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Watermarking- losing color component..plz help

Started by p_r_a_d53 in Matlab DSP15 years ago

I m working on the project "wavelet based watermarking". am using the dwt2 function to get the approximation parameter. while doing so.. Iam...

I m working on the project "wavelet based watermarking". am using the dwt2 function to get the approximation parameter. while doing so.. Iam losing the color of the watermarked image. plzz help me out in obtaining the color component Here is my code.. a=imread('H:\pics\earth_from_space.jpg'); %i=imread('earth_from_space.jpg'); %i=uigetfile( '*.*' , 'select the image'); %[filename1,pat...


Channel coding using RCPC CHANNEL CODES AND SPIHT IMAGE COMPRESSION IN MATLAB

Started by Tavisha in Matlab DSP16 years ago

Hi Everyone I am trying to work on C and Matlab code for gettin a RCPC code rate of 1/2 from 1/4 using SPIHT image compression technique. I...

Hi Everyone I am trying to work on C and Matlab code for gettin a RCPC code rate of 1/2 from 1/4 using SPIHT image compression technique. I want help abt MATLAB. can anyone provide me with a SPIHT codec on matlab ? Also how can we plot PSNR graphs on matlab? is there any help box ? or tutorial ? I am not very good at both so need help. KIndly reply back Thanks Tavisha


Image Intensity and Pixel Values

Started by "ambika.shyam" in Matlab DSP16 years ago

Hi Everybody, Iam using Matlab 6.5 and Windows XP. I am trying to find the number of pixels and each pixel intensity in a...

Hi Everybody, Iam using Matlab 6.5 and Windows XP. I am trying to find the number of pixels and each pixel intensity in a given image. I am using Pixval and Impixel to retrieve the pixel values and Improfile to find the pixel intensity ....But Improfile is showing the pixel intensity for a drawn line segment. But i want to find this for the entire Imag...


gui AXES not showing in the correct window

Started by "slick.user" in Matlab DSP16 years ago

I don't know why the GUI axes are not showing the correct image in the axes. When I click browse, it should show on the top left. The first...

I don't know why the GUI axes are not showing the correct image in the axes. When I click browse, it should show on the top left. The first time it show correct, then the second time it show on the bottom right. I use cla reset to clear all the image from axes. How can I fix this, thank you. any help would be great. All files are here: http://download.yousendit.com/93E35A95586666AE...


display data on edit text in OCR

Started by dinahmad86 in Matlab DSP16 years ago

i'm working on an ocr (optical character recognition) shoftware, and i am using a neural network feed forward back propagation. i've done...

i'm working on an ocr (optical character recognition) shoftware, and i am using a neural network feed forward back propagation. i've done the GUI that's supposed to open an image then the neural network should take the image as an input and display the output on an edit text (or whatever). the thing is .. i've done the neural network, and the GUI separatly .. i dunno how to give th...


Reg. Matlab 7 axes to view images

Started by avinash_uv in Matlab DSP18 years ago

I designed a GUI with Guide... Placed a axes in it named 'axes1'... I have a few buttons and edit boxes also on the GUI. The program in the .m...

I designed a GUI with Guide... Placed a axes in it named 'axes1'... I have a few buttons and edit boxes also on the GUI. The program in the .m file for the GUI needs to display a jpg image in that axes1. The below code works for Matlab 6. But no longer for Matlab7 . axes(handles.axes1); imshow('image.jpg'); set(handles.axes1,'MinorTick','on'); Is there anything wrong in the above ...


MATLAB - 2D PSD from images

Started by zdalbey in Matlab DSP18 years ago

I have succesfully used Matlab signal processing tool box to look at PSD for 1D computer generated time series data but have not been able to...

I have succesfully used Matlab signal processing tool box to look at PSD for 1D computer generated time series data but have not been able to generate PSD for 2D images. Seeking process guidance or MATLAB documentation references for 2D PSD studies. MATLAB documentation mentions 'padding the image' to support PSD computations but I have not yet found any guidance for padding my image mat...


Re: how to find centroid of an object in an image???(one correction)

Started by Zahra A Shah in Matlab DSP21 years ago

i accidently made a mistake in the code Pls change the loop while i <= count         % display centroid of all the subimages in the image        ...

i accidently made a mistake in the code Pls change the loop while i <= count         % display centroid of all the subimages in the image        disp(features(i).Centr


hello phase unwrapping

Started by imythili18 in Matlab DSP18 years ago 1 reply

hello could someone help me out. I am doing 3D phase unwrapping of an image. Could anyone send me a program. and also how to do phase ...

hello could someone help me out. I am doing 3D phase unwrapping of an image. Could anyone send me a program. and also how to do phase unwrapping of an image in a step by step procedure. thank you


problem with mmreader command

Started by sal in Matlab DSP16 years ago

Hello; I need a help to solve the problem in reading a avi movie in matlab by mmreader. my avi movie has PVMJPG30 video compression and when I...

Hello; I need a help to solve the problem in reading a avi movie in matlab by mmreader. my avi movie has PVMJPG30 video compression and when I am reading it in matlab give me correpted images (Faults colors), when I show them, the image contents are totaly mixed (corrupted image). and when the file is big little bit, the matlab give me this error: ??? Out of memory. Type HELP MEMORY for you...


load multiple image files in matlab

Started by Anshu in Matlab DSP19 years ago 1 reply

Hi   I want to read around 100 image files into matlab. How can you do that?   Anshu

Hi   I want to read around 100 image files into matlab. How can you do that?   Anshu


Gray scale image of matrix

Started by Amit in Matlab DSP18 years ago 2 replies

Hi all, Assume you have a NxN doubly stochastic square matrix with the main diagonal elements have the highest probability score in the row...

Hi all, Assume you have a NxN doubly stochastic square matrix with the main diagonal elements have the highest probability score in the row and column they belong to. I wanted to know how to plot a gray scale image of the matrix where the gray scale shade of each element in the matrix is representative of the probability score of that element. Higher the probability score gives a darker ...


count cylinders in a image

Started by swee...@gmail.com in Matlab DSP15 years ago 1 reply

hi i am looking for a code to count number of cylinders in a truck,the cylinders are packed by 35 cylinders in a pallet,and 7 such pallets...

hi i am looking for a code to count number of cylinders in a truck,the cylinders are packed by 35 cylinders in a pallet,and 7 such pallets in a truck,i want to scan the truck by a camera and grab the video or snaps by camera for image processing and counting the number of cylinders when the truck pass by the camera. how to do this by a camera. should camera take a still snap of entire truck...


Cone Beam Image Reconstruction

Started by khairiahyazid in Matlab DSP19 years ago

hi, I just started doing some study on cone beam image reconstruction. I've download one cone beam matlab coding(iconebeam) from...

hi, I just started doing some study on cone beam image reconstruction. I've download one cone beam matlab coding(iconebeam) from Matlab Central.I try to study the FDK algorithm but I find it quite difficult to understand.So I am looking for anything that can help me to understand the algorithm(summary of the algorithm). Just wo


how do i execute this code for image compression in matlab?

Started by dictator_satya in Matlab DSP17 years ago

Hi, I am quite new to matlab and trying to write a function on digital image compression but i am getting an error message saying..... ???...

Hi, I am quite new to matlab and trying to write a function on digital image compression but i am getting an error message saying..... ??? Strings passed to EVAL cannot contain function declarations. %Main Routine function main(RGB, filename) figure(1) imshow(RGB) pause ; disp('SOURCE CODING ....................'); [H,S,V] =source_encoding(RGB, filename) disp('SOURCE CODING OV...


image processing

Started by vijetha_moolya in Matlab DSP17 years ago

Hi All, Can anybody tell me how to construct a priority queue of pixels based on their intensities.

Hi All, Can anybody tell me how to construct a priority queue of pixels based on their intensities.


probability density function

Started by swamigmv in Matlab DSP17 years ago

hello, can any one say how to get the PDF of an imsge with respect to some pixels taken from the same image(may be using its characteristics)

hello, can any one say how to get the PDF of an imsge with respect to some pixels taken from the same image(may be using its characteristics)


Imtool

Started by "ambika.shyam" in Matlab DSP16 years ago

Hi All, I want to explore the image with the imtool ...unfortunately its not working in my version 6.5 any idea ..how to...

Hi All, I want to explore the image with the imtool ...unfortunately its not working in my version 6.5 any idea ..how to proceed.. Thanks in Advance. AmikaShyam


Display 3d images

Started by samabia in Matlab DSP17 years ago

hello every body, Can any one tell how to read and display 3d image , that is with ".raw" extension,using matlab. waiting for ur reply

hello every body, Can any one tell how to read and display 3d image , that is with ".raw" extension,using matlab. waiting for ur reply


markov segmentation

Started by althou2000 in Matlab DSP19 years ago

I'm looking for a code to segment an image with a markov method. Do you have any idea where I could find it ? Thx Anne-Lise ...

I'm looking for a code to segment an image with a markov method. Do you have any idea where I could find it ? Thx Anne-Lise