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How to know x value if I have y value from graph
I assume you will have the model which you used to fit the data and the coefficients. You can invert the model and find X from Y...

environ 8 ans il y a | 0

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How to find landmarks of a rotated image?
You can create a rotation matrix T and multiply the location vector of landmark points with T to find the locations of landmark ...

environ 8 ans il y a | 0

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Extraction of tumour, Dilation and Drawing a boundary around tumour
You have to normalize the image before passing it into the |im2bw| function. Please refer to the following answer <https://ww...

environ 8 ans il y a | 0

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Use image function to create heat map and 3D plot?
You can use the |cdata| property in the surface properties to assign vertex colors on a surface. figure,surf(X,Y,Z,'cdata',...

environ 8 ans il y a | 0

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Extraction of tumour, Dilation and Drawing a boundary around tumour
When you are binarizing the image using the |im2bw| function, it uses a level value to determine the threshold. The default valu...

environ 8 ans il y a | 0

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Delete circles and keep defects picture
Sound like his <https://www.mathworks.com/help/images/examples/detect-and-measure-circular-objects-in-an-image.html example> wil...

environ 8 ans il y a | 0

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what is the principle of griddata
You can open the code of |griddata| by entering |open griddata| in the command window. The different functions used and the refe...

environ 8 ans il y a | 0

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How to cover a cell array to mat?
As the error says the dimensions of each element of the cell array you are trying concatenate into a matrix are not consistent. ...

environ 8 ans il y a | 0

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How to find the local maxima/minima for 3D surf plot with the location of x and y coordinates?
You can use the |imregionalmax| function from the Image Processing Toolbox. The following answer will be useful to you. <https...

environ 8 ans il y a | 2

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VariableNames property must be a cell array
Since |importRunFromFileTRECFormat| is not a MATLAB in-built function, I believe you might have been using any custom function (...

environ 8 ans il y a | 0

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Gradient of a self defined function.
It looks like you are passing a vector to |myfunc| and it returns a scalar. Now you want to adjust the vector such that the scal...

environ 8 ans il y a | 0

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Recognizing "game stones" and returing positions in matrix
Since you are able to detect the field properly, by imposing the game field lines on to the image will help you to identify the ...

environ 8 ans il y a | 1

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Using edge detection to find map the pore structure of char
I think inorder to produce better edges, you may need better images also. If you have control over the image acquisition environ...

environ 8 ans il y a | 0

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Alter and store images back into an excisting imagedatastore
I can see that you are reading one image at a time (readSize=1). Hence the easy way is to write the image to the location specif...

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real time video background replacement
Most hardware will not allow you to acquire data from multiple sources simultaneously. This is a limitation imposed by the hardw...

plus de 8 ans il y a | 0

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How to compute the horizontal and vertical gradients of a gray-scale image without the use of imgradientxy()
Although this is not the best way of doing it, should also work fine. Please convert the original image to double before process...

plus de 8 ans il y a | 1

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Using listdlg and sprintf to create a GUI
The input argument must be a cell array of strings. Each element of the string cell array corresponds to a row in the list menu...

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Transcendental equation solution solution, graph plot.
If your implementation of the equations are right, then this might work close all clc; g = sqrt(8); ...

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ROS messages aren't getting through to the robot?
A possible issue is that your firewall software may be interfering and blocking some ports that are required for publishing ROS ...

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