• 0

C# Displaying JPEG2000 file (JP2)


Question

10 answers to this question

Recommended Posts

  • 0

I have know idea (sorry),

a side question:

is JPEG2000 an actual standard yet? I was following the movement in 2001, but it seems that development dropped off. The standard seem to be a great improvement on the old jpeg standard. Does photoshop CS2 support JP2 ?

  • 0

JPEG 2000 is a new image coding system that uses state-of-the-art compression techniques based on wavelet technology. Visit this site for more details: http://www.jpeg.org/jpeg2000. And yet, it include motion JPEG 2000 which is similar to MPEG files. I dont think photoshop CS2 support JP2, maybe soon. And that is why I'm asking someone else to help me find the source for my application. Specially the encoder/decoder thing... :)

Amaw man siguro ka!

  • 0

Exactly! And that is why I'm asking anyone who knows about it. I know it's kinda hard for someone who will intrust his/her knowledge to someone else whom he/she don't know. But what make sense is, you were able to share it with others and make them use for it. That makes us "No Man Is An Island"! :)

  • 0

Found this in the newsgroup microsoft.public.dotnet.framework.drawing: (February 2005 info)

  Quote
Sorry to discourage you but I haven't seen anything that does JPEG2000 under

.NET yet.

It's certainly a frequently asked question.

--

Bob Powell [MVP]

Visual C#, System.Drawing

However, I found this via a Google search:

  Quote
ImagXpress™ JPEG2000 Add On

.NET, COM & VCL Interface to JPEG2000

http://www.pegasusimaging.com/ixjpeg2000.htm

ImagXpress JPEG2000 Add On is $699 for a single development license. This product may also involve additional licensing.

:x

Would be cool to have though. I just wish the format was open source and license free. Just check out the image sample in the above link for a comparison on the same file size. A cool thing about JPEG2000 is that you can also tell it to "compress an image to 80K" and it will do that, setting compression as necessary. :) It has the regular method of "compress at 80% quality" too. It also has a lossless compression mode, and even supports transparency / alpha channels, EXIF metadata, and more!

  • 0

Sadly, it's a hugely patented area. Basically it uses whats called a wavelet transform which is kinda like the fourier transform. It's pretty well known math especially to ANYONE in the sciences or engineering but patenting math is what software patents are all about. Often you'll find devs ignore it or just choose a slower/crappier hackish way of getting around the precise wording.

You'll have to use P/Invoke and build a dll.

http://www.ece.uvic.ca/~mdadams/jasper/

ps: go vancouver/island!!!

  • 0

:yes: Is that so, actually I made my own analysis of this JPEG2000 file and I came up to this information I get out of this file:

(Motion JPEG2000 file analysis)

File Offset = 0x0000000000000000 (0)

Normal Box Size = 0x0000000C (12)

Box Type = jP (Level 1) => JPEG2000 family signature

---------------------------------------

File Offset = 0x000000000000000C (12)

Normal Box Size = 0x00000014 (20)

Box Type = ftyp (Level 1) => File type

Major Brand = 0x6D6A7032 (1835692082)

Minor Version = 0x00000000 (0)

Compatible Version = 0x6D6A7032 (1835692082)

---------------------------------------

File Offset = 0x0000000000000020 (32)

Large Box Size = 0x0000000001E85A71 (32004721)

Box Type = mdat (Level 1) => Media Data

(Data) = Main data exists here

---------------------------------------

File Offset = 0x0000000001E85A91 (32004753)

Normal Box Size = 0x00000529 (1321)

Box Type = moov (Level 1) => Movie

...

...

...

My problem now is on how to manipulate the real codec thing, so that I can create an Image object that will handle a JPEG2000 file. :(

Would it be possible if I will make it without the lib of JPEG2000 or any reliable source related to JPEG2000 which will help me develop this thing? :rolleyes:

ps: I never been to vancouver/island, or anywhere in canada. I'm actually planning to work in canada or somewhere in the US. Is there someone who can help me find a job related to my work now? (Software Developer)

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • I'm not a fan of the HP "Smart" app either, but it does work. I just wish I didn't have to log in to use it. HP Color LaserJet Pro MFP 4301
    • FocusOn Image Viewer 1.32 by Razvan Serea FocusOn Image Viewer is a fast, lightweight, and user-friendly photo viewer for Windows. It supports various image formats, offers basic editing tools, EXIF data display, and batch renaming. With a clean interface, slideshow mode, and easy navigation, it’s ideal for quickly viewing and organizing photos without unnecessary complexity or system resource usage. FocusOn Image Viewer key features: Auto Organize: Automatically sorts photos by date using your chosen template. Explorer View: Browse and manage images with thumbnails; includes basic edits like resize and rotate. Photo Editing: Crop, apply filters, correct colors, add borders or text. Non-Destructive Edits: Original images remain untouched. Photo Sharing: Post directly to blogs, Twitter, and Facebook. Email Support: Send selected images via email. Print Options: Print to fit paper size, preserve aspect ratio, or fit multiple images per page. Slideshow: View selected photos in a slideshow. EXIF Tools: View or remove EXIF data. Scanning: Import from TWAIN or WIA-compatible scanners. Set as Background: Quickly set any image as desktop wallpaper. Batch Rename: Rename images in bulk using templates. Resize Images: Resize with optimized or custom resampling methods, including multi-step resizing. Thumbnail Sizes: Choose from thumbnail sizes between 32–256 pixels. Format Support: Compatible with over 100 image formats. FocusOn Image Viewer 1.32 changelog: Added Ghostscript(AI, PDF) DPI option Fixed transparency issue when saving PDF document as image Other improvements and bug fixes Download: FocusOn Image Viewer 64-bit | Portable 64-bit | ~7.0 MB (Freeware) Download: FocusOn Image Viewer 32-bit | Portable 32-bit View: FocusOn Image Viewer Website | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • Wall cabinet: Fiber connection (1Gbps) Patch panel 2.5Gbps Router A mini PC with Ryzen 5800H CPU and 32GB DDR4 RAM, for network related tools (Portainer, Pi-Hole, Cloudflared, Tailscale, Uptime Kuma, Wetty) A headless server running Proxmox: AMD Ryzen 9 9950X CPU, 96GB DDR5, RTX 3090 24GB GPU, 10Gbps NIC, and a bunch of NVMs, SATA SSDs, HDDs A VM with TrueNAS for backups and media server via Jellyfin, passing through the SATA storage controller A VM with an Ubuntu server acting as a web and a GPU server for AI workloads, and a TeamCity build/deploy agent for my personal projects This setup has evolved many times for the last 2 years, I have not gone completely crazy, yet (I think), but still experimenting, still learning, it is a fun and rewarding experience having a home lab!
    • Microsoft PC Manager 3.17.4.0 (Offline Installer) by Razvan Serea With Microsoft PC Manager, users can easily perform basic computer maintenance and enhance the speed of their devices with just one click. This app offers a range of features, including disk cleanup, startup app management, virus scanning, Windows Update checks, process monitoring, and storage management. Microsoft PC Manager key features: Storage Manager- easily uninstall infrequently used apps, manage large files, perform a cleanup, and set up Storage Sense to automatically clear temporary files. Health Checkup feature -scans for potential problems, viruses, and startup programs to turn off. It helps you identify unnecessary items to remove, optimizing your system's performance. Pop-up Management - block pop-up windows from appearing in apps. Windows Update - scans your system for any pending updates. Startup Apps - enable or disable startup apps on your PC, allowing you to optimize your system's startup performance. Browser Protection - rest assured that harmful programs cannot alter your default browser. Also enables you to change your default browser. Process Management - allows you to conveniently terminate any active process, ensuring optimal system performance and resource utilization. Anti-virus protection - Fully integrated with Windows Security. Safeguard your PC anytime. Quick Steps: Download Microsoft PC Manager Offline Installer (APPX/MSIX) with Adguard Adguard serves as a third-party online service, offering a user-friendly method for directly downloading appx, appxbundle, and msixbundle files from the Microsoft Store. Official download links will be generated for both the app's various versions and its dependency packages. How to download Microsoft PC Manager Offline Installer (APPX/MSIX) 1. Initially, you must find the app URL within the Microsoft Store. Access the Microsoft Store via your browser and search for "Microsoft PC Manager". Once located, copy the app URL, which includes the product ID, either from the address bar or from the provided link below. https://apps.microsoft.com/detail/9PM860492SZD 2. Now paste the app URL into the designated area, then click the check mark button to produce a direct download link. 3. To download, right-click the relevant link and select “Save link as…” from your browser's menu. Occasionally, Microsoft Edge may flag the download as insecure. In such cases, consider utilizing alternative browsers such as Google Chrome or Firefox to successfully complete the download. Microsoft PC Manager is a completely free tool optimized exclusively for use on Windows 10 (version 1809 or newer) and Windows 11. Download: Microsoft PC Manager 3.17.4.0 | from Microsoft Store View: Microsoft PC Manager Home Page Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • You might want to update to 1TB drive.  They are not very expensive these days, there are plenty of options - simple look I would think you could find a 1TB ssd or even nvme somewhere between 50 and 100 bucks. when I have moved to larger ssds in laptop in the past, you can just connect the drive via usb - image.  Then take the old drive out, put in the new drive and there you go..  If your concerned about how much space you have left this prob your best bet..   
  • Recent Achievements

    • First Post
      Johnny Mrkvička earned a badge
      First Post
    • Week One Done
      viraltui earned a badge
      Week One Done
    • One Month Later
      serfegyed earned a badge
      One Month Later
    • Dedicated
      firey earned a badge
      Dedicated
    • Dedicated
      fettermanj earned a badge
      Dedicated
  • Popular Contributors

    1. 1
      +primortal
      645
    2. 2
      ATLien_0
      223
    3. 3
      Michael Scrip
      223
    4. 4
      Xenon
      151
    5. 5
      +FloatingFatMan
      144
  • Tell a friend

    Love Neowin? Tell a friend!