Image Measurement Utility

Interactive tool allowing the measurement of distances, radii, and angles in images

Description

This tool is intended to aid measuring on images. In order to do this the image needs to have some visual scale to calibrate the pixel to length ratio on, e.g. scale bar, ruler.

It can measure:
- the distance between points
- the perpendicular distance between a line and a point
- the length of a spline
- the radius of a circle
- the angle of the intersection of two lines
All measurements can be deleted or modified afterwards.

The tool is intended for high quality measurements, and is therefore build around tools like "imline" from the image processing toolbox. These tools are powerful because they allow you to select, zoom, re-adjust, and than confirm your selection. Nevertheless, a "quick" selection option is added to allow measurements with less mouse clicks (also useful for users whom don't have the IP toolbox).

The tool can handle batches of images, allowing measurements on several images with only one calibration. This also allows for measurements where a different image was used to calibrate the scale on.

The results can be saved to the workspace and to a text file (which can be read in excel as a .csv). Additionally two image save options are provided, i.e. PNG and PDF, where the PNG version also anti-aliases the image.

Finally, help is provided in the form of a status bar guiding the user through the process, complemented with readable tooltips and a full help readme, accessible from the interface.

Acknowledgements

The author wishes to acknowledge the following in the creation of this submission:
area measuring, Image Measurement Utility

• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 7.9 (2009b)

[Jan Neggers]

I've posted an update to fix some minor bugs, awaiting review at the moment.

[prashanth]

this GUI is excellent. It can measure the distance between 2 points, perpendicular distance of a point from a line, angle between 2 lines. This GUI is fantastic.

[Till]

Hi Jan,
thanks for this nice tool. However, I have a question: I have gray scale TEM images in tif format. Your tool seems to convert them to RGB. I had a very short glance at the code, and think it is related to the call of imagesc in line 324. It might also be related to the specific format of my tif file. It would be nice, if you could comment on this.

[Jason Tolentino]

great program in analyzing TEM images. I wanted to know how difficult is it to save the data because I would like to do size distribution analysis on the saved data.

[Becky]

I am getting an error when I try to calibrate (see below). Can you offer any suggestions? I have an jpeg radiographic image.

??? Undefined function or method 'imline' for input arguments of type 'double'.

Error in ==> measuretool>Calibrate_Callback at 435
    h = imline(Data.gca,[u(1) v(1) ; u(2) v(2)]);

Error in ==> gui_mainfcn at 96
        feval(varargin{:});

Error in ==> measuretool at 41
    gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)measuretool('Calibrate_Callback',hObject,eventdata,guidata(hObject))

 
??? Error while evaluating uicontrol Callback

[Jan Neggers]

@Becky

If you don't have the function imline, then you probably have a matlab version older then 2009b, or maybe the function is provided by the image processing toolbox.

[GANESH Prabhakar]

superb tool ..Thank u

[Jakub]

Hi Jan,

Great tool. Would it be possible to add a feature to measure mean intensity of signal within line length.

cheers
jakub

[Jan Neggers]

Hi Jakub, i'll see what I can do, this is a little bit more complex as one might think since the intensity is stored in pixels which are discrete by nature, and the measurement lines do not follow pixel locations per se, so some interpolation is required.

[ling li]

wonderful

[Selcuk Fidan]

 

[Civil Eng]

 

[Civil Eng]

I am getting errors whatever I click