How to convert an image to grayscale 8 bits unsigned 2D table

Similar Questions

• Convert an image to grayscale 10-bit color

  Hi all

  I am a programmer of experience of labview 8 years, but new to the procession of the image or NOR-Vision. And now, I came to a problem with the conversion of the image.

  I have an image acquisition card that acquires 1 k * 1 k 10-bit grayscale image, I saved the image acquired in *.raw (binary) format, and now I have to convert these images to bmp (jpeg, png, or diff) format. When I try to use the VI "Imaq save 2", I got an error saying something like "unsupported image type. After searching this forum, it seems that if I have to use an image of color type save as bmp format, but to receive my 10-bit RAW files, I first need to create an image in grayscale U16. So, how can I solve this problem?

  Thanks for your suggestions!

  My guess: you're referring to the 'writing IMAQ 2.VI of the file' as I do not know everything "IMAQ save...". Screw.

  The 'writing IMAQ 2.VI of the file' does not support writing 16-bit BMP.  You can take this information among image types supported this VI, see here.  Look at the pictures above, the designation of VI: 'IMAQ writing file BMP 2' says that he accepts "U8" and "RGB32 image types.

  Proposal: Write a PNG image.

• Convert an image to grayscale in C

  Hello. I want to convert an image, acquired by webcam, grayscale in C, using myRIO. I have a webcam connected to myRIO, working on simple image acquisition, but I can't find a way to convert the image to grayscale. I get no error to the building or a run Configuration.

  It's the image is written in the file: (black)

  

  The code is here:

  
  
  
  
  #include "MyRio.h".
  
  
  
  
  #define CAM_NAME    'cam1 '.
  
  #define CAPTURED_IMAGE_PATH     ".» "/ capturedImage4.png".
  #define WINDOW_NUMBER    15    / / number of Image display window
  
  #define IMAQDX_ERROR_MESSAGE_LENGTH    256
  bool Log_Vision_Error (int valeurerreur);
  
  bool Log_Imaqdx_Error (IMAQdxError valeurerreur);
  int main (int argc, char * argv)
  
  {
  
  #if 1
  
      Status of NiFpga_Status;
  printf ("\n + ImageAcquisitionAndDisplayExample \n");
  Image * captureImage = NULL;
  
      	Image * processedImage;
  Session IMAQdxSession = 0;
  
      /*
  
       * Open the myRIO NiFpga Session.
  
       * This function MUST be called before all other functions. After this call
  
       * is complete the myRIO target will be ready to be used.
  
       */
  
      status = MyRio_Open();
  
      If (MyRio_IsNotSuccess (status))
  
      {
  
          return the situation;
  
      }
  Create the Image buffer
  
      	captureImage = imaqCreateImage (IMAQ_IMAGE_HSL, 0);
  
      	processedImage = imaqCreateImage (IMAQ_IMAGE_HSL, 0);
  
      	imaqSetImageSize (processedImage, 640, 480);
  Log on to the selected camera
  
      	If (Log_Imaqdx_Error (IMAQdxOpenCamera (CAM_NAME, IMAQdxCameraControlModeController, & session)))
  
      		Goto cleanup;
  Acquire an image
  
      	If (Log_Imaqdx_Error (IMAQdxSnap (session, captureImage)))
  
      		Goto cleanup;
  Process the image Captured here.
  
      	Grayscale
  If (Log_Imaqdx_Error (imaqExtractColorPlanes (captureImage, 1, NULL, NULL, processedImage)))
  
      	    		Goto cleanup;
  Write the image captured in the file
  
      	Log_Vision_Error (imaqWriteVisionFile (processedImage, CAPTURED_IMAGE_PATH, NULL));
  cleaning:
  
      	Log out of camera
  
      	IMAQdxCloseCamera (session);
  Have the image
  
      	imaqDispose (captureImage);
  
      	imaqDispose (processedImage);
  printf ("\n--ImageAcquisitionAndDisplayExample \n");
  
      	return 0;
  status = MyRio_Close();
  
  #endif
  
  }
  bool Log_Imaqdx_Error (IMAQdxError valeurerreur)
  
      {
  
      	If {(valeurerreur)
  
      		errorText tank [IMAQDX_ERROR_MESSAGE_LENGTH];
  
      		IMAQdxGetErrorString (valeurerreur, errorText, IMAQDX_ERROR_MESSAGE_LENGTH);
  
      		printf ("%s \n", errorText);
  
      		Returns true;
  
      	}
  
      	Returns false;
  
      }
  Print the VISION Error Message
  
      bool Log_Vision_Error (int valeurerreur)
  
      {
  
      	If ((valeurerreur! = TRUE) & (imaqGetLastError()! = ERR_SUCCESS)) {}
  
      		char * tempErrorText = imaqGetErrorText (imaqGetLastError ());
  
      		printf ("%s \n", tempErrorText);
  
      		imaqDispose (tempErrorText);
  
      		Returns true;
  
      	}
  
      	Returns false;
  
      }

  BoKnows wrote:

  Does not include the LabVIEW code you posted anything to send the image to a file.  I'm curious to know if we run out of questions at this point.  If we comment out code to convert grayscale, writing original image to the file properly or you didn't post in events where you say it works?

  I guess that LabVIEW code, you have published work to complete the task.  It's a little different from what I posted.  But I am not too concerned about that as long as things are working.

  The code works now. The problem is there:

  If (Log_Imaqdx_Error(imaqExtractColorPlanes (captureImage, 1, NULL, NULL, processedImage)))
  
  

  Instead of Log_Imaqdx_Error, it must be Log_Vision_Error.

• How to convert an image large parts of images? means split a jpg to several sub vivid image. (this sub image can partner in this big picture)

  Hi friends...

  How to convert an image large parts of images? means split a jpg to several sub vivid image. (this subimages can partner in this great image) any help

  

  In the example, I created both images and them added together, and the reverse can be done in the same way.

• How to convert an image from 72 dpi to 300 dpi image?

  How to convert an image from 72 dpi to 300 dpi image?

  Ctrl Alt of the image size I have (Cmd Opt i)

  Uncheck resampling

  Change the resolution

• How to print the image in grayscale in the rich black?

  How to print the image in grayscale as PDF as black process only instead of CMYK?  I'm on FM10

  Ed,

  What file format you save the image in? It is important, as indicated by error. If you left it as a PSD, then FM performs a conversion to RGB. A TIFF or EPS file properly remains blank (i.e. on the plate of K). Other formats, such as PNG to grayscale are actually indexed color and solve RGB when FM creates the PDF file in the presence of plates of Spot and where the components are mapped to the CMY plates also.

  Here is a sample generated using SaveAsPDF with the CMYK option with the same 'gray levels' file saved in the format PNG, TIF and EPS in Photoshop (Note how the PNG isn't all there, on the plate K):

  

• How to convert specific images on my Clipboard to text once paste the picture on my .pdf document?

  Hey Adobe experts, I could really use your help.

  I have some screenshots of school I pasted on OneNote. These screenshots have a large amount of text that I could use. I created a large .pDF document where I saved my notes and text. Now - how to convert the SPECIFIC images that I stick to the text document? I use the word 'Specific' here because I know I can run OCR on a blank page without any text. But how to do OCR on an image

  It automatically happened a couple of times when I tried to save the document immediately after I pasted the image - when I was under "Edit PDF" I was able to edit and change the fonts of the text. But how can I do this at will? Is there a special button somewhere?

  P.S. I already tried to OCR - but it's only limited to pages without already "renderable text".

  I use Adobe Acrobat Pro DC; 8.1 Windows machine

  Hi SinNombre,

  If you are referring to perform OCR on a page with the image and the renderable text, it is not supported. However, you can use the following workaround for the same thing:

  1. print the PDF document to Microsoft XPS Document Writer or accessing the file-> export to...-> Image-> (an example of TIFF or PNG format)

  2 convert the output created in PDF format. This PDF file contains all the texts and images in the form of images.

  3. run the OCR on this PDF.

  This should solve your problem

• How to convert JPEG image and write to TCP

  I need to convert an image in JPEG format and write it on a TCP port, rather than in a file.

  I thought I could change "Write JPEG File.vi", but it is password protected.

  Thank you

  If you use IMAQ Vision, so you can convert your image to a compressed string:

  Compress an IMAQ Image without saving it to disk

  This topic can also be interesting for you: Decoding JPEG String

  Andrey.

• How to convert between image photoshop mix on iPad iOS 9 pro to a jpeg image?

  greetings... I use an I pad pro to edit in camera to send to my eBay store. I use photoshop mixture cut base and smart tool and I would like to convert the image background transparent png file to a jpeg white background... What is the simple solution for this? Thank you!

  Hi kikis32806680 !

  When you press "Share" > "More" > save on film. That should give you a .jpg file. Let me know if it works for you!

  -Kathleen

• How to convert photo/image in text

  Hello

  I want to scan (binary 1 or 0) of any photo/image. After the digitization of photos/images, I want to write to a text file.

  Please advice me how I can do.

  Thank you very much

  Azim

  Hello azeem,

  I recommend you have a look at our examples of Developer Zone and NO community because they have several communications that relate to what you're trying to do.

  Here are some examples I found simply searching "Images to Binary.

  [1] acquire Images from the camera and save them in a binary file

  https://decibel.NI.com/content/docs/doc-20952

  [2] convert Image into binary Image

  https://decibel.NI.com/content/docs/doc-8735

  [3] image streaming to a binary file (with delay)

  http://www.NI.com/white-paper/14173/en

• How to convert the image to CMYK (from any format)?

  It seems that it should be simple enough.

  I tried to reverse engineer a function of her "warn if RGB.jsx" found: Photoshop CC 2015 / settings presets/Scripts/Warn if / applications/Adobe RGB.jsx

  in this file, open the picture in Photoshop is taken and converted to RGB.

  Well that's exactly what I want to do, except the other way around.

  How can I write code that would take my 'current image' and change it to CMYK, as if I had to go in photoshop (GUI) Edit > convert to profile... > and select CMYK ball under "Destination space".

  I need this in a function for another script I have.

  I'm going beyond what I (with my poor attempt of reverse engineering of function "Warn if RGB.jsx" in place.

  Thank you. I really could use the help, and I think it should be pretty simple.

  try {
    var data = GetDataFromDocument( activeDocument );
    if ('eps' == data.extension.toLowerCase()) {
    //convert to cmyk
    Switch();
    }
    else{
    //run code to square up images
    toSquare();
    }
  }
  catch( e ) {
    alert(e);
  }
  
  
  
  
  
  
  //FUNCTIONS
  ///////////////////////////////////////////////
  ///////////////////////////////////////////////
  
  
  function toSquare(){
    var savedRuler= app.preferences.rulerUnits;
    app.preferences.rulerUnits = Units.PIXELS;
    var w = app.activeDocument.width;
    var h = app.activeDocument.height;
    if(w>h) app.activeDocument.resizeCanvas (w, w, AnchorPosition.MIDDLECENTER);
    if(w<h) app.activeDocument.resizeCanvas (h, h, AnchorPosition.MIDDLECENTER);
    //if w==h already square
    app.preferences.rulerUnits = savedRuler;
  }
  
  
  ///////////////////////////////////////////////
  
  
  function GetDataFromDocument( inDocument ) {
    var data = new Object();
    var fullPathStr = inDocument.fullName.toString();
    var lastDot = fullPathStr.lastIndexOf( "." );
    var fileNameNoPath = fullPathStr.substr( 0, lastDot );
    data.extension = fullPathStr.substr( lastDot + 1, fullPathStr.length );
    var lastSlash = fullPathStr.lastIndexOf( "/" );
    data.fileName = fileNameNoPath.substr( lastSlash + 1, fileNameNoPath.length );
    data.folder = fileNameNoPath.substr( 0, lastSlash );
    data.fileType = inDocument.fullName.type;
    return data;
  }
  
  
  ///////////////////////////////////////////////
  
  
  function Switch() {
    var eventModeChange = stringIDToTypeID( "8cba8cd6-cb66-11d1-bc43-0060b0a13dc4" );
    var descSource = new ActionDescriptor();
    var keySourceMode = charIDToTypeID( "SrcM" );
    var list = new ActionList();
    var keyCondition = charIDToTypeID( "Cndn" );
    var keyBitmap = charIDToTypeID( "UBtm" );
    var keyGrayscale = charIDToTypeID( "UGry" );
    var keyDuotone = charIDToTypeID( "UDtn" );
    var keyIndex = charIDToTypeID( "UInd" );
    var keyRGB = charIDToTypeID( "URGB" );
    var keyCMYK = charIDToTypeID( "UCMY" );
    var keyLab = charIDToTypeID( "ULab" );
    var keyMultichannel = charIDToTypeID( "UMlt" );
    list.putEnumerated( keyCondition, keyBitmap );
    list.putEnumerated( keyCondition, keyGrayscale );
    list.putEnumerated( keyCondition, keyDuotone );
    list.putEnumerated( keyCondition, keyIndex );
    list.putEnumerated( keyCondition, keyRGB );
    list.putEnumerated( keyCondition, keyCMYK );
    list.putEnumerated( keyCondition, keyLab );
    list.putEnumerated( keyCondition, keyMultichannel );
    descSource.putList( keySourceMode, list );
    var keyDestination = charIDToTypeID( "DstM" );
    var descDest = new ActionDescriptor();
    var keyCMYK = charIDToTypeID( "UCMY" );
    descSource.putObject( keyDestination, keyRGB, descDest );
    executeAction( eventModeChange, descSource, DialogModes.NO );
  }
  
  
  //////////////////////////////////////////////
  //////////////////////////////////////////////
  

  Seems to be the engine of the forum swallow the spaces located at random when going advanced editor mode:

  The exact line is:

  var idT = charIDToTypeID( "T   " );
  

  There are 3 spaces after the T.

• How to convert an image with ink drawn hand of layers?

  I have a drawn image of hand in jpg of the black lines on white background (similar to the linework) and I want to convert the black lines to a layer.

  How can I do this?

  https://forums.Adobe.com/message/6079459#6079459#6079459 http://www.mouseprints.NET/old/DPR/KillWhiteActions.zip Re: perfectly to remove white background  

  Photoshop script black Raster to Vector

• CS6 Illustrator: How to convert a mesh (white-> grayscale) (white-> alpha)?

  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.

• How can convert 2D image color table

  Hello

  I have a 2d chart and you want to convert into an image.
  but I want a color photo of the Fund.

  that the color of each element corresponds to the picture of the attachment.
  for example if the item in the 2d array 10 color is red.
  and if the item in the table 2d is - 15 color is blue

  Thank you.

  

  
  

• How to convert a number to a 10-bit array that will go in an external DAC (AD7533)

  Hello

  This here is my situation.  I'm using with LABVIEW to program a CPU in the following way:

  1 Laview calculates the values of a sine wave, according to the number of loop iteration. (i.e. generating a value of the sine at different frequencies).

  2. it is adjusted between-/ + 1.

  3. I connect an array of digital output ports to an external, independent, four quadrants, 10 - bit DAC. The part is AD7533, and I hope I can use it in bipolar configuration.

  My question is, how do I convert the number of sine wave (or triangal, sqr, etc.) in a table of values of T/F can I stream through my DAC and output a sine wave signal?

  I tried number Boolean array with the calculated value of sinus, but do not give me any bits of hard.

  All suggestions greatly apprec.

  RTom

  Post what you have done so far.  Are starting you with a a U16 or I16 whole bit (or more)?  How do you do the scaling between +/-1 and an integer.  It should be just a matter of using the table number of Boolean and then using a subset of the table to reduce up to 10 items boolean.  If you are starting with an integer I16, it may be a matter of taking the element of corresponding table of the sign bit and the 9 elements that correspond to the less significant bits, to put together to make an array of 10 elements.