Linked Questions

103
votes
3answers
13k views

Recovering data points from an image

Unfortunately, some data can only be obtained in picture form (Japanese publications anyone?). Since this cannot be worked with, it has to be converted to a dataset that can; I was wondering whether ...
51
votes
5answers
10k views

How can I extract data points from a black and white image?

Consider the following graph (source): Is there any way to extract the data points from this image in a semi-automatic way? I have seen, and tried the methods suggested in this question, but they did ...
13
votes
4answers
5k views

How do I find the coordinates of points in this image?

I have never used image processing with Mathematica. I need to get the coordinates of the red points from this image I made in Illustrator. Is there a way to get Mathematica to read or detect the x-...
13
votes
2answers
523 views

Extracting data from analog screen photograph

I'm using an analog profilometer from the 1970s and need a way to digitize the data and the only way is through a photograph. I've searched but all I could find was how to extract data from computer ...
5
votes
2answers
603 views

I want to get a special curve in a picture

I have a picture,and I want to get a special curve in this picture ,than draw the line in a new picture.inbut I can't do this . Like this: The picture is this Anybody have an idea?
11
votes
1answer
660 views

How can I extract data from a diagram?

Below you will see a diagram containing three curves. How can I extract data points from the three colored curves? I need to use the original data.
5
votes
2answers
3k views

Best fit equation from a scanned image

I am trying to extract a curve from a scanned graph and find a best fit equation. For example, starting from: How could one find an equation starting from the image file ?
10
votes
1answer
218 views

Importing Graphics from an Online Paper

I'm trying to reproduce a few graphs in Mathematica after running my Fortran code. Ideally, I want exact quantitative agreement with the results already published in the literature. For example, I am ...
3
votes
2answers
810 views

How can I find the surface area of an image in mathematica?

Would I binarize the image and then find the area of the irregular shape?
9
votes
1answer
796 views

Obtain Data points from a graph on an image without axes

I have the following image: (which is a oscillation of the "magnetic susceptibility of gold" in y-direction, in arbitrary units, over the "magnetic field strength" from bmin = 36540 Gauss to bmax = ...
5
votes
2answers
641 views

How can I extract trace points from an oscilloscope image?

I have the following oscilloscope image: I would like to extract the points of the yellow curve together with the correct values. Do you know how I could do it? Extracting the yellow curve from the ...
3
votes
2answers
253 views

Numerical solution of an iterative equation

I am trying to solve the following iterative equation: where the parameter tao (needed in the previous equation) is defined as: Here's the parameters and my approach to solving the equation in ...
3
votes
2answers
129 views

How to get sliders in a row in manipulate?

Manipulate[v + t, {v, 0, 1}, {t, 0, 1}, ControlPlacement -> Left, ControlType -> VerticalSlider] puts the second slider below the first one. How ...
2
votes
0answers
367 views

How to extract data points from an image of a log log plot? [duplicate]

I have a picture of a log-log plot, taken from a paper and I want to extract the data points so I will be able to plot them again along with results of my own solution. I would appreciate your help. ...
3
votes
1answer
112 views

Distance between two points in a picture

I have this picture: I'de like to obtain the distance between two of these points. The black scale bar is 3$\mu m$. To do so, I import the image to Mathematica and call it pic. Then by finding ...

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