331 Threads found on edaboard.com: Mean Image
guess there is some ambiguity in your question. do you mean image segmentation where you extract regions for different objects in the image?
Digital Signal Processing :: 16.09.2006 18:12 :: itsthetimetodisco :: Replies: 2 :: Views: 1645
If i understand correctly you mean as zkai2000 said and you should useing sth to capture images for example usb web-cam or a video capture card for your pc, and then if you are using windows as your OS af first it's better to have a look msdn and search for vfw function such as "CapCreateCaptureWindow" or "capDrivreConnect" ,and t
PC Programming and Interfacing :: 16.09.2004 14:37 :: ali :: Replies: 2 :: Views: 775
1) is not C++ code
2) You should learn the use of C functions ..and some pointer will help also
3) the code seems to be ok (i mean it should compile that's all ).BUT you do something Weird .AND FUNNY !. INSIDE of two loops you calculate r1,r2, angle1,angle2 . and for evry iteration you just calculate the values .. and they are discarted EVER
Digital Signal Processing :: 30.09.2004 14:51 :: eltonjohn :: Replies: 16 :: Views: 7842
has anyone used an image sensor particularly the CDD one?
What is the output of that image sensor, digital or analog, tnx
Added after 39 seconds:
CCD sensor i mean, not CDD
Electronic Elementary Questions :: 28.07.2005 03:54 :: ece4afe :: Replies: 1 :: Views: 1518
What is "8 bit RGB"?
Do you mean 3 bits of red, 3 bits of green, and 2 bits of blue?
Or do you mean that it outputs three 8-bit bytes in sequence, first red, then green, then blue?
Digital Signal Processing :: 21.09.2005 03:40 :: echo47 :: Replies: 6 :: Views: 1375
What do you mean by converting pixel values to binary values?
if there is a 8-bit image, you got a value 129 from a pixel, then you want to change it to 1000 0001??
If so, what you need is a function change from decimal to binary, but not a image processing problem. As I remember, there is a function called dec2bin, you may check about (...)
Electronic Elementary Questions :: 11.10.2005 21:51 :: tofinhk :: Replies: 3 :: Views: 1163
Thanks for advice!It's an idea.mean time I consult my son,he is an software engineer.The gif image is compressed and when resizing it to a smaller one there are a lot of pixels loosed!So the best thing is to redraw in PCB soft and to use with save as .emf ,printing after in Windows Xp tools.
I saw also on net Tractrix progie which make the action
PCB Routing Schematic Layout software and Simulation :: 08.03.2006 03:27 :: BOHDA :: Replies: 3 :: Views: 742
I have a 4 component jpeg test image provided by ISO, but generaly it is of 1 compent (grayscale) or 3 component(RGB ), but what is of 4 component , if i run this image IJG code
it is saying that the out put file must be gray scale or RGB , what does it mean .can any one explian me .
Digital Signal Processing :: 05.05.2006 06:07 :: amith :: Replies: 1 :: Views: 618
I know that PSNR use for evalution of Video quality.
Added after 6 minutes:
I think it is show similarity of two image or frame.
Added after 30 minutes:
PSNR = 10 log 255^2 /MSE
MSE = mean squared error between the original and decided frame or picture
Digital Signal Processing :: 22.08.2008 23:28 :: alvars :: Replies: 1 :: Views: 1083
What u mean by experience with image processing and DSP? I've done image processing using MATLAB.
Digital Signal Processing :: 25.05.2006 05:11 :: leekk8 :: Replies: 3 :: Views: 612
Anybody had done the pjt"combined Morphological spectral unsupervised image segmentation"?
In this work a combined,2 stage approach for image segmentation is proposed.The first stage is a refinement of the texture_gradient watershed algorithm and provides over segmented,but homogenous texture the second stage,these primitive re
Digital Signal Processing :: 05.09.2006 02:23 :: S.V.Divya :: Replies: 0 :: Views: 576
What you mean by convert square image to circular image? I can't imagine there is square image.
Digital Signal Processing :: 06.09.2006 00:48 :: leekk8 :: Replies: 8 :: Views: 1260
What do you mean by frequency in an image??
Digital Signal Processing :: 20.09.2006 02:04 :: icyabhi :: Replies: 4 :: Views: 2017
i mean i have an image 256x256. i want to upsample this image, how can i?
Digital Signal Processing :: 29.09.2006 03:40 :: usman :: Replies: 5 :: Views: 1066
I need to implement the following formule using matlab
m(x,y) = 1/ Nη Σ (s,t) ε η(x,y) I(s,t)
where η(x,y) is a set of neighbouring pixels centering at (x,y), m(x,y) is the sample mean of I (x,y) and Nη is the size of η.
where I(s,t) may be any pixel in the given
Digital Signal Processing :: 29.09.2006 00:27 :: sasilatha :: Replies: 2 :: Views: 492
What do you mean by stabilization?
PLD, SPLD, GAL, CPLD, FPGA Design :: 30.09.2006 09:07 :: keano :: Replies: 2 :: Views: 1355
By global orientation you mean for the whole image ?
OK , let me look through my papers and notes to see if i can help you out .
Digital Signal Processing :: 05.10.2006 01:21 :: koosdoos :: Replies: 5 :: Views: 978
I need to implement the following formula using
m?(4)(x,y) = 1/ N η(s,t) ∈ η(x,y) Σ ( I(s,t) -
where η(x,y) is a set of neighbouring pixel centering at (x,y)
m?(x,y) is the sample mean of I(x,y)
(i.e) m?(x,y) = (1/ N η(s,t) ∈ η(x,y) Σ (
Digital Signal Processing :: 06.10.2006 01:44 :: sasilatha :: Replies: 0 :: Views: 510
Do You mean image rejection?
RF, Microwave, Antennas and Optics :: 12.12.2006 12:48 :: Grig :: Replies: 3 :: Views: 506
What do you mean the following :
i realized that it is waiting for a null along with the transmitted byte
Can you please explain more and post the code of your program.
Anyway, the following forum is specialized in the Java technology and can be of great help
Embedded Systems and Real-Time OS :: 22.02.2007 15:34 :: jeniffer_mancini :: Replies: 1 :: Views: 756
if you mean to standard flash :
you can download the cpld code from xilinx site for ml403/ml405 boards.
PLD, SPLD, GAL, CPLD, FPGA Design :: 07.03.2007 12:44 :: sharonf :: Replies: 3 :: Views: 694
hi every one ,
i want to transmit an image using the RF letz say i have 2 security cams ( i donot want to transmit a cont. stream but i want to transmit a frame each 1 second or 3 seconds or some thing like that ) and a centeral PC to receive within a range of 100 meters the image but i donot know where to start from can u suggest to me the appro
Electronic Elementary Questions :: 05.03.2007 08:58 :: mr_anderson :: Replies: 0 :: Views: 315
i get mean shift tracking for my thesis may i have your code
Digital Signal Processing :: 09.06.2010 08:39 :: amir11601 :: Replies: 7 :: Views: 1461
Just a question.
If we are using a CCD to image an object, we know that we would need to have the size of a CCD element to be half of that of the smallest object feature we required to image in order to match the Nyquist Criterion. ie we would require two CCD element to image one object feature. When we display the image, (...)
Digital Signal Processing :: 23.05.2007 02:51 :: watertreader :: Replies: 0 :: Views: 438
In hardware.when reading mean that you process it pixels. Think simple it is digital values 8, 16 bit..belong to your image data.
You should tell clearly.Maybe I can help you
ASIC Design Methodologies and Tools (Digital) :: 24.09.2007 10:31 :: thuyet :: Replies: 6 :: Views: 3018
you mean that i bought it ???
but i think i can use the demo version.
PCB Routing Schematic Layout software and Simulation :: 14.10.2007 16:50 :: veiledcavalier :: Replies: 6 :: Views: 1189
I heard a lot of guys say the words regarding DSP system, can anyone explain them?
Digital Signal Processing :: 15.10.2007 23:41 :: bigrice911 :: Replies: 2 :: Views: 535
trade-off means: giving up one advantage in order to gain another
so for instance...a program runs faster if it uses more memory (a space-time tradeoff)...which one will you choose...? which one matters most...? which one matters least..? it all depends on your you want to save memory space or have faster results..!
Miscellaneous Engineering :: 27.11.2007 02:23 :: salma ali bakr :: Replies: 5 :: Views: 1848
what you mean by top points of the image does it mean the maxima of the image... if you want to detect the local maxima then try using the laplacian filter on the image... i.e convolving the image with the laplacian mask... as you have said that you are using a gaussian filter before this it (...)
Digital Signal Processing :: 19.12.2007 05:46 :: lordsathish :: Replies: 3 :: Views: 718
Hi all. As i know image reject mixer provides image signal cancellation, so does it mean than input noise (image band) is rejected too?
RF, Microwave, Antennas and Optics :: 01.02.2008 11:40 :: UWB_man :: Replies: 1 :: Views: 658
By 2D image u mean that
plotting the graph from returned signal
Or u mean a gray scale image
PLD, SPLD, GAL, CPLD, FPGA Design :: 13.03.2008 01:18 :: sameem_shabbir :: Replies: 3 :: Views: 628
hi everyone, i'm doing a project of palmprint for biometric authentication.
Now, I want to find the mean and standard deviation of a person palmprint.
How do i do it?
the concept is to scan the image from row to row..use for loops?
how do i do it?
i am really weak in matlab.Pls help~thanks~
Digital Signal Processing :: 25.03.2008 22:17 :: eunice_kcwei :: Replies: 0 :: Views: 609
centroid of a object in labelled image: take the mean of all the coordinates of this labelled object both x and y coordinates, call this centroid (this is how regionprops in matlab does)
Digital Signal Processing :: 09.04.2008 08:43 :: mondunno :: Replies: 2 :: Views: 2321
Hi every body ,
I'm looking for new topics in image processing that researches are done about them in 2005,2006,2007,2008 . I mean they are new topics and many people are interested in them.
Digital Signal Processing :: 13.04.2008 02:27 :: eelinker :: Replies: 3 :: Views: 810
this term is common in i2c interface.What does this mean?
thx in advanced
PC Programming and Interfacing :: 10.07.2008 15:49 :: brunokasimin :: Replies: 4 :: Views: 1511
am about to start working on image recognition system using AVR i.e ATmega48. If any one has any idea for matching a picture pattern which is stored in the EPRom to the out side world through a camera connected to the controller. If the picture pattern matches the controller perform some sort of task.
The problem is that i dont have any
Microcontrollers :: 24.01.2009 15:51 :: eltonjohn :: Replies: 5 :: Views: 2977
my problem is how alignment two images without using control points in matlab
can you help me in this code because I tried to deal with movement between the sequences images which mean (I1, I2,I3,I4,.....)several images
I try to
alignment ( I2 from I1) and
I3 from I2 after alignment I2
I4 from I3 (...)
Digital Signal Processing :: 01.02.2009 20:15 :: ayatariq :: Replies: 0 :: Views: 750
i want to match an impedance to 50 ohm. i simulated a stub matching network using cst and saw the smith chart. At my required frequency there was good match but, the shape of the smith chart (its connecting impedances at various frequency) was like a sharp spike. the tip of the spike is at 50 ohm at my freq and the spike is coming out from a circle
Electromagnetic Design and Simulation :: 11.12.2009 02:41 :: doubty :: Replies: 6 :: Views: 1328
You mean decode a image to other formate for display?For example, decode a jpeg to rgb565 to display on lcd or other output devices.
Microcontrollers :: 24.12.2009 10:00 :: unaided :: Replies: 2 :: Views: 699
I am a Msc student working on simple image processing for my school project, can any one help me to find mean shift clustering for matlab.
A working sample for color image and how can i use it ?
Digital Signal Processing :: 21.03.2010 23:51 :: manojn2884 :: Replies: 0 :: Views: 1477
Please provide me the matlab source code for JPEG2000 image compression/decompression.
The code should also display/calculate Peak signal to noise ratio(PSNR), mean squared error(MSE) and Signal to noise ratio(SNR).
Thanks in advance
Software Links :: 01.06.2010 12:06 :: cool2cool :: Replies: 1 :: Views: 594
hi, Some one can explain to me? what is the different between of mean and mean2 in the matlab? For an example, i have a image picture and want to do mean and mean2 function in the matlab. As an engineer, when to use mean function? And when to use mean2 fuction? thanks
ASIC Design Methodologies and Tools (Digital) :: 22.10.2010 01:40 :: Allenlee88 :: Replies: 0 :: Views: 982
This is a very generic question, C programming on What? is there OS on the system?
C programming means a compiler, an IDE and libraries and output assembly code that will be rendered, generally speaking it is totally different to produce a binary file that will work directly on a processor, that the same code the will work on a OS (even RTOS have l
Digital Signal Processing :: 22.12.2010 18:21 :: bibo1978 :: Replies: 1 :: Views: 376
Which schematic are you referring to? Post #27 is correct, corresponding to the datasheet. The snippet shown in post #33 isn't different.
I may read over something or otherwise be wrong. I just tell what the datasheet says.
When that is said - the datasheet never explicit tell that the configuration above is wrong. I p
Power Electronics :: 19.07.2011 21:27 :: Prototyp_V1.0 :: Replies: 41 :: Views: 3959
My main project have to use image processing using matlab.The things is that i need to take the picture of egg and analyse it using matlab and reach at a conclusionwhether its cracked or not(i mean minor cracks of order micron).
1.What camera i should buy to take eggs pic
2.How can i make and run the
Digital Signal Processing :: 27.12.2010 14:36 :: subinalex :: Replies: 3 :: Views: 764
CONFRML - is conformal
RC - is RTL Compiler
EDI - I think this is the new Encounter code, I'm not sure, we're still using SOC
...... just curious; is there any reason why you can't just open the documentation & check what the codes mean? That would be much faster.
Probably you can get the codes from Cadence as well if you don't have access to the d
ASIC Design Methodologies and Tools (Digital) :: 02.02.2011 01:33 :: cop02ia :: Replies: 10 :: Views: 526
are you mean it should use ip ? or what?
PLD, SPLD, GAL, CPLD, FPGA Design :: 20.02.2011 12:40 :: hodahussein :: Replies: 9 :: Views: 421
As i understand, if your images are pure artificial images (i mean in red picture there is only red color, no any other color component) then when you read image in Matlab you have an image mxnx3 where 3 is color components r,g,b. The non zero matrix layer gives your color on the image. (...)
Digital Signal Processing :: 08.03.2011 04:48 :: emresel :: Replies: 7 :: Views: 1009
I have some problem understanding how mean shift segmentation works.
The four images below show multi-spectral images from a river. the question is how I can segment a 3*3 pixel area of the image below using mean shift algorithm in the 4d feature space. the image has to be segmented into 2 (...)
Digital Signal Processing :: 22.04.2011 16:48 :: babakint :: Replies: 0 :: Views: 623
what does this file extension actually mean?
PLD, SPLD, GAL, CPLD, FPGA Design :: 01.09.2011 22:19 :: vgs :: Replies: 2 :: Views: 528