openmv/usr/examples/08-Feature-Detection/face_detection.py
Kwabena W. Agyeman 94bc225542 Moved examples arround.
Tried to emulate Arduino's 11 folders... I'd perfer to have all the
shield scripts in one folder... but, that might not make sense. I don't
really want one script per folder however. So, I might merge some more
stuff in the future. I have a grand idea here that will become evident as
I work though the examples.

Anyway, the current structure is not final. It will be in flux for a
little while.

As for Git History, folder history is the best we're going to get. Git
and GitHub don't seem to deal with moves too well.
2016-03-30 21:30:11 -04:00

38 lines
947 B
Python

import sensor, time, image
# Reset sensor
sensor.reset()
# Sensor settings
sensor.set_contrast(1)
sensor.set_gainceiling(16)
sensor.set_framesize(sensor.HQVGA)
sensor.set_pixformat(sensor.GRAYSCALE)
# Load Haar Cascade
# By default this will use all stages, lower satges is faster but less accurate.
face_cascade = image.HaarCascade("frontalface", stages=25)
print(face_cascade)
# FPS clock
clock = time.clock()
while (True):
clock.tick()
# Capture snapshot
img = sensor.snapshot()
# Find objects.
# Note: Lower scale factor scales-down the image more and detects smaller objects.
# Higher threshold results in a higher detection rate, with more false positives.
objects = img.find_features(face_cascade, threshold=0.5, scale=1.5)
# Draw objects
for r in objects:
img.draw_rectangle(r)
# Print FPS.
# Note: Actual FPS is higher, streaming the FB makes it slower.
print(clock.fps())