Processing files and file names before reconstructing

MuhRec offers a tool to rename and combine sets of files. This is useful when you have

1. Interrupted scans, where the restarted scan has a new location and restarted file indexing.
2. Scans with repeated takes on the same position and you want to merge all repeats into single files.
3. Reordering golden ratio scans into a sequence scan.

You reach the file conversion tool from the File menu

Combining multiple subscans

1. Use the '+' button to add image data sets

The following dialogue appears

2. Selected data sets appear in the data sets list. You can drag and drop the data set to rearrange them if you need to order them differently.

3. Set the Output information.

4. Press Start conversion to rename the data sets into the specified location.

Reducing repeated takes into single images

1. Select at least one data set like in the sub-scan case.
2. Activate the Combine images

3. Select how many images to combine using the step field. The dialog will tell how well the step size matches the number of available images. The rest should be zero for a perfect match.
4. Select combination method
   • Sum - Sums the images
   • Average - Computes the average of the images. This is outlier sensitive.
   • Median - Computes the median of the selection. Suppresses outliers but is statistically incorrect, the SNR is lower than with an average.
   • Weighted Average - Computes a weighted average based on the local variance. Suppresses outliers and approaches the true average.
   • Min - Computes the minimum among the selected images
   • Max - Computes the maximum among the selected images
5. Set the output information (destination path, file mask, and first index)
6. Click the Start conversion button.

Rearranging a golden ratio scan

1. Select at least one data set like in the sub-scan case.
2. Use the combo box for scan order to select golden ratio

3. Select scan length 180 or 360 degrees
4. Set the file index of the first projection in the golden scan.
5. Set the output information (destination path, file mask, and first index)
6. Click the Start conversion button.