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Yuzhen Lu


Last seen: 22 days ago
15 total contributions since 2016

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Question


How to extract numeric values from char
I have 9*1 column cell C. Here is the contents: {'{"name":"rect","x":101,"y":30,"width":239,"height":244}'} {'{"name"...

23 days ago | 1 answer | 0

1

answer

Question


How to peform multiple paired-t tests
To my knowledge ttest.m can be used to peform a single parired t test, e.g., ttest(x,y), and the function can also be used f...

12 months ago | 1 answer | 0

1

answer

Question


how to add a dynamically updated progress bar in a GUI window
I am trying to add a dynamic progress bar in a GUI. I note there are some solutions available (How to add progress bar control t...

1 year ago | 0 answers | 0

0

answers

Question


How to fix coding method (e.g.,'onevsall') in performing hyperparameter optimzation in multi-class svm (i.e., fitcecoc.m)
The function fitcecoc.m allow to optimize hyperparamters for multi-class svm by seting up the parameter-vlaue pairs for 'Optimiz...

1 year ago | 1 answer | 0

1

answer

Question


Faster rcnn with Caffe: Matlab encounters an intenral problem and needs to close
This post is same as that I post in Stackoverflow at <https://stackoverflow.com/questions/50798740/faster-rcnn-with-caffe-cannot...

1 year ago | 0 answers | 0

0

answers

Question


Object alignment for a moving object in the two consecutiely acquired images
I have two images acquired from a moving object. The object is moving in a fixed direction (from left to right in the image) in ...

2 years ago | 0 answers | 0

0

answers

Question


Why does hilbert tranformer give a phase-shifted but amplitude-reduced signal?
I have performed hilbert transform by using a FIR hilbert filter rather than the matlab built-in hilbert function. An example co...

2 years ago | 1 answer | 0

1

answer

Question


How to perform Hilbert transform by using fir hilbert transformer coefficient
I just read a paper which gives a 7-element FIR Hilbert transformer: [-0.1270413, 0 -0.6012845, 0, 0.6012845, 0, 0.1270413...

2 years ago | 0 answers | 0

0

answers

Question


Use low-level functions (not imread.m) to read an grayscale image
I try to use low-level functions (fopen.m and fread.m) to read a grayscale image of uint16 in tiff format as follows: fid...

3 years ago | 1 answer | 0

1

answer

Question


Plot a 3D matrix for a three-dimensional object
I have obtained a 3D matrix A(:,:,3) for the geometry of an object. A(:,:,1) is a matrix corresponding to x coordinates in the w...

3 years ago | 2 answers | 0

2

answers

Question


2D interpolation in a specific region in a given image
I am going to perform two-dimensional (2D) interpolation in a region of interest (ROI) in an image as shown below. <</matlabc...

3 years ago | 1 answer | 0

1

answer

Question


Image segmentation of a fringe pattern image to extract the fringe area
I am going to extract the fringe area from a fringe pattern image shown below. The image is highly contrasted with distinctive b...

3 years ago | 1 answer | 0

1

answer

Question


Matlab how to read txt data in a specific format into the workspace
My txt file is organized in the following format: image filename n (number of objects of interest in the image) boun...

3 years ago | 1 answer | 0

1

answer

Question


how to convert a decimal number within (0, 255) to a 8-bit binary number?
Assume a decimal number 100, it should be converted to 01100100 rather than 01100100 by dec2bin.m. Is there any efficient way...

3 years ago | 1 answer | 0

1

answer

Question


how to generate a color histogram by concatenating the higher order two bits of each color component
I want to use matlab to generate a color histogram. The standard way to do that is to concatenate the higher order two bits for ...

3 years ago | 3 answers | 0

3

answers