Resize and display large images at high frame rate.

Hi,
I am looking for some suggestions on how to implement fast image display.
I have a device which creates 3000x3000 data arrays which I then convert into images. The device can output this data at anywhere from 5-50fps.
For display these are then resized to about 500x500 pixels.
The problem I have is that the resizing part of the process is quite slow and takes around 3/4 second .
So does anyone have an suggestions on I can get the images to the screen at a reasonably quick rate ?
I guess I need some sort of queue but has someone an example of how to do this ?
Thanks,
Paul

Hi Rox,
How are you verifying that you are loosing the frames during the saving and not during the acquisition? Are you able to determine where you are dropping frames? Is it at the beginning, the end or randomly? Thank you!
Regards,
Kira T

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Acquire and save images at high frame rates

I am attempting to acquire and save images at a rate of 3000 fps for approximately 100 ms using a JAI 6740GE GigE camera, LabView 2011, and IMAQdx. I can acquire the images at the necessary rates, but am dropping images when I try to save them. The current test program I am working with contains a producer loop for acquiring the images, converting them into an array, and putting them into a queue, and a consumer loop to write the arrays to a TDMS file. Currently I can acquire and save the images at a rate of approximately 1200 fps before I begin losing a few frames. The code is attached below. I would appreciate any ideas to be able to save the images without dropping frames.
Attachments:
Trigger Image to AVI faster.vi ‏38 KB

Hi Rox,
How are you verifying that you are loosing the frames during the saving and not during the acquisition? Are you able to determine where you are dropping frames? Is it at the beginning, the end or randomly? Thank you!
Regards,
Kira T

Trying to link a thumbnail in one frame to a larger image in another frame GOLIVE 9...

Hi.
I am using Adobe Golive 9.
I found a tutorial on the internet that allows you to create an image gallery with clickable thumbnails
http://www.tutorialhero.com/click-48179-create_an_image_gallery_with_clickable_thumbnails. php
However, the tutorial is designed for a page without frames.
I want to be able to do this using frames.
I want to link a thumbnail on a page in one frame to a larger image on another page, so that when your mouse is over the thumbnail,
the larger version appears in the other frame.
This is what my frames look like so you get an idea of what I'm trying to do
And here is a picture of the thumbnail in the lower frame and the larger image in the frame above it.
Could someone please give me STEP BY STEP instructions on how to do this? I'm new to Golive, using version GOLIVE 9, and I know this can be accomplished using "Set Image URL" but have no idea how to do it.
Thank you for your help all.
Chris.

A link in one frame is designed to call another page into some other frame, not an image. You can't use SetImageUrl across different pages. You'd probably have to put each of your large images on a page, and call each page each time. I'm not sure why you're so set on using frames, they have many disadvantages.

When I have resized and saved an image in Photoshop (CS, version 8.0 for Mac) using image size, why is it so large when I open it in preview or another image viewer? Has it actually saved according to the size I specified?

When I have resized and saved an image in Photoshop (CS, version 8.0 for Mac) using image size, why is it so large when I open it in preview or another image viewer? Has it actually saved according to the size I specified?

You want to view the image at the Print Size, which represents the size that shows in the Image>Resize Dialog.
View>Print Size
Since screen resolution is almost always lower that the print resolution (somewhere between 72 and 96 usually), images will always look bigger on the screen, unless you view them at print size.
(apple Retina displays have a much higher resolution than normal screens, closer to the average print size resolution)
more info:
Photoshop Help | Image size and resolution

Displaying large images in MIDP 2.0

Hello,
I've been building a little file browser in MIDP 2.0. Now I'd like to add some file opening in, too.
Videos and sound can be played quite easily using the MMAPI.
But images are a tougher case. I haven't found any way to display images using the MMAPI, and loading big images with Image.createImage causes an OutOfMemoryException.
So, does anyone know a trick (extensions are OK too) to display large images with? Naturally downsizing, as in the case of videos, is OK too.
-- Mikko

about image resizing, it is very difficult issue.
I did this code for my company in 2 whole weeks. and sure I can not post it.
pluse this code was only for Jpeg files.
I still can give u some hints,
1- There is open source code I dont remeber its name ,I think it was JPEG Decoder for J2ME try to search for this.
this code is said to be for J2ME, pulshit . when u just instansiate instance from this class u got OutOfMemory Error. but this code still good as concept.
2- Use the previous code to do the decoding while reading, I mean u will have to open stream on ur file then decode the data and resize.
Good Luck

Firefox can't load a Siemens Gigaset network camera but IE8 can. There is an error in the code from the cam. Could Firefox ignore this and display the image anyway ? eg. with Ignore / Abort.

I run Windows-XP SP3 and I can't get the image from a Siemans Gigaset cam. There is an error in the cam code (a lacking rutine) . IE8 ignores this and displays the image anyway.
Is it possible to get a notification like Ignore/Abort/ Continue ???

Does the documentation for that camera, or for the software with it, say anything about ActiveX or about H.264?
If so, it isn't compatible with Firefox - it doesn't do ActiveX and it doesn't support H.264 in the HTML5 standard. Microsoft just released a plugin for Firefox that adds H.264 support to Firefox, but IIRC that only covers Windows 7 - not WinXP.

How to Snap/Grab Image from 1394 camera and display the Image in CWIMAQVIEWER in VC++ ?

Hi,
I have : - IMAQ1394 2.0.1
              - NI Vision 7.1
In VB, I can Snap/Grab Image from 1394 camera and display the Image in CWIMAQVIEWER :
    Dim Image0 As New CWIMAQImage
    imaq1394SnapCW(sid0,Image0)
    CWIMAQViewer1.Attach Image0
Now,How can I do this in VC++6.0?
    I tried:
              C_CWIMAQImage m_imgViewer1;
              m_imgViewer1 = m_CWIMAQVision1.CreateCWIMAQImage();
              m_CWIMAQViewer1.Attach(m_imgViewer1);
              imaq1394SnapCW(Sid,m_imgViewer1); <--there is no "imaq1394SnapCW "function in VC++,why?
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    Thank you!

For people looking back at these old posts regarding
CWIMAQViewer - it was not made to be used in the C environments and is made
for VB.
Refer to the following locations for displaying images in C
environments:
Start»All Programs»National Instruments»Vision»Documentation
Start»All
Programs»National Instruments»Vision»Text Based Examples
Make
sure that you look at the examples and documentation that is in
reference to the C environments not the VB environments
Vince M
Applications Engineer

Browser can resolve, access, and display JPEG image, but ImageIcon can't.

I've got this weird problem that only happens with images accessed through a customer's VPN:
Microsloth Internet Imploder can resolve, access, and display a JPG image from a VPN URL, in the general form:
http://intranet/part?FOOBAR.JPG which the browser apparently transmogrifies into
http://mogrify.foo.com/images/scripts/cgi/detail.cgi?FOOBAR.JPG(as Jack Webb often said, the names have been changed to protect the innocent)
Firefox can also resove, access, and display the image.
But an ImageIcon, when fed either URL, quietly fails to get anything, No errors, no exceptions, but no image, either.
The application, if it detects the failure of ImageIcon to come up with the image, somehow (not my code) defers to "Windoze Image and Fax Viewer," which locks up trying to resolve, access, and display the image.
What could possibly be going on here?

I'd love to have the luxury of saying, "You lost me at Windoze." Then again, to paraphrase a running gag from Airplane!, it looks like I picked the wrong week to quit hemlock.
As my final message on my other thread on this topic indicates, the problem is that even though the URL ends in JPG, the server isn't really serving up a JPEG, but rather, an HTML page containing the JPEG.
Knowing this, a solution (of sorts) presented itself: if the URL doesn't produce a displayable ImageIcon, try constructing a JEditorPane on the URL. The results aren't exactly pretty, and you do have to try the ImageIcon first, but it does work.
JHHL

How can I simultaneously acquire and display an image on the front panel using a PCI-1408

I have to acquire and display an image directely in the front panel of a *.vi using a PCI-1408. i have to know all informmations about this image because I want to create a calibration system.

Hi Paola,
if you own IMAQ Vision you can just have a look at the examples that comes with your board or you can look at: http://zone.ni.com/devzone/explprog.nsf/6c163603265406328625682a006ed37d/2abaefe05789961686256866007c0d22?OpenDocument.
Without IMAQ Vision look at:
http://zone.ni.com/devzone/explprog.nsf/6c163603265406328625682a006ed37d/22474456534202b086256aff005fc4f3
(or search at ni.com for "IMAQ Display without IMAQ Vison)
Please mail me if you need further help,
Michael

Cannot create slideshow with high frame rate

I have just bought QuickTime Pro version 7. I am using Windnows XP SP2 on a Pentium D machine.
I am trying to create a movie with still images I captured from my digital camera. I created a 10 seconds slideshow and set the frame rate to 30 frames per second. I then saved the file as a Quicktime movie. When I played the movie with my QuickTime Player, I could see actions for the first two seconds only. After that, the picture didn't change eventhough the progression bar was moving. Once the movie reached the end, the player then changed the frame to show the last picture of my slideshow.
In short, only the first 60 images are shown in the first 2 seconds. Then the slideshow was stuck with the 60th image, until it changed to the 300th image at the very end.
Does anybody has the same experience? Did I do anything wrong?

One more thing. If I set the frame rate to be less than 10 frames per second, it works fine. It just won't work with high frame rate.

4K Monitor Support - Higher Frame Rate Hz

To all those geeks who are trying to get 4K support from your MacBook Pro I have done it. Using SwitchResX, Belkin Mini DisplayPort to HDMI adapter it works on the Seiki SE50UY04. I am powering it with a MacBook Pro 2.3GHz Intel Core i7, 8GB 1600 MHz DDR3, running 10.8.4 OS X. I have plugged the Belkin into the left side LightingBolt outlet. I am running the Seiki monitor at 3480x2160 @14Hz. Images are fine. Screen a little slow, but usable. Have run a number of 4K videos using Quicktime7 and FlipPlayer and DIVx. FlipPlayer was not as good.
FYI. The Best Buy rocketfish Thunderbolt/Mini Displayport to HDMI adapter did NOT work. Nor did the right sided HDMI port on the MacBook.
Has anyone gotten this to work at a higher frame rate and how did they do it?

I did what you did, but with te timing from the link below.
It works with 15 Hz - wow!
Then I aranged the screens and restart again.
After this in system/monitor (standard controlfield) I can select as frequency 15 Hz AND 30 Hz.
Did it - got it! 4K at 30 Hz is what my seiki SE39UY04 is telling and what I can see.
For info: My miniDispayport to HDMI is Club3D CAC1153 (active one HDMI1.4)!
God luck

How can I change to a higher frame rate than 12 FPS?

Just got a good deal on a 15 in MACBOOK Pro running Yosemite with the latest Quicktime and iMovie. Is the best frame rate I can get out of this HD camera 12fps? I can't find anywhere to change it in QT or in IMovie.
MacBook Pro with Retina display, OS X Yosemite (10.10.2)

studiojl wrote:...So as I understand it the camera will decide on FPS based off available light? ...
So you seem to correctly understand the information in the linked Use More Light! article.
studiojl wrote:... I don't like that at all...
Your emotion is irrelevant. It simply works the way Apple software is written. Perhaps some other computer system works different from Mac OS X and Apple camera apps?
If you intend to keep using Mac, you can take manual control of some camera parameters by using a third party add-on app such as iGlasses, Webcam Settings, or Sight Control.
studiojl wrote: ... what frame rate does it pick if I import one 30 FPS clip and one 60 FPS clip?
Whatever frame rate is set by the program of the software application you are using to record those clips.
You can determine that frame rate by making short test videos and watching it in QT Player.
The QT "Inspector" window will show you the frame rate for the clip.
Here's an example for a clip made in my low-light room:
Message was edited by: EZ Jim
Mac OSX 10.10.2

Perf. implications of high frame rate

What are the performance implications of using a high frame
rate in Flex. Our designers suggest that a frame rate of 60fps is
smoother animation. They are creating Flex components with Flash
CS3 and want to use the higher rate and use them in Flex.

As you might expect, a higher framerate is going to consume
more of the CPU. It's pretty much that simple. Some end user's
computers may not be able to keep up with the framerate and their
experience will be less smooth, probably less smooth than if you
used a smaller framerate. I suggest you experiment.

High frame rate outputting

Is it possible, having shot footage at 100fps (with a timebase at 25), then interpreted footage as 100fps to maintain the high speed frame rate, to output this as a 100fps file, to be watched at the same speed? I'm guessing only some machines/players can support this, but this is separate issue. I'm wanting to find out about getting a workflow for high frame rate footage in Premiere (or After Effects, as I read somewhere else this can support 99fps outputs.)
This is not a question of slow motion shooting/overcranking- there seems to be the capability to shoot high frame- is it possible to retain this in order to output it at the same speed it was shot?
But the issue seems that high end footage (say from a RED for instance) can only support a timebase framerate of maximum 59.96 (although something like a GoPro can go to 120p)
Would be great to discuss this more- its only a matter of time before this becomes more prevalent...

If the GoPro 2 does 60p I'd do that if you want slow footage from that cam too. Either way I'd do a custom project storyline at 720/30 frames. Then do some web searching on the term "conform" because you'll want (I think) to conform the fast stuff down and that will slow it down. You'll just import some portion of your 120fps footage from the event library and and choose Conform Speed from the Retime menu (command R). You can go beyond that by retiming further and by choosing Optical Flow for video quality. If that still isn't enough you might need twixtor but you may find that's workable. If you shoot at 120fps you'll get some seriously slow stuff after conforming and retiming slower.

Displaying Large Images and Out of Memory Error

hi,
I am relatively new to JAVA and I have been trying to display a large jpeg in a scrollpane. The image is about 30 mb in size and is very long. When compressed the image is very small (1mb) but when uncompressed it increases in size due to the black background. I have been looking all over the place to find a method to display such a large image. I read a little bit about the JAI and its tile features but I am not really familiar with it. Also the image has to be displayed in an applet. the whole mess has to do with the JAVA VM memory restrictions as it does not have enough memory to process the image. Is there a way to uncompress a part of the JPEG and display it or assign addittional memory to JAVA. I will really appreciate any help on this topic.
thanks

Hiya.
I can't say I know how to save Java from large images, but you can up the memory allocated to the JVM:
java -Xmx120M ...
will give 120M to the JVM (max). There is an -Xms also which gives the initial allowed space.
Regards.
Paulj.

Resize and display large images at high frame rate.

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