Comments on: All about pixel colors: Summary https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/?s_tid=feedtopost Retired from MathWorks in 2024 after 30 years of service. Can now be found at MATLAB Central, https://hornjourney.com, and https://matrixvalues.com. MathWorks career included image processing, toolbox development, MATLAB development and design, development team management, MATLAB design standards, Steve on Image Processing blog (https://blogs.mathworks.com/steve). Co-author of Digital Image Processing Using MATLAB (https://www.imageprocessingplace.com/DIPUM-3E/dipum3e_main_page.htm). French horn enthusiast, member of Concord Orchestra and Melrose Symphony, member of the board of Cormont Music and the Kendall Betts Horn Camp. Mon, 14 Mar 2016 13:54:47 +0000 hourly 1 https://wordpress.org/?v=6.2.2 By: Steve https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-22198 Wed, 07 Oct 2009 18:27:52 +0000 https://blogs.mathworks.com/steve/?p=51#comment-22198 Yasotha—What do you mean by unique color identification?

]]>
By: yasotha.l https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-22197 Wed, 07 Oct 2009 18:25:59 +0000 https://blogs.mathworks.com/steve/?p=51#comment-22197 hi
i’m a student and i would like to know about unique color identication in any image and the place of the pixel position.

]]>
By: Steve https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-14956 Tue, 13 Nov 2007 14:53:02 +0000 https://blogs.mathworks.com/steve/?p=51#comment-14956 Abhijit—I’m not sure that your question makes sense. Except for laser light, the light arriving at any particular sensor has a full spectrum of wavelengths, not just one. That spectrum is filtered according to the characteristic color of the sensor (e.g., red, green, or blue), and a single number recorded. Then the numbers for several neighboring single-color sensors (red, green, and blue) are combined in some way to produce a single RGB pixel.

]]>
By: Abhijit https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-14928 Tue, 13 Nov 2007 06:21:45 +0000 https://blogs.mathworks.com/steve/?p=51#comment-14928 Hi Steve,

After capturing the color image on the color CCD camera, I would like to find out at each pixel the wavelength. Can you please help me regarding the procedure I should follow in order to determine the wavelength at each pixel.

Please help. Thanks a lot.

Abhijit

]]>
By: Steve https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6959 Tue, 14 Aug 2007 13:35:38 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6959 Yicong—There are examples showing how to use the code in Chapter 8 of the book. What other information are you looking for?

]]>
By: Yicong https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6947 Fri, 10 Aug 2007 18:33:57 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6947 Steve,

I am working image scrambling in JPEG domain. I am looking the matlab code for JPEG encoding and decoding which can display the compressed result(JPEG image). but I didn’t get it. the matlab code about JPEG compression in your book is only for the algorithm implementation, but how can I display the result of your code?

Please help.

Thanks a lot.
Yicong

]]>
By: Dave T https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6890 Tue, 17 Jul 2007 20:19:20 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6890 khairiah,

The Image Acquisition Toolbox does not currently support still image cameras, so you will not be able to interface to your camera using Image Acquisition Toolbox.

You will have to write code to interface to your camera. The easiest way to do this would be to find an ActiveX control that can communicate with still image cameras and use MATLAB’s ActiveX interface.

]]>
By: B NARSIMHACHARY https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6851 Tue, 10 Jul 2007 08:39:29 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6851 I Want to know the National and International Experts in Image Processing

]]>
By: khairiah https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6850 Tue, 10 Jul 2007 02:49:16 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6850 steve,
how if my camera is not scientific camera and also not firewire type camera but more to commercial type
digital camera.Ex Digital Still camera Sony DSC -F717.
It is I must have certain driver in order to use imaq.

]]>
By: Steve https://blogs.mathworks.com/steve/2006/04/07/all-about-pixel-colors-wrapping-up/#comment-6846 Mon, 09 Jul 2007 13:26:08 +0000 https://blogs.mathworks.com/steve/?p=51#comment-6846 Hussain—I’m sorry, but I can’t help you with debugging your program. Also, a blog comment isn’t the best place for posting a lot of code, so I’m going to delete that part.

]]>