March 21st 16, 09:07 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
Big Bad Bob
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Posts: 793
Default OT Inverted/negative picture viewer?

On 03/21/16 12:13, John Doe so wittily quipped:
Stormin' Norman wrote in
:

On Mon, 21 Mar 2016 06:42:56 -0000 (UTC), John Doe
wrote:

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently
that will negate having to toggle color inversion whenever playing a
video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.


Irfanview key combination:

ctrl+shift+N


I'm talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures
instead of videos.


maybe you could grab sample code from an open source appLICATION and
then write one? just a thought...

I'm not sure which GDI operation will do what you want. the color
transform for 'negative' would be to invert the angle on the color wheel
to be 180 degrees of what it was. it's only a 2D transform so maybe not
that hard, read RGB for each pixel, use the calculation for 'chroma' and
invert it to 180 degrees of what it was, then re-calculate RGB from
that, write the pixel, then when you're done, display it. Have it read
every file in a directory, one at a time, and let you scroll through
them with arrows. that'd work, probably.



  #9  
Old March 21st 16, 09:08 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
Big Bad Bob
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Posts: 793
Default OT Inverted/negative picture viewer?

On 03/21/16 13:07, Big Bad Bob so wittily quipped:
On 03/21/16 12:13, John Doe so wittily quipped:
Stormin' Norman wrote in
:

On Mon, 21 Mar 2016 06:42:56 -0000 (UTC), John Doe
wrote:

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors. Apparently
that will negate having to toggle color inversion whenever playing a
video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.

Irfanview key combination:

ctrl+shift+N


I'm talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures
instead of videos.


maybe you could grab sample code from an open source appLICATION and
then write one? just a thought...

I'm not sure which GDI operation will do what you want. the color
transform for 'negative' would be to invert the angle on the color wheel
to be 180 degrees of what it was. it's only a 2D transform so maybe not
that hard, read RGB for each pixel, use the calculation for 'chroma' and
invert it to 180 degrees of what it was, then re-calculate RGB from
that, write the pixel, then when you're done, display it. Have it read
every file in a directory, one at a time, and let you scroll through
them with arrows. that'd work, probably.




oh yeah you'd have to invert the 'Luma' also, so that black becomes
white, etc.

  #10  
Old March 21st 16, 10:23 PM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
external usenet poster
 
Posts: 2,378
Default OT Inverted/negative picture viewer?

Big Bad Bob wrote in
:

On 03/21/16 12:13, John Doe so wittily quipped:
Stormin' Norman wrote in
:

On Mon, 21 Mar 2016 06:42:56 -0000 (UTC), John Doe
wrote:

Furthering my quest to make dark Windows look fantastic.

VLC media player includes an option to invert video colors.

Apparently
that will negate having to toggle color inversion whenever playing a
video. But looks like VLC fails as an image viewer.

So I need a picture/image viewer that will show pictures inverted. I
have found some that allow inverting colors in the editing process,
but I'm talking about viewing successive images inverted without
having to repeatedly change settings. Like VLC media player, but for
pictures instead of videos.

Thanks.

Irfanview key combination:

ctrl+shift+N


I'm talking about viewing successive images inverted without having to
repeatedly change settings. Like VLC media player, but for pictures
instead of videos.


maybe you could grab sample code from an open source appLICATION and
then write one? just a thought...

I'm not sure which GDI operation will do what you want. the color
transform for 'negative' would be to invert the angle on the color wheel
to be 180 degrees of what it was. it's only a 2D transform so maybe not
that hard, read RGB for each pixel, use the calculation for 'chroma' and
invert it to 180 degrees of what it was, then re-calculate RGB from
that, write the pixel, then when you're done, display it. Have it read
every file in a directory, one at a time, and let you scroll through
them with arrows. that'd work, probably.


VLC media player is open source, why not just look there. It loads images
and plays videos, all inverted.
  #11  
Old March 22nd 16, 01:45 AM posted to alt.comp.os.windows-8,alt.comp.os.windows-10
John Doe[_8_]
external usenet poster
 
Posts: 2,378
Default OT Inverted/negative picture viewer?

For Chrome, writing an extension that will invert images and videos
seems easy enough (via copy and paste).

If so, that's just about everything to make a complete dark windows
theme, except for uninverting still images in Windows outside of
chrome. It's really luck that VLC media player just happens to include a
option to persistently uninvert videos. Since picture/photo viewers do
not even do that, I can't imagine any other video player doing that.

There are some Chrome extensions to invert pictures and videos, but for
some strange reason they do not simply invert, they add some tint. One
chrome extension appears to do videos well, but it doesn't do pictures,
and it includes stuff that isn't necessary.

I see no difference in CPU or memory usage when inverting or uninverting
videos.


--

Chrome

manifest file...
{
"manifest_version": 2,
"name": "invert videos and images",
"version": "1.0",
"content_scripts": [
{
"matches": [
"all_urls"],
"js": ["content.js"]
}
]
}
javascript file...
javascript:var imgs=document.getElementsByTagName("img");for(i=0; i
imgs.length;i++){imgs[i].setAttribute("style","-webkit-filter:invert
(100%)");};
javascript:var vids=document.getElementsByTagName("video");for(i= 0;i
vids.length;i++){vids[i].setAttribute("style","-webkit-filter:invert
(100%)");};

Won't do all items of concern, but it can be edited.
 




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