32 bit per channel

Does the 32 bit per channel retain the sign if negative through processing, saving and then reading? It is advertized as floating point.
RONC

they are handled In the same way but in a linear version of the color space which makes a big difference. Search and learn about linear vs non - linear editing.
here's one link about it. http://mysite.verizon.net/spitzak/conversion/index.html
when reading the information in the above link have in mind that although the author talks about sRGB this is valid for all RGB color spaces which have non-linear gamma.

Similar Messages

Open a HDR 32 bits per channel file in photoshop elements.

Photoshop elements 4 with a hdr 32 bits per channel file in rgb mode opened and being converted to 8 bits using the built in hdr conversion dialog.

If you want to open RAW files with JavaScript I would recommend you record the process with ScriptingListener.plugin and use the resulting code.
It is possible with the Document Object Model, too, though.
To see the properties you can refer to ESTK Help > Object Model Viewer or Photoshop-CS6-JavaScript-Ref.pdf.
But if Muppet Mark’s advice applies maybe you can stick with AppleScript for this.

Why does PS show only 256 color Steps in a 16 Bit per channel workflow

Hi forum-members,
I am a bit confused about the way PS (CS5) acts with colors when editing pictures (RAW-converted) in RGB 16 bit per channel mode.
(please don't mind, if I am using some wrong English expressions here - since the PS at my work is German)
--> I would expect, that I would be able to select from a variety of 65535 (=16 Bit) color steps for every R - G or B channel ... bus PS still let's me select just 256 (=8 Bit) colors per channel (in the color palette on the right - also the "color pickup tool" will show 8 Bit values - the image certainly has 48 bit color depth).
Why am I asking? I will get a display capable of displaying 10 bit colors per channel in PS (NEC PA241W, ATI FirePro V5800, DisplayPort --> 30 Bit colors in Adobe PS) next week. And thus I need a better color resolution (which would mean: 16 Bit in PS) to avoid banding-effects.
Does anybody know why I can't select more colors here or how to change this behaviour?
Thank you very much in advance for your answers!
Blendax74

Hi Mark,
I already managed getting it to work :-)
First I did not succeed and I had to reinstall my system (because of driver issues of the remaining nVidia driver - my old card...).
After reinstallation and performing all necessary steps (as descripbed here: http://www.amd.com/us/Documents/48108-B_ATI_FirePro_Adobe_10-Bit_FAQ_R5_Final.pdf) I now get 30 Bit color ...
... which is AMAZING! You really can see the superior quality in almost every picture. Colors are very accurate and especially in dark shadows or skys you get a much better color rendition (now its indeed hard to see the color values of a color gradient anymore...).
Also have a look at this page related to 10 Bit output: http://www.amd.com/US/PRODUCTS/WORKSTATION/GRAPHICS/TOOLS/Pages/tools.aspx
And don't forget to download 'ramp.psd' from the page above - it's a good tool to proove wether everything has worked - if you're really running on 10 Bit you will not be able to see any banding within this picture (with 8 Bit you'll see a few vertical bars... moving up to 10 Bit will result in a smooth gradient)
As with every good news there are also some annoyances (at least till now, since I think it's "only" driver problems ... so there's a good chance, things will change further in the future):
- First of all: 10 Bit per channel ONLY works with the "professional grade" graphics cards (ATI FirePro), don't try this with a Radeon type card - it simply won't work. Similarly nVidia adds 10 Bit support on display port only on the QuadFX series (very expensive!). And I just can speak for ATI FirePro cards, since this is, what I am using here. Since the cards are physically identical to the "gamer" versions I think this is a way to promote their "professional grade" cards by the vendors. (BTW: all supported ATI cards are included in the pdf mentioned above)
- ATI: with the latest ATI driver (8.7xx) will loose some abilities (OS is Windows 7, 64 Bit): first, you will loose your Aero display features, since there's some background process running that prevents Win7 from using Aero. I guess, this could be due to a lack of alpha blending capability of the driver (or hardware?) when used in 10 Bit mode. If you don't need 10 Bit it can easily be turned on and off (+ Reboot), so that the effect is NIL in "normal" operation mode.
Second I recognized some trouble using certain apps: especially playing BluRay get'S trouble, for HDCP is not detected anymore - the BluRay player tells, that HDCP is not supported by the monitor. Again, the error is gone if switching back to 8 Bit mode.
- There's no way to select the "new" colors in Adobe PS (this is - in my opinion - a bug in Adobe PS and should be fixec someday). I "worked around" this by generating a 16 Bit RGB picture with a smooth gradient --> now you can pick even the finest colors using the pipette tool... which works fine.
After all: working with 10 Bit p.C. is a great pleasure! Of course you need 16 Bit RGB pictures (which are huge sized) to get the plus in color rendition - but I am well willing to pay the price - the images are just looking great (and the PA241W is the right tool to get there - a very well made monitor! Really worth the price - equally addictive like Eizo's GC series).
Hopefully I could help you - please don't hesitate to reply if you need further assistance!
Best regards
Roland
P.S.: Yes, this forum is WAY better than most on the net - very reliable and professional support! With support of "real" Adobe engineers - congratulations, Adobe! Very much appreciated.

Cannot Change From 16 to 8 bits per channel

I have never had this happen before: I cannot change the image I am editing from 16 to 8 bits per channel. Also odd is when I click on an adjustment layer I have created it is not highlighted in blue.
Thanks

See if your in quick mask mode.
Icon at the bottom of the toolbox and look at the top left of the document window and see if it says quick mask.

Codec that supports 16 & 32 bit per channel color?

What Quicktime 7 built-in codecs support hi-bit 16 & 32 bits per channel?

I assume you're working with image files.
The Animation codec supports 16 (Millions of Colors) and 32 (MIllions of Colors+). Great, fast encoding, high quality video.
Photo-JPEG uses 32 bit.
If you're only using a single frame your could use TIFF, PNG for 16 and 32 bit and Photo-JPEG for 32.
What is the goal of this project?

16 bit per channel images

I have been using BufferedImages for image processes but now I need to use color images that are 16 bits per channel. It doesn't look like I can use BufferedImage for this. Does anyone know how I can deal with this?
Basically what I need is
BufferedImage bi = BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
bi.getRGB(i, j)
bi.setRGB(i, j, color.getRGB())but with 16 bits per channel instead of 8.
Thanks

Hi,
That is not a limitation in full photoshop versions such as photoshop cs6/cc.
That's only a limitation in photoshop elements.

How can simple tools be used in 32-bit-per-channel images?

I have just begin working with HDR imaging. I am using it for what it was designed for. The subject of the photograph is a creek, looking straight across the creek to the far bank. The creek and the far bank are in bright sunlight. I was in woods, and deep shadow, when I took the photograph, and so the foreground is very dark. I converted the image to 32 bits/channel when merging it into HDR Pro, and used ACR to tone the final image. All of that worked very well.
But when I wanted to make some final little adjustments to the image, I found that I coulnd't! I wanted to select a color range, but the Color Range option was grayed out. I tried to use the magnetic lasso, but a message box popped up saying that I couldn't use that tool in 32-bit images.
I don't understand this limitation. 32 bits are supposed to be best for HDR images, but I can't use simple tools to edit the result?
And then when I switched to 16 bits, it seems I have to merge the channels first, but that loses all of the smart filters and other history that I had when working in 32 bits!
What is the best workflow for doing this? Is there something I am missing that would help?
Thanks very much!
RobR

Thanks again for helping me understand.
But I'm afraid I'm still a fair bit mystified. I'm trying to move away from why 32-bit is different from 16-bit and into what is the typical workflow for an HDR image where the goal is a realistic scene.
Are all edits typically done in ACR? Or do people accept the loss of the ability to use ACR when they switch to 16-bit mode to get the simple tools like selection, dodge/burn, and so on? It seems to me that the best of both worlds is to save the ACR-only version of the image and then convert to 16 bits and, once final editing is complete, to save that version separately? That way, should the ACR need to be adjusted, it could be done starting from the original settings, and only the 16-bit changes would need to be redone manually.
Thanks again.
RobR

Debanding from 10 bits to 8 bit per channel

if i have a video file with 10 bit/channel and i would like to encode that to a 8-Bit h264 file... and, of course i get a lot of banding. is there a tool or a plugin in premiere that does ordered dithering (10 To 8 Bit) such as a floyd steinberg algorithm (to get a better quality than by adding noise to blurr the banding)? thanks

The color setting is change from 32-bit color to 8-bit color?
Sometimes the Windows display is affected by compatibility settings in your Firefox shortcut, the icon you use to start Firefox. If you right-click that and choose Properties, then click over to the Compatibility tab, here is where you would indicate that you want Windows to look more primitive when using Firefox. For best results, UNCHECK everything on this tab (in other words, use all of the capabilities of Windows XP).
Was that it?

Does Mavericks add support for 10 bit per channel capable monitors

Just bought a HP Dreamcolor z27X monitor and have a new Mac Pro 6,1 and would like to know if my workstation supports the full capabilities of the monitor I just purchased.

JonB8305 wrote:
10.9.3 still doesn't add the 10 bit support.
That 'is a strong inhalation of breath' (forum will not allow s..ks). I have to say Apple are falling way behind in terms of supporting current media standards.
Not ony has 10bit video been around for quite some time now and is something used and supported in Adobe products in the Windows world, but Apple have also failed to support HD audio standards as used in Blu-Ray as an example and also look like failing to support H.265 as will be used for 4K video. (H.265 is twice as efficient as H.264 making it far more practical for the much bigger bandwidth requirements of 4K video.)
Now in the case of HD audio and H.265 it might be that there is no justification from a playback point of view from Apple's perspective, but what Apple appear to have forgotten is that Mac used to be the first choice for creating media files and if Apple don't support these standards then Macs can no longer be viewed as being suitable for media creation. Therefore this is a huge own goal on Apple's part as content creators would be precisely those people looking to buy new Mac Pro systems and Apple have at least designed the hardware to support 4K editing even if their software is increasingly too feeble to support the required standards.
Note: I have previously submitted an enhancement request to Apple regarding 10bit video support, and also H.265 support, both prior to Mavericks being released.
I have no problem with Apple not supporting Blu-Ray playback in the form of providing themselves a Blu-Ray player. However as above I feel they should make the Mac or more accurately OS X able to utilise the same formats as this will allow both content creation tools, and also the possibility for a third-party Blu-Ray player that supports HD audio formats. It is apparently possible for a Mac running Windows in Boot Camp to play these HD audio formats which makes sense since Macs use pretty much the same hardware as 'real' PCs so it is just OS X that is the problem. In fact the way things are going even Linux is moving ahead of OS X in terms of media format support.

Sample per channel and sample to read

Hello everybody
I am new in LABVIEW and I have some difficulties with something.
I don t know exactly what is the difference between the sample per channel et the sample to read. I believe knowing that the sample per channel is the size of the buffer which is more big than the sample rate but I don t know what is the sample to read.
I ve tested with different sample per channel and sample to read. Sometimes I have an error and sometimes know and I would like to know why. If you have any example for I understand better, it will be great.
I really need to understand this part for my project
Thank for your help
Romaric GIBERT
Solved!
Go to Solution.

Hi Roro,
As you mentioned, when acquiring continuous samples you can specify the sample buffer size by placing a value at the input "samples per channel" on the timing vi. The "number of samples per channel" input on the read vi which automatically names a control/constant with "samples to read" specifies the number of samples you wish to pull out of the buffer in one go when reading multiple (N) samples. This link may provide a bit more clarification. I have also attached a good example from the NI example finder which you may find useful to explore. I'm assuming you are using the DAQmx driver set so please let me know if this is not the case, but the same principles should apply either way.
This therefore means when sampling at a given rate, you need to ensure you are pulling data out in big enough 'chunks' to prevent the buffer from overflowing (which may well be causing the error you are seeing). Conversely if your sampling rate is slow and your read vi is having to wait for the number of samples to read you specified to be available, it may throw a timeout error. You can avoid this by either increasing your sampling rate, reducing your samples to read or increasing the timeout specified at the read vi input (-1 means it will wait indefinitely).
Let me know if this helps and how you get on.
All the best.
Paul
http://www.paulharris.engineering
Attachments:
Cont Acq&Graph Voltage-Int Clk.vi ‏27 KB

How can I control the bits per sample property in a TIF file when saving it?

When I save an image in the TIF format the bits per sample property is set to the amount of bits that are used by the image. In my case I can also have 'dark' images where not all bits are used. For this I would like to set the amount of bits instead of the automatic check.

Forte uses this as a default ...if you want the program to reference the directory the program actually resides in, you set that in the advanced properties for the source file that holds your 'main' in your program.
Hmmm, not at home now, but ...right click the source file (from forte explorer window) that holds your main and look throught the various properties. It is somewhere in there that you can assign a different path than forte's default.
If you ask me, the default should be the project dir.
If you get stuck and no one else answers you will have to wait till I go home for further detail, but I am sure you can find it if you look hard enough.

Speakers Rated at 100W at 8Ohms, Receiver 120W per Channel Question

I've read up on the latest midrange AV receivers and I've narrowed it down to two with a preference for one more than the other.
My preference is the Pioneer VSX-1019AH-K since it is very highly rated in terms of overall sound and video output to the TV. The only drawback is that it is rated at 120W per channel. The older Onkyo speakers that I have and would like to continue to use are only rated at 100W max power at 8Ohms.
Currently my second choice would be Onkyo's TX SR607 received decent reviews. It is only rated at 90W per channel which works for my speakers, but I've read that the video output to the TV is a little lackluster.
My question are:
1. Will I be blowing out speakers if I choose the Pioneer?
2. If you answered "yes" to number 1, does this happen under normal listening volumes or would I have to "turn it up to 11" in order to damage my underrated speakers?
I generally keep my volume level's down since I live in a townhouse community and I want my neighbors to like me.
Thanks, any input would be helpful.
Mike

You could possible blow them but you would have to turn them up pretty loud to start pushing 120W through them. The rated power is a little misleading, it may do 120watts but thats usually in 2 channel mode and rarely will go that high in full surround. Most surround sound recievers at 75watts or higher will do just fine. As for the SR607 it is quite a nice reciever for more info:
http://www.soundandvisionmag.com/features/3168/first-listen-dolby-pro-logic-iiz.html

Multiple channels acquisition and Number of samples per channel

Hi,
I'm a new labview user and I need some help in trasposing an old traditional NI-DAQ acquisition software in a NI-DAQ-mx one.
I followed the tutorial (#4342) but I found a problem with Analogue 2D DBL Multiple Channels Multiple Samples DAQmx Read Vi.
I'm trying to acquire 8 voltage signals from a NI-USB-6341 device. When the Number Of Samples Per Channel I set is below the number of channels (8), the software acquires only a number of channels equal to the number of samples per channel I set.
Is that a normal behaviour?
Thank you
Daniele

This is my code. The problem is the same with or without the code for the scan backlog indexing.
Tomorrow I will try with the code from the example.
Thank you
Daniele
Attachments:
acq code.jpg ‏119 KB

For another program (WASY WGeo) after the working with PS CC I need a picture with the right colours in the end with 256 colours in 8 bit per picture - I still got it until yesterday. I don´t know what I´ve done wrong in PS CC but I´m still working in mod

For another program (WASY WGeo) after the working with PS CC I need a picture with the right colours in the end with 256 colours in 8 bit per picture - I still got it until yesterday. I don´t know what I´ve done wrong in PS CC but I´m still working in mode with 8 bit RYB. I controlled my result with Irfan View: it´s a picture with 16,7 million colours and 56 bit pp.

Topic or subject titles should be clear, pertinent and concise so that individual users can tell at a glance if they can help or not.
That field is not for attempting to fit your entire question in there.
Please keep this in mind next time you post. Thank you.

Sample clock vs sample per channel per second

Referring to this link http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/dbe7ac32661bcf9b86256ac000682154?OpenDocument
What's the difference between sample clock and sample per channel per second? Looks the same to me.

The sample clock is the clock that sets the timebase for channel operations on the board. The samples per channel per second is the actual rate at which data can be transferred on a particular channel.
Alex A.
Applications Engineer

32 bit per channel

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