How to resize pixels in Vision.
I use the Vision Tools for Ultrasound-Imaging. I have the data in a 2D-Array (220x2502). In x-direction one pixel equals 128 us and in y-direction 1 pixel equals 6.15 us. If I display this picture, I get a very long one, because I don't know, how to tell IMAQ Vision that one pixel in y-direction has to be smaller. Can somebody tell me, how to do this? Thanks in advance.
You can't display an image without using square pixels. If you want to make this image contain square pixels, you are going to have to resample the image.
A quick method is to use IMAQ Extract to reduce the y resolution by an integer factor. A factor of 21 would give you roughly square pixels.
Another possibility is duplicating the x pixels using IMAQ Expand, once again using the factor of 21.
A third possibility would be a combination of the two. Try Extracting with a y factor of 7, then Expanding with an x factor of 3.
You could also use IMAQ Resample to do all this in a single step, and it can handle non-integer factors. Just figure out what the size (resolution) of the final image should be, and it will interpolate to give you what you want.
Bruce
Bruce Ammons
Ammons Engineering
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How can I in IMAQ Vision know to which blob a pixel belongs to?
Hi,
How can I in IMAQ Vision know to which blob (particle) a pixel belongs to?
I use IMAQ Complexmeasure and Complexparticle to get data about every particle in the image and then use this data (position, length and direction) to see if two particles "belong to each other". I want to start from one particle and from the data (position, length and direction) find a search area and in that area look for pixels (binary image), if I find one I want to know to which blob that pixel belongs to. (Programmatically) How can I do that?
Deeper explanation: The image I send is just a small part of a bigger image. As you can see there are a lot of streaks on the image, they are generated by small particle
s moving in the air. I use a long exposure time and have a chopper in front of the camera that will generate a short streak, a middle long streak and a long streak. By doing this I can see how the air is moving around in a room. As you can see I must know which streaks are generated by the same particle. As I said earlier I use IMAQ Complexmeasure and Complexparticle to get data about every blob (streak in this case) in the image and then use this data (position, length and direction) to see if two streaks "belong to each other". I start from one streak and from that streaks data (position, length and direction) I can find a search area and in that area look for pixels ( hopefully belonging to a streak generated by the same particle ), if I find a pixel I want to know to which streak (blob) that pixel belongs to so I can look at this new streaks data (length, direction) to verify if these two streaks are generated by the same particle. So my questions are:
How can I see to which strea
k (blob) an individual pixel belongs to? (programmatically)
What is the best way to create a search area, ROI? (programmatically)
What is the best way to look for a pixel in the search area, IMAQ GetPixelValue? (programmatically)
Thanks
Pelle
Attachments:
streak.jpg 6 KB
scan0001.PNG 66 KBPelle,
This is an interesting project. It will be difficult to use blob processing, because there are a large number of intersecting paths.
A few ideas to start with:
For each particle, the path is essentially the same brightness. I would start with white and gradually decrease the threshold level to locate the different blobs.
Also, for each particle, the alignment is roughly the same. I would only consider blobs that have about the same orientation of the long axis. They don't seem to make sudden right angle turns.
I would search by doing a particle analysis, select a particle and search for related particles by comparing the centroid of nearby particles to see if they fall in the area +/- 15 degrees from the long axis orientation of the
particle. You should be able to locate a best choice at each end of the particle.
Bruce
Bruce Ammons
Ammons Engineering -
Guys, i want to ask on how to resize the images into 1200 pixels wide?
Guys, i want to ask on how to resize the images into 1200 pixels wide, how to do it? and what are the step by steps on doing that? thank you!!!
See this link: http://forums.adobe.com/docs/DOC-3691
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How to resize a photo from CameraUI?
Hi there,
i really need som help here. I cant seem understand how to resize an still image taken with the camera. Here are the code so far(also with the upload part). I just need a thumbnail to be uploaded to the server, not the HQ-image. Any ideas?
Simple AIR for iOS Package for selecting a cameraroll photo or taking a photo and processing it.
Copyright 2012 FIZIX Digital Agency
http://www.fizixstudios.com
For more information see the tutorial at:
http://www.fizixstudios.com/labs/do/view/id/air-ios-camera-and-uploading-photos
Notes:
This is a barebones script and is as generic as possible. The upload process is very basic,
the tutorial linked above gives information on how to post the image along with data to
your PHP script.
The PHP script will collect as $_FILES['Filedata'];
import flash.display.MovieClip;
import flash.events.MouseEvent;
import flash.events.TouchEvent;
import flash.ui.Multitouch;
import flash.ui.MultitouchInputMode;
import flash.media.Camera;
import flash.media.CameraUI;
import flash.media.CameraRoll;
import flash.media.MediaPromise;
import flash.media.MediaType;
import flash.events.MediaEvent;
import flash.events.Event;
import flash.events.ErrorEvent;
import flash.utils.IDataInput;
import flash.events.IEventDispatcher;
import flash.events.IOErrorEvent;
import flash.utils.ByteArray;
import flash.filesystem.File;
import flash.filesystem.FileMode;
import flash.filesystem.FileStream;
import flash.errors.EOFError;
import flash.net.URLRequest;
import flash.net.URLVariables;
import flash.net.URLRequestMethod;
// Define properties
var cameraRoll:CameraRoll = new CameraRoll(); // For Camera Roll
var cameraUI:CameraUI = new CameraUI(); // For Taking a Photo
var dataSource:IDataInput; // Data Source
var tempDir; // Our temporary directory
CameraTest() ;
function CameraTest()
Multitouch.inputMode = MultitouchInputMode.TOUCH_POINT;
// Start the home screen
startHomeScreen();
// =================================================================================
// startHomeScreen
// =================================================================================
function startHomeScreen()
trace("Main Screen Initialized");
// Add main screen event listeners
if(Multitouch.supportsGestureEvents)
mainScreen.startCamera.addEventListener(TouchEvent.TOUCH_TAP, initCamera);
mainScreen.startCameraRoll.addEventListener(TouchEvent.TOUCH_TAP, initCameraRoll);
else
mainScreen.startCamera.addEventListener(MouseEvent.CLICK, initCamera);
mainScreen.startCameraRoll.addEventListener(MouseEvent.CLICK, initCameraRoll);
// =================================================================================
// initCamera
// =================================================================================
function initCamera(evt:Event):void
trace("Starting Camera");
if( CameraUI.isSupported )
cameraUI.addEventListener(MediaEvent.COMPLETE, imageSelected);
cameraUI.addEventListener(Event.CANCEL, browseCancelled);
cameraUI.addEventListener(ErrorEvent.ERROR, mediaError);
cameraUI.launch(MediaType.IMAGE);
else
mainScreen.feedbackText.text = "This device does not support Camera functions.";
// =================================================================================
// initCameraRoll
// =================================================================================
function initCameraRoll(evt:Event):void
trace("Opening Camera Roll");
if(CameraRoll.supportsBrowseForImage)
mainScreen.feedbackText.text = "Opening Camera Roll.";
// Add event listeners for camera roll events
cameraRoll.addEventListener(MediaEvent.SELECT, imageSelected);
cameraRoll.addEventListener(Event.CANCEL, browseCancelled);
cameraRoll.addEventListener(ErrorEvent.ERROR, mediaError);
// Open up the camera roll
cameraRoll.browseForImage();
else
mainScreen.feedbackText.text = "This device does not support CameraRoll functions.";
// =================================================================================
// imageSelected
// =================================================================================
function imageSelected(evt:MediaEvent):void
mainScreen.feedbackText.text = "Image Selected";
// Create a new imagePromise
var imagePromise:MediaPromise = evt.data;
// Open our data source
dataSource = imagePromise.open();
if(imagePromise.isAsync )
mainScreen.feedbackText.text += "Asynchronous Mode Media Promise.";
var eventSource:IEventDispatcher = dataSource as IEventDispatcher;
eventSource.addEventListener( Event.COMPLETE, onMediaLoaded );
else
mainScreen.feedbackText.text += "Synchronous Mode Media Promise.";
readMediaData();
// =================================================================================
// browseCancelled
// =================================================================================
function browseCancelled(event:Event):void
mainScreen.feedbackText.text = "Browse CameraRoll Cancelled";
// =================================================================================
// mediaError
// =================================================================================
function mediaError(event:Event):void
mainScreen.feedbackText.text = "There was an error";
// =================================================================================
// onMediaLoaded
// =================================================================================
function onMediaLoaded( event:Event ):void
mainScreen.feedbackText.text += "Image Loaded.";
readMediaData();
// =================================================================================
// readMediaData
// =================================================================================
function readMediaData():void
mainScreen.feedbackText.text += "Reading Image Data.";
var imageBytes:ByteArray = new ByteArray();
dataSource.readBytes( imageBytes );
tempDir = File.createTempDirectory();
// Set the userURL
var serverURL:String = "http://www.hidden_in_this_example.com/upload.php";
// Get the date and create an image name
var now:Date = new Date();
var filename:String = "IMG" + now.fullYear + now.month + now.day + now.hours + now.minutes + now.seconds;
// Create the temp file
var temp:File = tempDir.resolvePath(filename);
// Create a new FileStream
var stream:FileStream = new FileStream();
stream.open(temp, FileMode.WRITE);
stream.writeBytes(imageBytes);
stream.close();
// Add event listeners for progress
temp.addEventListener(Event.COMPLETE, uploadComplete);
temp.addEventListener(IOErrorEvent.IO_ERROR, ioError);
// Try to upload the file
try
mainScreen.feedbackText.text += "Uploading File";
//temp.upload(new URLRequest(serverURL), "Filedata");
// We need to use URLVariables
var params:URLVariables = new URLVariables();
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params.userid = "1234567";
// Create a new URLRequest
var request:URLRequest = new URLRequest(serverURL);
// Set the request method to POST (as opposed to GET)
request.method = URLRequestMethod.POST;
// Put our parameters into request.data
request.data = params;
// Perform the upload
temp.upload(request, "Filedata");
catch( e:Error )
trace(e);
mainScreen.feedbackText.text += "Error Uploading File: " + e;
removeTempDir();
// =================================================================================
// removeTempDir
// =================================================================================
function removeTempDir():void
tempDir.deleteDirectory(true);
tempDir = null;
// ==================================================================================
// uploadComplete()
// ==================================================================================
function uploadComplete(event:Event):void
mainScreen.feedbackText.text += "Upload Complete";
// ==================================================================================
// ioError()
// ==================================================================================
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mainScreen.feedbackText.text += "Unable to process photo";1. Create a BitmapData of the correct size of the full image
2. Use BitmapData.setPixels to create pixel data from your byteArray
3. Make a new Bitmap, Bitmap.bitmapData = BitmapData
4. Create a matrix with the correct scaling factors for your thumbnail
5. Create a new BitmapData the size of your thumb
6. Use BitmapData.draw to draw your image data from the Bitmap to the new BitmapData with the scaling matrix
7. Use BitmapData.getPixels to create a bytearray from your thumb BitmapData
8. save it
You'll have to look up the AS3 reference to see how all these methods work. -
How to resize image on my mac?
How to resize image on my mac?
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How to resize project without losing the image resolution?
I am trying to resize a project that recorded in 1271 x 768
px to 800 x 483 px. I did it by clicked 'Project' > 'Resize
Project...'. But after resize, the resolution of the movie is not
clear, became blur. How to resize the project so that I'll have
clearer movie? Thanks.Hi obtis and welcome to our community
Unfortunately, there is little you may do to avoid this. The
best way to avoid it is to simply record initially at the size you
need so you don't have to use the Resize function.
Here's the deal. Captivate stores images in the project as
bitmapped images. Otherwise known as "raster" images. Basically
they are a mosaic that comprises the picture. Initially, all is
well and is crystal clear. But when you scale down a raster or
bitmapped image, you are simply moving all the picture elements
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Hopefully this helps... Rick -
How to resize a layer or picture
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1. How to make an area of a picture or layer transparent?
2. How to resize a layer or .jpg picture or any picture that can be edited by PS Elements 12
Tried to include the talk balloon file but it failed because of the content. What is wrong with " Hmmmmmm"
"I think this one fits". It is a psd file.
Bill1. How to make an area of a picture or layer transparent?
Select the area where you want it to be transparent and use the Eraser of various types from the tool bar. there are essentially three types: Eraser Tool, Magic Eraser and Background Eraser. The selection tool has also many types.
How to resize a layer or .jpg picture or any picture that can be edited by PS Elements 12
To resize any picture you simply go to:
Image >> Resize
Select what ever you want to resize the canvas or the Image. If you are in PSD file then canvas resize might be appropriate but my answer is pretty general to give you the necessary options. there is also the "Scale" of the image so you are spoilt for choices here.
You just need to be careful not to0 degrade the image so much by resizing because pixels per inch changes and lower the amount per inch degrades the image; This is what happens when you increase the size while reverse is the case if you resize it downwards. -
I can't figure out how to resize my picture for my home or lock screens.
I can't figure out how to resize my picture for my home or lock screens. It shouldn't be his difficult. Any suggestions? I'm running the latest software. Thanks.
whichever app store you are connecting to, hyou need a credit card with an address in that country. Also, itunes gift cards must be in local currency too.
If you are in japan, you need to use the japan app store -
How to resize a jpg/gif file to a fix size using jimi ?
I have search from the web and didn't find any example on doing this.
Can any one give example on how to resize a jpg image. let say 120x240
to a fixed size 40x40 ?
thank youHi.
When you got that image in form of a file, just load it and invoke the image's getScaledInstance(...)-method.
Here's how it could work:
import java.awt.*;
public class Test {
public static void main(String[] argv) {
// define where the image comes from:
URL toImage = new URL("file:/C:/test.jpg"); // or the like
// get the image:
Image image = Toolkit.getDefaultToolkit().createImage(toImage);
// scale the image to target size (40x40 here):
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}HTH & cheers,
kelysar -
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stuart13 wrote:
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Yeah..... I know that I want to know how to resize a resolution the 1280 x 720 doesn't show up right it's making everything go off the sides so I can't see everything on my desktop in windows my nvidia control panel would allow me to resize my monitor to fit any resolution i want to know how to do that on a mac
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I came across a pre-existing pdf file of an old book of genealogy. According to the front pages, it was 'Digitized by Microsoft', so I know nothing on how it was generated. Total pages are in excess of 1,100.
In viewing the pages, they are reflected as 2 pages to a view; not the book opened with the spine in the middle, but images side by side ... in numerical order ... and they appear as a normal sized 2 page for that view. When I print out a page, by number, it also prints out in a normal size on an 8x11 inch sheet of paper.
However, rather than print page by page on individual sheets of paper, I want to print out multiple pages, 2 to a sheet of paper. In doing this, the images of the pages come up as 3x5 inch; thus not readable if printed without the usage of magnifier.
Not that familiar with the program, but tried to do a resize process by setting some adjustments and then to a new pdf file. It did not change that much ... and increased the file size dramatically.
I am a novice to these processes. Can someone advise how to resize the whole file, with images of pages side by side, so that when multiple print is used for 2 pages the size comes up closer to something like 5x7 inch each?
ThanksLet me try it this way.....
1. The pdf file, when initially opened up, in the opening view shows 2 simotaneous pages side by side ... with hardly a divider between them. This at this point has nothing to do with the print mode.
2. The book in question was 'Digitized by Microsoft' ... don't know if that makes any difference, but thought it would help to under stand that it was not created by the normal Adobe Acrobat method.
3. Now, when I go to the Print mode, from where I just viewed the 2-side-by-side pages, the initial view there, for 'page', is just 1 page ... not the 2 page view I just came from ... and it will print out this view in a full sheet version.
4. But, not wanting to print out 1130 pages, want to print multi-page as allowed under Acrobat options.
5. So choose multi-page and 2 pages and "Print to printable area"..
6. When this option appears in the print viewing window, the 'images' (presuming that to be the correct reference) are small, over the normal (roughly) 5 x 7 inch (each) for a 2-page print option.
7. With the 2-page print option, the images are only 3.5 x 5.25 inches ... rather than something like 5 x 7 inch ... which is difficult to read without a magnifier. [Note: This 3.5 x 5.25 is as indicated in Properties that the original 'Digitizing' did.
8. So, in essence, how can one change the default individual image size from 3.5 x 5.25 inch size, to something closer to 5 x 7 inch size ... so that each image fills in more of it's half of the 8.5 x 11 inch page being printed ... rather than the small size reflected in the attached jpg ?
I've attached a jpg of the print screen, and one of the 2 page side-by-side 'default' view in Acrobat.
Thanks -
How to resize multiple images?
I am newbie to RH and would like to know if there is a method /shortcut by which I can resize multiple images?
Specifically to my project: I have close to 50 tables containing various images and their descriptions. When I insert these images into RH, the original image size is inserted and these images are of various sizes.
I know how to resize multiple images in Word but not in RH and hence, reaching to higher powers
I am using RH 9
Appreciate all your help!Hi There, Well the best option is to resize each image individually but if you feel that you can select all images together and the resize them all at once I am sure that you would like to give a read to this post from forums which talks about this job
http://forums.adobe.com/thread/466933 -
How to resize photos in iPhoto?
Hi
I can seem to figure out how to resize my photos so I can send them via email or just make them smaller in general. Any suggestions?What is your email client? If you use Mail, Eudora, Entourage or AOL then just select the photo you want to email and click on the Mail button. You'll be presented with a menu to choose the size of the file to attach to the email.
If you are using a web based email you'll have to export the files to the Desktop via the File->Export->File Export menu option where you'll be able to set the file size and quality level of the files.
See TD's treatis on file access on ways to access the photos for use outside of iPhoto.
Do you Twango? -
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