Comparison Tools - Scans and Models

Use the following steps to compare scans and models in Cintoo.

TABLE OF CONTENTS

• Selecting Data Sets to Compare
• Using the Visual Difference Tool
• Explaining the Color Map Tolerancing
• Using the Visual Check Tool
• Closing the Comparison Tool

Selecting Data Sets to Compare

1. In the Work Zone Explorer, confirm that the Work Zones containing the data sets you want to compare are toggled on, and the 3D data is visible in the 3D View.

2. If the 3D View is open in "3D Navi" mode, switch to "Scan & Teleport" and set the display setting to "3D RGB."

3. Click the "Comparison Tools" icon in the left toolbar.

4. In the "Selection" field, assign which scans (or "All Scans") will be used "To Compare," and which model (or "All Models") will be used for "Reference." Your selections in the Comparison Tool will be limited to whichever Work Zones and sub-Work Zones are toggled on in the Project Explorer. 

Using the Visual Difference Tool

1. Toggle on the "Visual Diff Tool." A heat map will be generated that highlights the differences between the scan data and model data.

2. Set the unit of measurement by toggling between "Feet" or "Meters." 

3. By default, the heat map will be displayed in "Flat Shading" mode, or bi-color/green-red. You can change the display setting to a gradient by selecting "Soft Shading."

4. Modify the "Distance Adjustment" setting to adjust the tolerance range by using the slider or by typing a value.(In this example, from ± 0,150m down to ± 0,100m)

Fine-tune modifications can be made to the "Distance Adjustment" setting by hovering the mouse cursor over the value and using the mouse scroll wheel + SHIFT/ALT key to increase or decrease the value in smaller increments.

The Visual Difference Tool will colorize either the scan data or model data based on which information is in front, superimposed, or behind the other in the viewer’s line of sight. In this example of scan vs. model, the scan data is colorized:

Explaining the Color Map Tolerancing

All comparisons are based in a range field of tolerancing (Standard Reference ASME 14.5Y-2078):

• Hot Colors (between Green and Red: [Yellow, Orange, Red]) means that the point cloud is above the surface of the BIM Model until the border of the tolerancing field (in Red).
• Cold Colors (between Green and Blue [Blue Green, Cyan, Dark Blue]) means that point cloud is under the surface of the BIM Model until the border of the tolerancing field (in Dark Blue).

• Everything red is in front of the BIM model at a distance higher than the value defined in the "Distance Adjustment" setting.
• Everything green means that the scan data and the BIM model are within the range of the value defined in the "Distance Adjustment" setting.
• Everything blue is behind the BIM model at a distance higher than the value defined in the "Distance Adjustment" setting.

Using the Visual Check Tool

1. Toggle on the "Visual Check Tool."

2. Use the "Visibility" slider to control the transparency/opacity of each data set being compared.

When the slider is moved all the way to the left, only the data set as "To compare" will be visible on the screen.

When the slider is moved to the middle, both data sets being compared are visible (i.e. the opacity of each one is 100% and both of them are be visible)

When the slider is moved all the way to the right, only the data set as "Reference" will be visible on the screen.

3. Color overrides can be applied to each data set in the 3D View to easily identify which elements belong to which data set.

Closing the Comparison Tool

Before closing out of the Comparison Tool, be sure to click "Reset" to set all values back to their default state, toggle off the "Visual Diff Tool" and "Visual Check Tool," and clear out the "To Compare" and "Reference" selection fields.

Make sure to uncheck or unclick all activated buttons on the Comparison Tool.

The 3D View should return to its original state as shown in the example below: