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# LIU WEIHUA

### UTA

13 total contributions since 2011

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Question

I have a rgb level image, and I use function "rgb2gray" convert to gray level. After that I use the data cursor button to get a...

7 years ago | 2 answers | 0

### 2

Question

how to adjust the size of the cross
when I use 'plot' to draw a cross on a pixel in image, I found the cross sign is a bit large size that cover to much pixels, so ...

7 years ago | 2 answers | 0

### 2

Question

matlab trick
I have a folder which contain thousands of images, how can I load these image into a matrix with the size of (m,n,k), where m a...

8 years ago | 2 answers | 0

### 2

Question

matlab function
I have write a code to find the first pixel that not equal to zero and store the pixel position to M and N respectively as follo...

8 years ago | 3 answers | 0

### 3

Question

matlab function
First I write a function as follow: syms x y z f = [x*y*z; y; x + z]; v = [x, y, z]; R = jacobian(f,...

8 years ago | 1 answer | 0

### 1

Question

matlab function
when I use the function below: syms x y z f = [x*y*z; y; x + z]; v = [x, y, z]; R = jacobian(f, v); the...

8 years ago | 1 answer | 0

### 1

Question

Conversion between image pixel and the millimeter
I get a image with matlab, how can I know the conversion between the image pixel and the millimeter. Does the different resol...

8 years ago | 1 answer | 0

### 1

Question

when using GUI , I use Axes to load images, and load the first image successfully, however,when I load the second image, it bec...

8 years ago | 1 answer | 0

### 1

Question

image convert question
There has an image with name of depthFrame, which can be show by using function imshow(depthFrame []); the value of depthFrame i...

8 years ago | 1 answer | 0

### 1

Question

I capture a few depth images from Kinect with format of .tif. However,when I use data cursor to get the depth information, it sh...

8 years ago | 2 answers | 0

### 2

Question

matlab question with sym
When I using the function of 'norm' with norm(F,Inf),the command window shows a line of the words with "Undefined function or me...

8 years ago | 1 answer | 0

### 1

Question

simple math question
There has a function can be written as: y=H*[X,Y,1]'. where [X,Y,1]is known constants. I want finding the derivatives of the s...

8 years ago | 1 answer | 0