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Valeska Pearson


North-West University

18 total contributions since 2013

Professional Interests: image processing

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Question


How to implement LAB color space to detect yellow in image?
>>Hello, I need some help to detect yellow exudates in a retinal image. LAB or HSV colour space can be used. I have chosen the L...

3 years ago | 0 answers | 0

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answers

Question


How to reference in a warning string to the name that changes depending on the result?
Hi this is my code: SimuFILE=SystemLib.Type; ActiveValue=char(Comms_LB1_content(Comms_LB1_index)); ff=load([ActiveValue...

5 years ago | 0 answers | 0

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answers

Question


How to plot ROC curve for SVM classifier results?
Hello experts, I need urgent help please. I have training data en test data for my retinal images. I have my SVM implemented...

6 years ago | 1 answer | 0

1

answer

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How to obtain AUC for different sample sizes of training data and do comparisons with sensitivity and specificity?
Hello, I need some urgent advice. WHen I have a SVM classifier implemented, I want to make conclusions from this by varying ...

6 years ago | 0 answers | 0

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answers

Question


How to train SVM that contains data with NAN or 0 values
Hello Matlab experts, I need some help with the following. I am using SVM and in my feature extraction I obtain area of abnor...

6 years ago | 0 answers | 0

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answers

Question


How can I make output on a pushbutton diplay results in GUI
Hello awesome folks, I need an answer for the following. I have a GUI design which is used to demonstrate medical image proce...

6 years ago | 0 answers | 0

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answers

Question


How to add buttons on output image from GUI
Hello I would be so thankful if you can answer the following. I have an output image from image processing. There is then 3 ci...

6 years ago | 0 answers | 0

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answers

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How to work with GUI data , perform functions and see output in workspace?
Hello, I would really appreciate if I can have some help. I have designed a GUI for my digital image processing project. I a...

6 years ago | 1 answer | 0

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answer

Question


How to save all the figures with the result of image processing
Hi, I have a question regarding working with a lot of results from image processing. All of the feature extraction results ar...

6 years ago | 0 answers | 0

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answers

Question


How can Matlab make a title for all figures, according to the "imread" input image.
I'm doing image processing on images, and a lot of figures are plotted. I am reading in one image at a time in, perform some fun...

6 years ago | 1 answer | 0

1

answer

Question


How to index filenames correctly?
Please help if you have the answer. I have .png images, which I want to read randomly and send to a function which will perfo...

6 years ago | 1 answer | 0

1

answer

Question


How to obtain the correct data points to fit circle for optic disk detection
Please help, I am struggling to get this right: I have obtained a thresholded image, which is in binary image format. My prob...

6 years ago | 0 answers | 0

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answers

Question


How to count exudates in retina binary image?
I 've got the following retina images, after implementing LAB and applying segmentation, I've got a binary image. The white is t...

6 years ago | 1 answer | 0

1

answer

Question


Colour Segmentation in LAB colour space
Please help. I need some help to do yellow segmentation from my retina images. The goal is to use the LAB colour space, and the...

6 years ago | 2 answers | 0

2

answers

Question


How to normalize an image?
Hello digital image processing people, I have a dataset of retinal images from the eye. I need to normalize them before proce...

6 years ago | 0 answers | 0

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answers

Question


zero-mean deviation on image
I can find to obtain the right output, after doing the statistical normalization on retinal image. It is to standardize all imag...

6 years ago | 0 answers | 0

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answers

Question


Normalizing by means of zero-mean
Hello friends, I am working on retinal images and need to make them standard before processing, because some images are dark ...

6 years ago | 2 answers | 0

2

answers

Question


How to implement convolution instead of the built-in imfilter
m=13; n=13; sigma=15; [h1 h2]=meshgrid(-(m-1)/2:(m-1)/2, -(n-1)/2:(n-1)/...

6 years ago | 1 answer | 0

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answer