Counter
Description
The counter tool is designed to keep track of the number of results that meet specific conditions from the outputs of selected tools. It acts as an attachment to other tools, and its primary purpose is to provide a count of results that satisfy certain criteria. The count obtained from the counter tool can be utilised as a condition in the If-Then tool, enabling the user to make decisions or perform actions based on the result count.
Settings
Nara UI
See Tool Flow - Counter Tool on how to add a counter tool to the tool flow.
Comparison Tool
The reference tool of the results used for the comparison. The results of the comparison tool are used as the basis for counting.
Input Tool
Referencing to inputs, only compare (only enabled) if the input is selected.
Period unit
The unit for the count period to last.
- Frame: The count period is based on the number of frames.
- Second: The count period is based on the number of seconds.
Period amount
This represents the quantity or amount of the count period based on the selected period unit.
Example:
Let's consider the Frame as the period unit, and the user has provided a table indicating the count for each frame:
| Current frame | frame - 1 | frame - 2 | frame - 3 | frame - 4 |
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 |
If the user sets the period amount to 4, it means they want to know the total count over a period of four frames. In this case, the total count is obtained by adding the counts in each frame within that period:
1 + 2 + 3 + 4 = 10
So, setting the period amount to 4 gives a total count of 10 over four frames.
Filters
The counter number is counted by the number of results that passes the filters. Each of the tool have different starting count value, this can be 1 for the Input Tools or the detected objects count for most of the Process Tools, (See Tool Results Comparison for more details).
Depending on the tool, the filter may be different, please see each specific tool for details on the filter.
Invert Result
Invert the result of the filter. If the result of the filter is true, it will be counted as false and vice versa.
For the filter that counts, if the invert result is set and the count is more than 0, it will be counted as 0.
Types of Filters (Result Types)
Run Success
Whether the tool ran successfully or not.
Frame Width
Whether the width of the frame is within the specified range or not.
Frame Height
Whether the height of the frame is within the specified range or not.
Frame existed (Is Frame)
Whether the frame existed or not.
Is Connected
Whether the device is connected or not.
Temperature Celsius
Whether the temperature of the device is within the specified range or not.
Temperature Status
Whether the temperature status of the device equals the specified status or not.
Date and Time
Whether the date and time of the device is within the specified range or not.
If Result
Whether the result of the If tool is successful or not.
Detected Points RoI
Whether the detected points are within one or more specified regions of interest.
Binary frame on (white) area in pixels
Whether the white area in the binary frame is within the specified range.
Binary frame on (white) area ratio to frame
Whether the white area in the binary frame is within the specified ratio to the frame.
Nara UI
The user can draw a region of interest in the box provided. This box can be empty, this will be shown is an empty black frame.
The RoI points drawn in the box are normalised to the frame size from 0.0 to 1.0. The top left corner of the frame is (0.0, 0.0) and the bottom right corner of the frame is (1.0, 1.0).
Nara UI
For ease of use the user can drag the image from the frame view to the Drag image here or click to select a file box (shown by the red arrow in the image above). This will automatically add that image to the box.
Object RoI Position
The position of the detected object where it is counted from. The following positions are available:
- Total: All the points of the detected object must be within the region of interest.
- Top: The top point of the detected object must be within the region of interest.
- Centre: The centre point of the detected object must be within the region of interest.
- Bottom: The bottom point of the detected object must be within the region of interest.
In the example above shows the points of the detected object (yellow) and each positions (purple), top, centre and bottom. For the total position, all the points of the detected object (yellow area) must be within the region of interest.
Overlay RoI
Whether to draw the region of interest on the frame or not. This will draw the lines between the points of the region of interest.
Detected Width
Whether the detected objects are within the width the specified ranges.
Detected Height
Whether the detected objects are within the height the specified ranges.
Detected Class
Whether the detected objects class are equal the specified classes.
Detected Text
Whether the detected objects text are equal the specified texts.
Detected Score
Whether the detected objects score are within the specified ranges.
Detected Confidence
Whether the detected objects confidence are within the specified ranges.
Polygon
Whether the detected objects are equal to the specified polygons.
Radius
Whether the detected objects radius are within the specified ranges.
Matched Index
Whether the detected objects matched index are equal to the specified indexes.
Code Type
Whether the detected objects code type are equal to the specified code types.
Tool Results Comparison
The following are tools and their results that can be used for comparison.
Note that not all the tools have the results that can be used for comparison.
Tools - Inputs
File
Started count value is 1.
Folder
Started count value is 1.
Webcam
Started count value is 1.
IP Camera
Started count value is 1.
Basler Camera
Started count value is 1.
Tools - Processes
Colour Detection7
Started count value is the detected objects.
- Run Success
- Detected Points RoI
- Detected Width
- Detected Height
- Binary frame on (white) area in pixels
- Binary frame on (white) area ratio to frame
Polygon Detection
Started count value is the detected objects.
Watershed Segmentation
Started count value is the detected objects.
Circle Detection
Started count value is the detected objects.
Feature Matching
Started count value is the detected objects.
Image Similarity
Started count value is the detected objects, this is 1.
1D-2D Code Reader
Started count value is the detected objects.
OCR
Started count value is the detected objects.
Image Classification
Started count value is the detected objects, this is 1.
Object Detection
Started count value is the detected objects.
Semantic Segmentation
Started count value is the detected objects.
Face Detection
Started count value is the detected objects.
Face Recognition
Started count value is the detected objects.
Key Points Detection
Started count value is the detected objects.
Pose Estimation
Started count value is the detected objects.
Number Plate Reader
Started count value is the detected objects.
Fire Detection
Started count value is the detected objects.
General Object Detection
Started count value is the detected objects.
Maximum count reset
Reset the count to 0 when the maximum count is reached.