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dev:desktop:preferences:roadmark_detection [2021/04/16 11:22] paulien [Output] |
dev:desktop:preferences:roadmark_detection [2023/05/30 14:53] karen removed |
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This page describes only the parameters and preferences of Roadmark Detector. \\ | This page describes only the parameters and preferences of Roadmark Detector. \\ | ||
- | Full documentation about semi-automatic detectors, see [[dev: | + | Full documentation about semi-automatic detectors, see [[dev: |
- | General concepts of Detectors Preferences, | + | |
+ | {{orbitgis: | ||
+ | ===== Concepts ===== | ||
- | ===== Algorithm ===== | ||
- | In process of detecting a cable is modeled as sequence of line segments which should meet certain criteria.\\ | ||
- | === Search Margin === | + | ===== Algorithm ===== |
+ | |||
+ | ==== Search Margin | ||
The horizontal margin to search for the next segment. | The horizontal margin to search for the next segment. | ||
- | === Mark Width Max === | + | ==== Mark Width Max ==== |
The maximum width of a mark. | The maximum width of a mark. | ||
- | === Mark Width Min === | + | ==== Mark Width Min ==== |
The minimum width of a mark. | The minimum width of a mark. | ||
- | === Segment Sections Length === | + | ==== Segment Sections Length |
- | A segment of the road is detected by detecting multiple adjacent small sections. | + | A segment of the road MARK(?)is detected by detecting multiple adjacent small sections. |
- | === Segm Section Ground Margin === | + | ==== Segm Section Ground Margin |
Ground margin for segments sections of line. | Ground margin for segments sections of line. | ||
- | === Segment Section Side Step === | + | ==== Segment Section Side Step ==== |
The position of a small section is projected from the previous, then moved sideways by this side step. | The position of a small section is projected from the previous, then moved sideways by this side step. | ||
- | === Reflectivity | + | ==== Reflectivity |
- | The reflectivity | + | The reflectivity |
- | === Dashed Lines === | + | ==== Dashed Lines ==== |
- | == High Reflective Pts Percentage == | + | === High Reflective Pts Percentage |
- | The reflectivity treshold to get a new segment is a percentage of the average intensity of last segment points. | + | Use this percentage of higher reflectivities to calculate next reflectivity threshold. eg. next threshold is the average intensity of 10% higher intense point multiplied by intensity threshold parameter. |
- | == Consecutive Segs Null Max == | + | === Consecutive Segs Null Max === |
Maximum number of consecutive null segments. | Maximum number of consecutive null segments. | ||
- | == PC Pixel Size == | + | === PC Pixel Size === |
Increase pixel size to reduce number of point cloud points used. | Increase pixel size to reduce number of point cloud points used. | ||
- | === Solid Lines: Gap Distance Max === | + | ==== Solid Lines: Gap Distance Max ==== |
The length of the maximum gap on a solid road mark. | The length of the maximum gap on a solid road mark. | ||
- | ===== Output ===== | + | ====== Output |
- | === Feature Lengt Max === | + | ==== Feature Lengt Max ==== |
The maximum length for a feature. Detection continues as far as possible if this value is zero. | The maximum length for a feature. Detection continues as far as possible if this value is zero. | ||
- | === Final line Distance Points === | + | ==== Final line Distance Points |
Distance between the points on the final line | Distance between the points on the final line | ||
- | === Dashed Lines: Resturn Dashed Line Segments === | + | ==== Dashed Lines: Resturn Dashed Line Segments |
Should a dashed line be segmented into its units? | Should a dashed line be segmented into its units? |