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Add rollingsum filter for frame analysis based on column mean deviation

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- Implements GStreamer element that analyzes pixel columns
- Drops frames when column mean deviates from rolling baseline
- Configurable window size, column index, stride, and threshold
- Includes design documentation and build script
- Tested successfully with IDS uEye camera source
This commit is contained in:
yair
2025-11-14 03:44:54 +02:00
parent 15871ea9fb
commit 69dcea025e
13 changed files with 1679 additions and 1 deletions
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27
README.md
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@@ -2,6 +2,32 @@
GStreamer plugins related to the field of machine vision.
we only care for ids,
run using
```
gst-launch-1.0 idsueyesrc config-file=whole-presacler64_autoexp-binningx2.ini ! queue ! autovideosink
```
drop frame if sum of image is bigger then 0.5
```
gst-launch-1.0 idsueyesrc config-file=whole-presacler64_autoexp-binningx2.ini ! videoconvert ! video/x-raw,format=GRAY8 ! rollingsum window-size=1000 column-index=1 threshold=0.5 ! queue ! autovideosink
```
**Note:** The `rollingsum` element analyzes a single column of pixels and drops frames when the column mean deviates from the rolling mean baseline by more than the threshold. Use `videoconvert` to ensure proper format negotiation.
Additional examples:
```bash
# Analyze column 320 with larger window
gst-launch-1.0 idsueyesrc config-file=whole-presacler64_autoexp-binningx2.ini ! videoconvert ! video/x-raw,format=GRAY8 ! rollingsum window-size=5000 column-index=320 threshold=0.3 ! queue ! autovideosink
# Use stride for faster processing (sample every 2 rows)
gst-launch-1.0 idsueyesrc config-file=whole-presacler64_autoexp-binningx2.ini ! videoconvert ! video/x-raw,format=GRAY8 ! rollingsum window-size=1000 column-index=1 stride=2 threshold=0.5 ! queue ! autovideosink
# Lower threshold for more sensitive detection
gst-launch-1.0 idsueyesrc config-file=whole-presacler64_autoexp-binningx2.ini ! videoconvert ! video/x-raw,format=GRAY8 ! rollingsum threshold=0.2 ! queue ! autovideosink
```
## Image acquisition elements
@@ -35,6 +61,7 @@ GStreamer plugins related to the field of machine vision.
- extractcolor: Extract a single color channel
- klvinjector: Inject test synchronous KLV metadata
- klvinspector: Inspect synchronous KLV metadata
- rollingsum: Drops frames based on rolling mean analysis of a single column
- sfx3dnoise: Applies 3D noise to video
- videolevels: Scales monochrome 8- or 16-bit video to 8-bit, via manual setpoints or AGC