Demos and tests

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Tests

cd bin
.\TestOpenCV5.exe
.\TestOpenCV5.exe --gui          # imshow (requires test.png)
.\TestOpenCV5.exe --model=models\face_detection_yunet_2026may.onnx

Report: bin/test_results.txt. 120+ passed after download_models.ps1.

YOLOX / YOLOv5 / YOLOv8: custom postprocess in wrapper/yolo_postprocess.cpp (path contains yolox, yolov5, or yolov8).

Demo list

GUI: /gui, --gui, or -gui — OpenCV windows (imshow).

Program	Purpose
DemoOpenCV5.exe	histograms, CLAHE, moments, floodFill
DemoObjdetect5.exe	chessboard, ArUco, QR, barcode
DemoWebcam5.exe	webcam
DemoRecordWebcam5.exe	AVI recording (MJPEG)
DemoOpticalFlow5.exe	Lucas–Kanade from camera
DemoFaceDetect5.exe	YuNet on photo
DemoWebcamFace5.exe	YuNet from camera
DemoWebcamFaceId5.exe	YuNet + SFace (enroll / identify)
DemoCalibrate5.exe	synthetic calibration
DemoMatch5.exe	ORB matching
DemoDnn5.exe	readNet + forward
DemoDnnClassify5.exe	TCVClassificationModel
DemoDnnDetect5.exe	TCVDetectionModel (YOLOX)
DemoDnnSegment5.exe	TCVSegmentationModel
DemoDnnTextEast5.exe	TCVTextDetectionEAST
DemoDnnPpocr5.exe	TCVTextDetectionDB (PPOCR)
DemoPointCloud5.exe	PLY load/save
DemoSeamlessClone5.exe	preview; --try-clone — seamlessClone
DemoTrackNano5.exe	camera + TCVTrackerNano
DemoHighguiCallbacks5.exe	mouse / trackbar
DemoVclPreview5.exe / DemoFmxPreview5.exe	VCL/FMX preview
DemoTemplateMatch5.exe	matchTemplate
DemoStereoDepth5.exe	StereoSGBM
DemoContours5.exe	contours
DemoCannyHough5.exe	Canny + Hough
DemoImencode5.exe	imencode / imdecode
DemoFarneback5.exe	Farneback flow
DemoMl5.exe / DemoTrack5.exe / DemoHomography5.exe	ml, tracking, homography

DemoDnnPpocr5

After download_models.ps1, bin\ contains text_sample.png (736×736).

.\DemoDnnPpocr5.exe --image=text_sample.png
.\DemoDnnPpocr5.exe --model=models\text_detection_ppocr.onnx --image=text_sample.png

On test.png (squirrel) polygon count is usually 0 — expected. See Cookbook → PPOCR.

DemoDnnDetect5 — YOLOX

.\DemoDnnDetect5.exe --model=models\detection_yolox.onnx --image=test.png

DemoWebcamFaceId5

.\DemoWebcamFaceId5.exe --enroll=photo.jpg --name=Alice
.\DemoWebcamFaceId5.exe --camera=0 --score=0.7

Option	Description
--model=	YuNet ONNX
--rec-model=	SFace ONNX
--enroll= / --name=	register a face
E in window	enroll current face

DemoWebcam5

.\DemoWebcam5.exe --camera=0 --width=1280 --height=720 --backend=dshow

Exit: ESC or Q.

DemoMatch5

.\DemoMatch5.exe --query=test.png --train=test.png

Components (IDE)

Test/Utit2 — camera, pipeline, MUX, VCL view. See Components · Pipeline.