Question

about image pixel information

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

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

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

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

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

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

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

Question

load multiply image on GUI

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

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

Question

about read depth information from Kinect

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

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

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

Question

question about distance of the image

I want to change the pix distance of the image with Millimeter. In other words, what is the conversion from a pix length to mi...

8 years ago | 1 answer | 0