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Re: Automatically colourise B&W images using AI

David Richardson
 

David -

Yes, I had to go back and take a look again.  I thought the $299/yr was just for colorizing.  Did not realize that it included subscription to the rest of MyHeritage site.  For Susan it would make sense, but agree, just for colorization, too expensive.  Just curious if there is a size limit like there is with other sites?  Will it allow you to take the really large (for example) Library of Congress files?  All of the others that I have seen either fail or resize them smaller.

Thanks,

David Richardson
Civil War in 3D.com
Civil War in Color.com


Re: Automatically colourise B&W images using AI

David Richardson
 

Thank you for sharing this.  I have been doing colorization's for 10+ years and agree that the personal human touch has not been matched (yet). ;)  

I tried the image of Lily Elsie on other AI colorize programs and they all seem to have the same issue.  They don't seem to recognize that her dress is one color and that the ribbon around her neck is not a dividing line in the color.  I do like the skin tones and some of the other detail work.  I think the AI is good to get things started and on complex scenes can help to speed some of the very tedious detail work.  One of the things I don't like (at least for what I have seen now) is the size limitation.  All of these programs that I have found restrict the size.  I often work with images that the original starts out as a 100Mb Tiff file (Library of Congress images) and they fail trying to colorize for being too large, or the system will scale it down.  One of the AI's mentioned previously scaled an image that was originally 20Mp to less than 1Mp!  You lose all of the detail very frustrating!

David Richardson
Civil War in 3D.com
Civil War in Color.com


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

robert mcafee
 

Yes you can find a 49mm +5 Kenko Achromatic close up lens for $23.15 including shipping. For me I would pay additional $1.85 tax bringing delivered price to $25. 

Currently the next cheapest Kenko AC CU lens on eBay is $40 with shipping ($43.20 delivered with tax for me) and I think that one ships from Japan. Other brands of AC close up lenses of similar size can easily cost $100+. 

For me I noticed much more chromatic aberration with the non-achromat Kenko +10 lens than I observed with achromatic +3, +4 or +5 lenses. 


I too have a couple sets of close up diopters sold in sets of 4 from film days. These close up lens sets in that time frame were not that cheap. I seem to recall paying in the range of $20-$40 for a set. For what I was doing they were fine. However it has been my experience that I have more of a problem with chromatic aberration with digital than with film.  I have a Nikon 35mm f/2 lens for my DX format camera. I have very significant issues of purple fringing around areas of high contrast (not to mention back focus on my camera). 



Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

Ronald Schalekamp <info@...>
 

The prismatic effect of the closeup lenses was mentioned for a long time by Loreo, with their macro 3d lens:

' Closeup lenses allow the camera to be brought in closer to the subject, and also help correct parallax.'


Also, where could i buy this mentioned adapter for the Pana 3d lens?

And, someone mentions there are far better quality options for good macro 3D; wich ones would those be?
I can thnk of doing the chacha, but thats a hassle and not for moving critters.

How does the Lore Macro lens compare to the Pana 3D lens?

Greets, Ronald






Re: Automatically colourise B&W images using AI

Dan Vint
 

Could you explain the basic process or point me to some sites for doing this by hand? I've got books on hand coloring real photos, but have not come across a digital explanation.



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: "Depthcam via groups.io" <depthcam@...>
Date: 9/15/20 9:04 PM (GMT-08:00)
To: main@Photo-3d.groups.io
Subject: Re: [Photo-3d] Automatically colourise B&W images using AI

I have been colorizing pictures for some years now. I do it "by hand" like in the old days - except the "hand" is a mouse !

I came across auto colorizing online sites a few years ago and the one I had tried at the time was called "colorize-it.com".

The results varied.  Some were poor while others were excellent.  A few months ago, I found deepai.org and found the colorizing on this site was generally much better.  However it was not always the case.  I did several tests of the same pictures on both sites and something colorize-it got the better result but I would say that Deepai got it best most of the time.  The problem with both those sites is their output is low resolution.

What I would do if the output was higher resolution would be to use one of those converters and then redo the portions by hand that did not work correctly.  But sometimes noether of these sites works at all.

Here is an example of an old black & white postcard that AI colorizing just can't get right:




Colorize-it version:




DEEPAI version:




My hand-colored version:



Needless to say, a hand colored version can take a few hours.  However, sometimes there's nothing like the human touch !

Francois.


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

Depthcam
 

On Tue, Sep 15, 2020 at 01:26 PM, akdens2 wrote:
1024 is given in case a 16:9 image is desired.

The cropping shown in the images I copied is 4:3 and that corresponds to 1824 x 1368.  Therefore the width is less than 1920p.

The value to remember here is the maximum 1824x1024 when the image is cropped for 16:9.  And that is less that the 1080p standard (1920x1080p)


> I think you can still extract a 1824x1824 image if you want.


As I understand it, when the 1:1 aspect ratio is chosen, the width is further reduced to 1712 x 1712 - possibly so as to avoid any risk of vignetting at the top and bottom edges ??


> Why it decreased from 2048 to 1824 could be side cropping necessities due to various reasons.


The point is these values were put up on the net in two places with the same wrong information.

Francois


Re: Automatically colourise B&W images using AI

Depthcam
 

I have been colorizing pictures for some years now. I do it "by hand" like in the old days - except the "hand" is a mouse !

I came across auto colorizing online sites a few years ago and the one I had tried at the time was called "colorize-it.com".

The results varied.  Some were poor while others were excellent.  A few months ago, I found deepai.org and found the colorizing on this site was generally much better.  However it was not always the case.  I did several tests of the same pictures on both sites and something colorize-it got the better result but I would say that Deepai got it best most of the time.  The problem with both those sites is their output is low resolution.

What I would do if the output was higher resolution would be to use one of those converters and then redo the portions by hand that did not work correctly.  But sometimes noether of these sites works at all.

Here is an example of an old black & white postcard that AI colorizing just can't get right:




Colorize-it version:




DEEPAI version:




My hand-colored version:



Needless to say, a hand colored version can take a few hours.  However, sometimes there's nothing like the human touch !

Francois.


Re: Automatically colourise B&W images using AI

David Starkman
 

Hi David,
Yes. MyHeritage would not be worth it just for the colorizing feature. Susan is deep into genealogy and subscribes to MyHeritage and Ancestry.com anyway. As others have already pointed out there are other free sites that seem very similar. I tried https://colourise.sg/ and it seems very similar, at least on a quick test. - David


Re: RED Hydrogen review #hydrogen

robert mcafee
 

.


Re: T2 adapter equivalent for mirrorless cameras #cameras-issues #macro

robert mcafee
 

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Re: Facebook's 2d to 3d AI project

robert mcafee
 

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Re: 3D Vision Monitor

robert mcafee
 

For anyone interested PC Richardson in NY City area has the Acer XB241H NVIDIA 3D Vision ready (requires emitter) for $299.99 with free shipping.  (Shows as on sale for $309 with lower price in cart).  Price on Acer's site is $399

For those in Texas or Nebraska or Iowa the Nebraska Furniture Mart has this monitor for $279.99.  They had this for a lower price a while ago but they have a limited area to which they are allowed to ship and they could not ship to NY


Re: Automatically colourise B&W images using AI

Philip Heggie
 

 

 

This one is free and nearly as good as My Heritage

https://deepai.org/machine-learning-model/colorizer

 


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

Oktay
 

A reason here could be stereo window adjustment because of inclusion of a near object.
Oktay


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

Oktay
 

1024 is given in case a 16:9 image is desired.
I think you can still extract a 1824x1824 image if you want. 
Why it decreased from 2048 to 1824 could be side cropping necessities due to various reasons.

Oktay


Re: Automatically colourise B&W images using AI

Gordon Au
 

FYI: I haven't tested them thoroughly, but depending on the image, sometimes these free ones work passably well (as long as you don't need a large image):
http://deepai.org/machine-learning-model/colorizer (limited to 800 px?)
http://colourise.sg (limited to 1800 px?)


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

Depthcam
 

On Mon, Sep 14, 2020 at 08:12 PM, George Themelis wrote:
Also, I don’t think the advice to use the aspect ratio to wide to minimize the image loss is correct. The different aspect ratios allowed by the camera when it recognizes the lens only affect the vertical resolution, as shown in this table:
 
• 1824 x 1368 (4:3 - With 3D lens)
• 1824 x 1216 (3:2 - With 3D lens)
• 1824 x 1024 (16:9 - With 3D lens)
• 1712 x 1712 (1:1 - With 3D lens)

Hi George,

I am a bit puzzled by the low resolution values you list above.

Based on what I had found on the internet, with the GX series, 4:3 should be 2048x1536 for GX series cameras as below:



The same value shown here:




But interestingly, I just checked a sample MPO sent to me that was taken with a GX7 and the resolution is indeed 1824x1024.  Kinda disappointed to see it's under 1080p !

I wonder how the posters above ended up with a value of 2048x1536 ?

Francois


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

 

I agree that framing the right  image is a problem when you can only see the left. So using a closeup lens to help compensate and  keep framing similar between l&r is an attractive option. Linda


On Sep 15, 2020, at 9:45 AM, "timo@..." <timo@...> wrote:

One advantage of using the Lumix 3D lens on a non-Panasonic camera (or taping the contacts) is that you see the whole stereo image on the camera screen, in crossview no less. This lets you better frame the image. With the Panasonic camera, you only see what is on one of the lenses, and this can result in part of your subject being cropped off. You won’t know this until you remove the memory card and put the MPO on a separate device. 

Timo

On Sep 14, 2020, at 9:27 PM, George Themelis <gathemelis@...> wrote:

 I am lazy and I like to get MPO files from this lens.
 
George
 
 
From: Chuck
Sent: Monday, September 14, 2020 11:01 AM
Subject: Re: [Photo-3d] Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test
 

Linda and George, I did mean to mention that the +4 and +5 CL lenses yield MPO files that were pretty well aligned, whereas the lens with spacers required significant x axis alignment; thank you for bringing this up. Not a problem to quickly align them, but certainly there is some real estate of the image that will be lost. It's a good reason to have your camera aspect ratio set to wider than you may need if you are using the lens with spacers.


Re: Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test

timo@guildwood.net
 

One advantage of using the Lumix 3D lens on a non-Panasonic camera (or taping the contacts) is that you see the whole stereo image on the camera screen, in crossview no less. This lets you better frame the image. With the Panasonic camera, you only see what is on one of the lenses, and this can result in part of your subject being cropped off. You won’t know this until you remove the memory card and put the MPO on a separate device. 

Timo

On Sep 14, 2020, at 9:27 PM, George Themelis <gathemelis@...> wrote:

 I am lazy and I like to get MPO files from this lens.
 
George
 
 
From: Chuck
Sent: Monday, September 14, 2020 11:01 AM
Subject: Re: [Photo-3d] Panasonic Lumix 3d lens with Close-up Lenses vs Spacers Test
 

Linda and George, I did mean to mention that the +4 and +5 CL lenses yield MPO files that were pretty well aligned, whereas the lens with spacers required significant x axis alignment; thank you for bringing this up. Not a problem to quickly align them, but certainly there is some real estate of the image that will be lost. It's a good reason to have your camera aspect ratio set to wider than you may need if you are using the lens with spacers.


Re: 3D Macro & Panasonic FT-012 3D lens

Oktay
 

))

 Barry Aldous
Sep 13   

Yes, it did work out nicely – by chance.  The intention was to add a simple close-up but amongst my collection, I came across the Sony two portion wide-angle lens whereby removing the front segment, the remaining close-up portion provided the magnification I was looking for.  The Sony lens will be hard to find nowadays, but Neewer produce a similar lens.   

 

Neewer 58mm 0.43x Professional HD Wide Angle Lens with Macro Portion, available on eBay or from Amazon for around $30 to $40.  I use a couple of these lenses of a smaller size on my Fuji W3 camera.  The Macro FOV is around 1” (25mm). 

 

The attached images are representative of the Sony lens performance; the Neewer lens should be similar!

 

Barry

 

 

toggle quoted messageShow quoted text

 

 

 

 

 George Themelis
Sep 13   

Interesting…

 

Question about the two pictures with and without the WA attachment: These were taken with the unmodified Panasonic 3D lens?

 

George

 

 

toggle quoted messageShow quoted text

 

 

 

 

 George Themelis
Sep 13   

   )) I too have tried the combination of macro and wide angle lens.))  

I assume what you mean by wide angle lens is an add-on wide conversion lens.
I had used these type of lenses on my Belplasca camera about 20 years ago. Those lenses had very strong widening effect like 0.45X.
The 37.5 mm camera lenses turned into 17mm. The near object distance fell under 1.00m from more than 2.00 m of the Belplasca.

I have however never used these add-on lenses again because they degraded the image quality.

Again when SDM came into use at 2007 I used a more modest pair of lenses of 0.6X strength on my Canon A570 camera at it's 35 mm setting. Although not as bad bad as the previous experiment, the image quality was compromised.
Lenses at $20- $30 range have less than mediocre quality. I have heard about a $200 lens for Fujifilm (notW3) but I will not try it.

If however original wide or extra wide lenses are used without any adds-on I personally prefer them mostly to normal or tele lenses.

One interesting point I want to share here after working with different focal length lenses is as follows:

"The front object image size at the stereo window depends only upon the stereo base , if the same amount of on sensor deviation is to be maintained"

In other words, it doesn't matter what focal length of lenses you use, the size of the front object will always be the same if you keep the same stereo base.  Assumed that the infinity is included.

I have a habit of trying to obtain a 1mm deviation on a APS-C sensor, either when shooting macro, normal range or hypers, with any lens.
This rule produces 3D images that are generally comfortable for my eyes to view.

I will give two examples to demonstrate the idea about the stereo base and the front object size relation. 

(What I mean by front object is the nearest object at the limit, that does not cause any window violation.
Think of it's size as of a semi transparent object where the stereo window occurs,that doesn't block the background view and doesn't cause excessive deviation)

Focal Length   :  50mm
Stereo Base    :  70mm
On sensor deviation : 1mm
Sensor size 15.6X23.6mm

According to the above data and previous requirements the front object distance has to be  3.50m  =  3500mm

The full object size at this distance that the sensor covers will be:

3500/50 X 15.6X23.6mm = 1092mmX1652mm =      1.09mX1.65m

If we change the focal length from 50mm to 500mm the front object  with the maintained 1mm deviation has to be at 35m  =  35000mm.

The object size at this distance with the 500mm lens will again be:
      
35000/500 X sensor size =  1.9m x 1.65m.

In other words Stereo Base X Sensor size X 1mm .

This equation as it is, is only true because I have chosen a value of 1mm  as on sensor deviation.
However if other values like 1.2 , 1.5 or 2.5 can be chosen according to the sensor or film sizes. I choose 0.5mm for half frame images.

In all these cases the image size at the stereo window will again depend only on the stereo base , but this time will be multiplied with constants like 1.2 , 1.5 or 2.5 ... regardless of the focal lengths.

The big difference will be seen only in the perspective (Proportion between the size of the near and far objects) of the overall photograph.

If we go back to shooting Macro 3D and using add-on lenses I sometimes use positive (convex) lenses on my macro lenses ,if I am not using the  Variable magnification lens.
This makes me get closer to the objects and enables me to photograph smaller objects, but it doesn't widen the view.
Because the base is fixed, I don't use lenses with strong diopter , otherwise getting too close would cause excessive deviation.

Oktay 





 

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