Add yolo11s/yolo26s support and model-proc handling in multistream sample

Add new supported models (yolo11s, yolo26s) to the multi-stream sample and README. Generalize README note to instruct downloading required models to $MODELS_PATH/public/{model_name}/FP16 and list supported models plus an additional example. Update multi_stream_sample.sh help text and defaults to include the new models, add empty model-proc entries for them, and simplify/robustify model-proc handling: only call realpath and append model-proc when a model-proc file is set, otherwise omit the model-proc parameter from model arguments.

Author: dmichalo

samples/gstreamer/gst_launch/multi_stream/README.md

@@ -7,8 +7,8 @@ It combines four pipelines. By default, the first two streams run on NPU [Intel
 This sample utilizes GStreamer command-line tool `gst-launch-1.0` which can build and run GStreamer pipeline described in a string format.
 The string contains a list of GStreamer elements separated by exclamation mark `!`, each element may have properties specified in the format `property`=`value`.
 
-> **NOTE**: Before running, download the yolov8s model to `$MODELS_PATH/public/yolov8s/FP16/`.
-Please follow instruction: [Detection with Yolo](./gst_launch/detection_with_yolo/README.md) how to download Yolov8s model.
+> **NOTE**: Before running, download the required models to `$MODELS_PATH/public/{model_name}/FP16/`.
+Please follow instruction: [Detection with Yolo](./gst_launch/detection_with_yolo/README.md) how to download YOLO models.
 
 This sample builds for GStreamer a pipeline of the following elements:
 * `filesrc`
@@ -17,6 +17,9 @@ This sample builds for GStreamer a pipeline of the following elements:
 * [gvadetect](../../../../docs/source/elements/gvadetect.md) uses for full-frame object detection and marking objects with labels
 * [gvawatermark](../../../../docs/source/elements/gvawatermark.md) for points and visualization of their connections
 * `autovideosink` for rendering output video into screen
+
+**Supported models**: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c, yolo11s, yolo26s
+
 > **NOTE**: Each of the two pipelines can run on CPU or GPU or NPU.
 > **NOTE**: `sync=false` property in `autovideosink` element disables real-time synchronization so pipeline runs as fast as possible
 
@@ -39,6 +42,12 @@ Next example uses CPU device and YOLOv8 model for the first two streams and GPU
 ./multi_stream_sample.sh video.mp4 CPU GPU yolov8s yolov9c
 ```
 
+Another example uses NPU device and YOLO11 model for the first two streams and GPU and YOLO26 model for two other streams.
+
+```sh
+./multi_stream_sample.sh video.mp4 NPU GPU yolo11s yolo26s
+```
+
 ## Multi-stream Pipeline Templates
 This section lists example command line templates to constructs multi-stream pipelines.
 

samples/gstreamer/gst_launch/multi_stream/multi_stream_sample.sh

@@ -25,8 +25,8 @@ if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
   echo "  INPUT             - Input source (default: Pexels video URL)"
   echo "  DEVICE_STREAM_12  - Device for stream 1 & 2 (default: NPU). Supported: CPU, GPU, NPU"
   echo "  DEVICE_STREAM_34  - Device for stream 3 & 4 (default: GPU). Supported: CPU, GPU, NPU"
-  echo "  MODEL_1          - Model for stream 1 & 2 (default: yolov8s). Supported: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c"
-  echo "  MODEL_2          - Model for stream 3 & 4 (default: yolov8s). Supported: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c"
+  echo "  MODEL_1          - Model for stream 1 & 2 (default: yolov8s). Supported: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c, yolo11s, yolo26s"
+  echo "  MODEL_2          - Model for stream 3 & 4 (default: yolov8s). Supported: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c, yolo11s, yolo26s"
   echo "  OUTPUT           - Output type (default: file). Supported: file, json"
   echo ""
   exit 0
@@ -35,8 +35,8 @@ fi
 INPUT=${1:-"https://videos.pexels.com/video-files/1192116/1192116-sd_640_360_30fps.mp4"}
 DEVICE_STREAM_12=${2:-"NPU"}    # Supported values: CPU, GPU, NPU
 DEVICE_STREAM_34=${3:-"GPU"}    # Supported values: CPU, GPU, NPU
-MODEL_1=${4:-"yolov8s"}         # Supported values: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c
-MODEL_2=${5:-"yolov8s"}         # Supported values: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c
+MODEL_1=${4:-"yolov8s"}         # Supported values: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c, yolo11s, yolo26s
+MODEL_2=${5:-"yolov8s"}         # Supported values: yolox-tiny, yolox_s, yolov7, yolov8s, yolov9c, yolo11s, yolo26s
 OUTPUT=${6:-"file"}             # Supported values: file, json
 GSTVA="VA"
 
@@ -57,8 +57,10 @@ declare -A MODEL_PROC_FILES=(
   ["yolox-tiny"]="../../model_proc/public/yolo-x.json"
   ["yolox_s"]="../../model_proc/public/yolo-x.json"
   ["yolov7"]="../../model_proc/public/yolo-v7.json"
-  ["yolov8s"]="../../model_proc/public/yolo-v8.json"
-  ["yolov9c"]="../../model_proc/public/yolo-v8.json"
+  ["yolov8s"]=""
+  ["yolov9c"]=""
+  ["yolo11s"]=""
+  ["yolo26s"]=""
 )
 
 if ! [[ "${!MODEL_PROC_FILES[*]}" =~ $MODEL_1 ]]; then
@@ -71,16 +73,16 @@ if ! [[ "${!MODEL_PROC_FILES[*]}" =~ $MODEL_2 ]]; then
 fi
 
 #### Model #1
-MODEL_1_PROC=""
-if ! [ -z ${MODEL_PROC_FILES[$MODEL_1]} ]; then
-  MODEL_1_PROC=$(realpath "${MODEL_PROC_FILES[$MODEL_1]}")
+MODEL_1_PROC="${MODEL_PROC_FILES[$MODEL_1]}"
+if [ ! -z "$MODEL_1_PROC" ]; then
+  MODEL_1_PROC=$(realpath "$MODEL_1_PROC")
 fi
 MODEL_1_PATH="${MODELS_PATH}/public/$MODEL_1/FP16/$MODEL_1.xml"
 
 #### Model #2
-MODEL_2_PROC=""
-if ! [ -z ${MODEL_PROC_FILES[$MODEL_2]} ]; then
-  MODEL_2_PROC=$(realpath "${MODEL_PROC_FILES[$MODEL_2]}")
+MODEL_2_PROC="${MODEL_PROC_FILES[$MODEL_2]}"
+if [ ! -z "$MODEL_2_PROC" ]; then
+  MODEL_2_PROC=$(realpath "$MODEL_2_PROC")
 fi
 MODEL_2_PATH="${MODELS_PATH}/public/$MODEL_2/FP16/$MODEL_2.xml"
 
@@ -94,8 +96,18 @@ if [ ! -f $MODEL_2_PATH ]; then
   exit 
 fi
 
-MODEL_1_PATH_PROC="model=${MODEL_1_PATH} model-proc=${MODEL_1_PROC}"
-MODEL_2_PATH_PROC="model=${MODEL_2_PATH} model-proc=${MODEL_2_PROC}"
+# Build model parameters - add model-proc only if it's set
+if [ -z "$MODEL_1_PROC" ]; then
+  MODEL_1_PATH_PROC="model=${MODEL_1_PATH}"
+else
+  MODEL_1_PATH_PROC="model=${MODEL_1_PATH} model-proc=${MODEL_1_PROC}"
+fi
+
+if [ -z "$MODEL_2_PROC" ]; then
+  MODEL_2_PATH_PROC="model=${MODEL_2_PATH}"
+else
+  MODEL_2_PATH_PROC="model=${MODEL_2_PATH} model-proc=${MODEL_2_PROC}"
+fi
 
 cd - 1>/dev/null