Measuring on numerous images
Before each measurement, the images can either be newly acquired with your cam- era or you can load already saved images in successive image buffers. In both cas- es, please make sure that the image buffers list is always covered by the measure- ment display in the measurement environment. You can change the views at all times and again show the image buffer list. To do this, click on the List or Gallery tabs at the bottom of the image manager.
If you are offered too many tabs in the image manager, do the following: hide either the List or the Gallery tabs. Use the Special > Preferences > Image command. Even if the measure-
ment display covers the image buffer list, you maintain access to all the tabs of the image manager during mea- surement.
Create mea- surement sheet
Click the Create Measurement Sheet located in the measurement button bar to ex- port the measured values to a table. All measurement values are always exported from one image to one sheet. If you have done measurements on numerous images, decide whether or not the measurement values for each image are to be exported to individual sheets or if all the measurement values are to be exported to the same sheet.
Data in the measurement sheet
The measurement object's type and the measurement values are listed in the mea- surement sheet. All areas are, for example, written to one column even if they were defined with different methods. If you export the measurement values from numerous images into one sheet, the measurements of the same type will be written to one col- umn, e.g., all measured areas.
The unit of the measurement values in the measurement sheet corresponds to the unit in which the image has been calibrated. To change this unit, use the Image > Calibrate Image... command. If you are exporting the measurement values from var- ious images to one sheet, the unit for all the images from the image calibration of the active image buffer is adopted.
Editing sheets The possibilities of editing measurement sheets which have already been created is rather limited. You can alter the headers of the individual columns and hide values with the auto filter. You will find all commands which have to do with sheets in a sep- arate context menu You can open the menu by clicking on a sheet with the right mouse button.
Interactive Image Measurement Create measurement sheets - Step-by-step
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It is not possible to delete values or edit single values. In this case, you delete the measurement values either in the image or in the measurement display and create a new measurement sheet.
Step-by-step
This is how you measure numerous images
Distances are to be measured on numerous images and then later exported together to a sheet.
1) Load the images to be measured.
2) Click the Measurements Bar button located in the standard button bar to switch to the measurements environment.
3) Maximize the size of the image window so that you have the largest amount of space possible for displaying the image.
4) Click on the List or Gallery tabs located in the image manager, to show the im- age buffer with the loaded images.
5) Load the image to be measured from the image manager.
6) Measure the desired segments.
7) Repeat the last two steps for all the images on which you would like to make measurements.
8) Click on the Create Measurement Sheet button located in the measurement button bar.
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The Create Measurement Sheet dialog box opens. The Create Measure-ment Sheet dialog box lists all the images on which measurements have been made. The active image is marked. This is where you de- cide if the measurement results of numerous im- ages are to be exported to a common sheet or to separate sheets.
9) In the Create Measurement Sheet dialog box,click the Select All button to export the measurement results for all images.
Select Mark the Show image name in the first column check box to additionally acquire the names of the images in addition to the values into the sheet. You can thus match the individual measurement values in the export sheet clearly to an image when using numerous images.
Related Topics
This is how you delete single measurement values 114 Create sheet 119
Interactive Image Measurement Create measurement sheets - Step-by-step
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Clear the One sheet per image check box to write all the measured values to one sheet.
Confirm by clicking OK.
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The measurement sheet is created and displayed. In order to make the measurement sheet visible and to avoid having it covered by the image, your image analysis program automatically returns the image window to its original size.10) After the measurement has been completed, release the Measurements Bar
button.
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The measurement button bar is once again hidden.This is how you acquire a new image with a camera for each measure- ment
A series of images are to be sequentially acquired. Distances are to be measured on all the images.
1) Use the Special > Preferences... command. In the Images tab, select Image buffers (All) entry from the Image acquisition > Sequence list. Close the dialog box by clicking OK.
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Your image analysis program now automatically jumps to the next image buffer before each image acquisition. This prevents an already existing im- age from accidentally being deleted during an acquisition.2) Click the Measurements Bar button located in the standard button bar to switch to the measurements environment.
3) Maximize the size of the image window so that you have the largest amount of space for displaying the image possible.
4) Acquire an image: click the Acquire button to display the camera image live. In the live-image, look for an appropriate image structure and focus it.
Click the Snapshot button to acquire an image.
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You can also measure directly in the live-image. To do this, however, the live overlay must be activated. To do this, mark the Live overlay check box located in the Image > Configure Input > Display tab.The overlay can become rather confusing if you measure many values in the live-image. Click the button with the eraser symbol located on the stan- dard button bar to delete the overlay. The already measured values will not be deleted in doing so.
5) Measure the desired segments.
6) Repeat the last two steps for all the images on which you would like to make measurements.
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A new entry for each image is automatically created in the measurement display. As soon as you begin a measurement on a new image, all of the already existing measurements are reduced to the main entry in the tree view.Interactive Image Measurement Using Statistics Functions - Background information