How to convert U32 matrix 8-bit grayscale image?
Good day to all,
I got a U32 512 * 512 data table of photomultiplier using the analog inputs of the DAQ card. My question is how to convert this matrix 32-bit to 8-bit monochrome image for display.
I tried the method in this post to convert grayscale image https://decibel.ni.com/content/docs/DOC-4155 table but the result resembles an outline rather than the actual image. I guess that's because their contribution to flatten Pixmap is 8 bits, but mine is 32-bit. I have a gamma correction to the scale of my data? But how?
I have attached the original image, which is a particle. I have also attached my labview code and the processed image. Thank you!
Then, you will likely make you own custom conversion then increasing the difference between the brightest and darkest. You could just do 4294963840 the zero and 4293967276 the max and scale up to 0-255
Tags: NI Software
I want to convert a black and white tif image to color. I opened it in Photoshop, change the color RGB/8 mode, saved as a psd, but when I use the dialog box to change color, I just get my color showing in grayscale. What is the correct way to proceed?
Create a solid color with mode "Lighter color" fill layer on top of the B & W image fusion.
Can someone please help me understand what rounding of diet or another algorithm is used when Photoshop reduced a 16-bit color 8-bit?
For example, the two colors (was and B) are the colours of 16-bit swatch taken directly from a file of the ACO:
A16 = (61603, 60948, 58982)
B16 = (58326, 57015, 52428)
Photoshop displays the values of "16-bit" (acutally 15 bits) as well:
A15 = (30802, 30474, 29491)
B15 = (29163, 28508, 26214)
It seems that the 15-bit values are the result of the division by two and rounded to the nearest integer.
With 8-bit, it's another story although:
A8 = (240, 237, 229)
B8 = (222, 227, 204)
Now, if we divide the 16-bit value by 256, the following:
A8_float = (240.6, 238,1, 230,4)
B8_float = (227,8, 222,7, 204.8)
It's a similar story during the allocation of the 15 by 128 bit values. No system rounding or truncation will get the same answers as Photoshop for 8 bit I see. What I can't work, it's how Photoshop calculates these figures. It's the division of integers, floating point division with rounding or truncation? I'm puzzled. Help, please.
-> range 32768-65535: (32768 * x + 32767) / 65535
Not quite dividing by 2, otherwise you miss the white point.
32768-> 255 range: (255 * x + 16384) / 32768
With the exception of dithering, it is all simple mathematics.
Have Adobe Photoshop 2.0 Deluxe. Try to convert it to JPG after change original JPG but it records as a "file". Discovered when I try and review on PC - working on a Mac G4 CSOS. Thoughts? Is there a way to convent these worms JPGs - have 1000 images and not able to publish it online or share.
Don't not recogizing/image format when I try and use the processing of multiple files tab (which is what I ideally want to do).
If you can find a version of the graphic converter that runs on your computer, which should be able to change the format of the batch.
I'm having a problem of conversion of a series of measures in a specific image. I have a matrix of size nxm (variable n and m), which contains the measurement data. My intention is to transform this matrix into an image to be analyzed later by external software. The trick, however, is that the image must be in the format 16-bit grayscale: grayscale for image processing and 16 bits to ensure that the resolution is not hindered.
I search the Web and still have not found a way of mapping somehow measured values I have in this matrix in pixels (16-bit grayscale ones, that is). I have access to the LabView Full Development System version, but not other toolboxes.
Does anyone have any suggestions?
I managed to make it work with the help of people on other forums. The key is to use the IMAQ driver, which gives the screws required to create pictures on 16-bit grayscale (only supported nicely by PNG format apparently).
The discussion on the other forum can be found here: http://stackoverflow.com/questions/11101420/structure-of-16-bit-grayscale-image-to-be-generated-in-c...
The IMAQ driver can be found here: http://search.ni.com/nisearch/app/main/p/bot/no/ap/tech/lang/en/pg/1/sn/catnav%3adu, n13% 3ahardwareDr...
I am writing a simple demonstration of Imaging for a camera to infrared imaging IR-160 of Solutions. I do not have IMAQ and unfortunately, there are no funds at this stage. (If the demo is successful, funds may become available.) I have LV 8.5.1, complete edition.
The camera creates 16-bit grayscale images, but the format of the image is not well documented. I know that the image is 160 pixels pixels wide x high 120, that gray values are stored as simple bytes (not ASCII), and that the data format is 16-bit signed words, the most significant byte first.
I attach two sample images (8 bits and 16 bits) and two live test.
I am able to read the image, but instead of shades of gray, everything is blue, and there are artifacts in the upper part of the image.
The camera also creates 8 bits to the pgm format images, but I have the same problems there. (The image of pgm opens well in for example, corel paintshop pro.).
What should I do so that the image appears in grayscale, then save it as a bitmap?
Thank you for your help.
I came across a rather curious problem. In a Visual inspection machine, we create 8-bit 16MPixel images. These are then calculated in single precision images. After processing the image display us certain types of images of result to the user. Here, the user can use the mouse on the image display and gets a reading of the current image of the sector where the mouse is currently positioned. If the image is RGB or U8, fine.
However, if the display holds one of the 32-bit grayscale images things become quite slow, by a factor of 5 to 10 about. Now I can see that 32-bit is quite a bit more than 8 bits, so I guess an increase in lap by a maximum factor of 4 times.
Since the images are large enough, an update takes about 90-100 ms with the 32-bit image, while the same action requires little more than 10 to 20 ms with U8 and same RGB. Because the movement of the mouse is caught by a structure of the event, all movements are processed and finally the tail to cause a blockage of the software that all these events are processed. This leads to ridiculously long 'freeze' time in the software, sometimes as long as 20 sec, as I saw through a log of the events has been implemented for this purpose.
Attached is an example of code that shows the unusually long processing time for overlays on SGL-images. If there is any suggestion, I would be happy to read them. Thanks in advance.
After in-depth discussions with German support NOR we have understood that it is not primarily the recovery action that consumes time, but rather my screen image update after each action of the event. As my goal was to provide the user with the most recent image information available as close to the position of the mouse as possible there is no another way to do it without compromising the goal that I have explained.
Several alternative ideas, we had (some don't work well) are briefly explained below:
- Use the property of the band of the art instead of creating an overlay
- PRO: ultra fast response because no update of the display image is needed, easy to implement
- Cons: Stationary, takes advanced band rest a while to appear, requires the user to stay in the same place on the screen for a while, the band faded unpredictable (in my test) and reappears only after leaving and returning to the display picture more keep the mouse pointer for a few seconds
- Use an extra (classic style) indicator string to display the desired text in the desired position
- PRO: also very fast
- CON: kind of hassle to the code, because it implies the correct calculation of the desired position of the channel indicator using the position of the window of the façade, the image appears indicator and the position of the mouse. Actually not hard I know, but nothing that see you with your mind on your dinner... You'll need a bunch of different reference types here to acquire the position necessary to window VI, indicator to display Image and mouse properties
- As 2 but without moving the indicator
- PRO: fast and easy to implement
- CON: not as easy to use since the indicator is stationary somewhere around the display of images and not at the mouse position.
- copy/typecast image SGL U8 image and move forward with overlays
- PRO: the response is improved to the level that I used
- CON: 'problem' with the update of the display image remains and therefore increases the response time the picture gets
- Use the property of the information string Image instead of creating an overlay
- PRO: would be faster than 1., since no required update picture
- k.o. - CON: property seems to be Read-Only, so no changes defined by the user of the text is possible
I guess my choice will be 2.
If anyone has other ideas on this subject, I will be always happy to hear about them.
- Use the property of the band of the art instead of creating an overlay
How to convert Windows 7 pro 64-bit to windows 7 pro 32 bit
You can't unless you are doing a new installation that would eliminate all of your files and installed programs.
So how to convert my image in RGB or 8 bits/channel so I can use the filter Gallery, please?
Menu image > Mode Check mark: RGB color and 8-bit/channel
The title tab on your image should then show RGB/8
I have scanned hundreds of old black and white negative using Vuescan to TIFF 16-bit grayscale. If I open in Photoshop CC2014 the tab indicates that they are a single 16-bit grayscale channel. But if I have Lightroom convert them into DNG and then open them in Photoshop, they appear as 48 bit RGB or three 16-bit RGB channels. The three channels are identical. What happens here? Is it only returned as a 48-bit RGB or the DNG image byPhotoshop to store the RGB image? The DNG format is not much bigger than the TIF, so it doesn't seem to be store 48 - bits of information. I lose all the data on your way to the DNG format with a scanning in grayscale?
Given that I can export the DNGs to a tif and it refers to a single channel 16-bit, I suppose I don't lose all the information, but I'd rather not use DNG for scans in grayscale? Or should I edit in Photoshop with the three RGB channels on and understand that I am change the grayscale channel should ever export back to tiff?
It seems at least that there is a gap in the rendering of the shades of gray DNG in Photoshop?
I think that the best way to answer here is to explain my own workflow.
I have to be a little brief: it's getting very late, and I start tomorrow a roadtrip of six weeks.
I do a lot of work with TIFF scanned, and it never occurred to me to convert to DNG.
I start with rough tonal corrections, noise reduction and retouching in PS and then import the image (with all the shadow and highlight details present) in LR.
Here, I'm very good tuning and capture sharpening, but sometimes the image must return to the PS for editing. I use then change the Original and the image opens grayscale in PS. After check-in PS, I click on the exclamation mark on the thumbnail and choose import disk settings and updates to images in LR.
Given that I find the release of LR sharpening unsuitable for scanned images (it's probably optimized for digital capture), I export a new LR tiff image, open it in PS, conversion of RGB to grayscale and use Smart Sharpen for output sharpening. I wish you that LR could export in grayscale, but I've learned to live with it. You could easily implement an action of conversion in levels of gray (and 8 bits) and use it regularly.
My knowledge of the technical aspects of the dng files is limited, but my impression is that they are files in grayscale, which explains the small size of the file.
The color is added in the process of deconvolution in LR.
I do not think that your workflow with convertin to DNG will affect the quality, so stick with it if you wish.
I gladly carry on this discussion, but since I'll be on the road, you answer could take some time.
I'm an artist. I have high quality TIFF images. When I convert TIFF to jpeg it make me color 8-bit automatically. (Forget about 32 bit - it does not in jpeg format that at all) The only way that I can return to the 16-bit color is to use the already broken file and bring it up to 16 bits. IT makes NO sense at all. Once the jpeg format is broken, how is the world supposed to convert back to the top. ?? So even though it says that you have converted the 16 - bit file, metadata is always about the 8-bit file.
In addition to en plus de tout all this confusion, an image, for example, in the case of so-called converted to 16-bit, gets a lot grow so even the original Tiff image. It looks good on the one hand and more exposed on the other. I guess that's throwing in resolution photoshop fake, I'm good?
I'm wasting my time with this 16-bit imaginary conversion?
Is it possible to take the original Tiff image and convert default 8-bit to 16-bit jpeg without value? I tried all sorts of things. I even asked my web guy. My web guy said only 8 bits is unexceptable for printing, same for the web.
Would this have something to do with my computer and the scanner?
I have the memory of 8 GB iMAC OS X 10.8.3 (3.2 GHz).
And I also have a capable graphic arts Epson Expression 10000XL scanner from scanniing to 48-bit color.
This color stuff is really important! This is IMPORTANT! I have files FINE art. I'm already losing so much quality with jpeg conversion. (which I am required to do for SmugMug, in addition to the compression of all my files of 50 MB or less)
Anyone who knows anything that could help me would be much appreciated.
First jpeg is 8-bit only it there's no way to register as a 16 or 32-bit jpg, just does not exist. Secondly people print in 8 bit all the time and most if not all web graphics are 8-bit because this is the only way to see because there is no 32-bit or 16-bit monitors to see. All pro monitors are 8-bit monitors.
If you like on the color range and want the range of colors that provide 16 and 32 bit, so why jpg? Jpg by his own nature throws of color just to compress, why it is popular on the web, because of its small file size not its quality. If you need 16 or 32-bit for what it is, it must be in a format that supports this color depth.
That being said, that a jpg to 8 bit image displays 16 million colors, 256 shades of red, 256 shades of green and 256 shades of blue.
Now, here's where I think your information bit is disabled. a jpg image is a 24-bit image that will produce 8-bit red, 8-bit, 8 bits of blue and green.
8, 16 and 32 channel are not total not the color information.
If the overall picture was of 8 bits, the image would be gayscale.
I just finished a bunch of graphics, using meshes almost entirely degraded to various levels of transparency. I used 'screen' for transparency mode, and each mesh point is a color to grayscale from white (bright spots) to black. This combination has reached a "brilliant effect"; black and gray colors appear as transparent when my drawings are shown against a form of color.
However, when I removed the colored background of form, the black and gray gradient points, originally published under different levels of transparency, white appear now as the pixels in grayscale. I'm really a beginner to Illustrator, but it surprised me that the colors of black and gray screen/gradient appears differently without background.
Attached is a simple example: a gradient mesh appears with transparency on a red background. But when we remove the red background, a black color appears. I would like to convert the different levels of black at different levels of alpha, as they appear when figure on red background
Is it possible to convert red for alpha, or grayscale pixels at different levels of white / transparent, without having to click on each gradient mesh point?
Effect on a background of origin. (this is the desired effect of transparency, only I wish it were the same thing without a static background color)
But when I slide on the background color, the gray pixels replace transparency. (I wanted to keep the transparency where the gray pixels in the gradient mesh screen)
Without a background color, any export in PNG will be black pixels, instead of transparent pixels. (I wanted to here the transparent pixels).
I am software developer, so the reason why I want to remove the background while preserving transparency gradient is then I'll be able to dynamically insert background running colors, or insert other images between the background color and gradient. Yes, it's true I could generate all combinations of colors, but in my case it would mean 36 export images from Adobe Illustrator, as opposed to the image export only 6. Package 36 images would also increase the space required by my compiled application.
Is it possible to keep the desired transparency effect, when you export for use against any background color?
You can try and apply as an opacity mask to a white circle.
I have a new version of osxe1 mac 10.11.2 capitan how to convert wma files into mp3 files that are on my external hard drive so my mac can copy on my iTunes
http://www.mediahuman.com/audio-converter/ - free. Says it does WMA. I have not used it so try at your own risk...
Switch (free basic version) - http://www.nch.com.au/switch/index.html - I don't know if this will make WMA
All2Mp3 - http://download.cnet.com/All2MP3/3000-2140_4-190407.html - limited success with WMA
Flip4mac - need version payware intermediary that allows you to convert. Use with Quicktime player. Flip4Mac - http://dynamic.telestream.net/downloads/download-flip4macwmv.asp?prodid=flip4mac wmv - the free version will allow QuickTime play, but not to convert Windows Media files.
After installation, a new component of Flip4Mac will appear in system preferences. Make sure that you set the boxes to make sure that it will play WMV files in Quicktime format.
VLC - not really a converter but will do a bit on the menu export. Can be slow to be converted and there will be a learning curve.
Explore online converters when you download a file in a format and download in another.
I do not know if your computer can run Audion 3 I think I used to use it to convert WMA.
I have a VI that captures an image in grayscale 8 bits (table 1 d of 1500 pixels). It has a 10-byte header that I remove and try to view it. The problem is that the image is considered to be a RGB. In addition, the saved image can be opened with an image viewer but is not correct. The pixel data is missing. How do I get this to display an image in 8-bit grayscale. I would also like to duplicate the 1 line of the image to about 50 lines data to make it easier to observe. using a loop and indexing the line only leaves the empty pxmao.
You are missing a color table entry to your flatten pixmap block. See extract vi I have attached. Also, I found that building the tables of a loop is a quick way to do it, Labview seems to pre-allocate memory correctly.
I have Vista Home Premium 32-bit.
How to convert files from 2003 (Windows Me) on my backup.
They are important. Some have extensions wdb or xlr. I have Office Word Viewer and Open Office.org, but I can't find a way.
Does anyone know how to open these files?
Extension WDB is works database file.
XLR files are spreadsheets or graphs created within the 'Œuvres', XLR files are totally unwearable in Microsoft Excel, however, Excel spreadsheets are not totally compatible with works and some properties of the cell or characteristic data may be lost when you import Excel spreadsheets in the works.
You need their respective requests to open the file or you could get some third party tools using your favorite search engine, which will help you convert WDB file in word (DOC) format and XLR files to import to Excel.
I hope this helps.
Bindu S - Microsoft Support
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