Commit 3e6c2420 authored by captin411's avatar captin411

improve debug markers, fix algo weighting

parent 1be5933b
import cv2
import os
from collections import defaultdict
from math import log, sqrt
import numpy as np
......@@ -26,19 +27,9 @@ def crop_image(im, settings):
scale_by = settings.crop_height / im.height
im = im.resize((int(im.width * scale_by), int(im.height * scale_by)))
im_debug = im.copy()
if im.width == settings.crop_width and im.height == settings.crop_height:
if settings.annotate_image:
d = ImageDraw.Draw(im)
rect = [0, 0, im.width, im.height]
rect[2] -= 1
rect[3] -= 1
d.rectangle(rect, outline=GREEN)
if settings.destop_view_image:
im.show()
return im
focus = focal_point(im, settings)
focus = focal_point(im_debug, settings)
# take the focal point and turn it into crop coordinates that try to center over the focal
# point but then get adjusted back into the frame
......@@ -62,89 +53,143 @@ def crop_image(im, settings):
crop = [x1, y1, x2, y2]
results = []
results.append(im.crop(tuple(crop)))
if settings.annotate_image:
d = ImageDraw.Draw(im)
d = ImageDraw.Draw(im_debug)
rect = list(crop)
rect[2] -= 1
rect[3] -= 1
d.rectangle(rect, outline=GREEN)
results.append(im_debug)
if settings.destop_view_image:
im.show()
im_debug.show()
return im.crop(tuple(crop))
return results
def focal_point(im, settings):
corner_points = image_corner_points(im, settings)
entropy_points = image_entropy_points(im, settings)
face_points = image_face_points(im, settings)
total_points = len(corner_points) + len(entropy_points) + len(face_points)
corner_weight = settings.corner_points_weight
entropy_weight = settings.entropy_points_weight
face_weight = settings.face_points_weight
weight_pref_total = corner_weight + entropy_weight + face_weight
# weight things
pois = []
if weight_pref_total == 0 or total_points == 0:
return pois
pois.extend(
[ PointOfInterest( p.x, p.y, weight=p.weight * ( (corner_weight/weight_pref_total) / (len(corner_points)/total_points) )) for p in corner_points ]
)
pois.extend(
[ PointOfInterest( p.x, p.y, weight=p.weight * ( (entropy_weight/weight_pref_total) / (len(entropy_points)/total_points) )) for p in entropy_points ]
)
pois.extend(
[ PointOfInterest( p.x, p.y, weight=p.weight * ( (face_weight/weight_pref_total) / (len(face_points)/total_points) )) for p in face_points ]
)
weight_pref_total = 0
if len(corner_points) > 0:
weight_pref_total += settings.corner_points_weight
if len(entropy_points) > 0:
weight_pref_total += settings.entropy_points_weight
if len(face_points) > 0:
weight_pref_total += settings.face_points_weight
corner_centroid = None
if len(corner_points) > 0:
corner_centroid = centroid(corner_points)
corner_centroid.weight = settings.corner_points_weight / weight_pref_total
pois.append(corner_centroid)
entropy_centroid = None
if len(entropy_points) > 0:
entropy_centroid = centroid(entropy_points)
entropy_centroid.weight = settings.entropy_points_weight / weight_pref_total
pois.append(entropy_centroid)
face_centroid = None
if len(face_points) > 0:
face_centroid = centroid(face_points)
face_centroid.weight = settings.face_points_weight / weight_pref_total
pois.append(face_centroid)
average_point = poi_average(pois, settings)
if settings.annotate_image:
d = ImageDraw.Draw(im)
for f in face_points:
d.rectangle(f.bounding(f.size), outline=RED)
for f in entropy_points:
d.rectangle(f.bounding(30), outline=BLUE)
for poi in pois:
w = max(4, 4 * 0.5 * sqrt(poi.weight))
d.ellipse(poi.bounding(w), fill=BLUE)
d.ellipse(average_point.bounding(25), outline=GREEN)
max_size = min(im.width, im.height) * 0.07
if corner_centroid is not None:
color = BLUE
box = corner_centroid.bounding(max_size * corner_centroid.weight)
d.text((box[0], box[1]-15), "Edge: %.02f" % corner_centroid.weight, fill=color)
d.ellipse(box, outline=color)
if len(corner_points) > 1:
for f in corner_points:
d.rectangle(f.bounding(4), outline=color)
if entropy_centroid is not None:
color = "#ff0"
box = entropy_centroid.bounding(max_size * entropy_centroid.weight)
d.text((box[0], box[1]-15), "Entropy: %.02f" % entropy_centroid.weight, fill=color)
d.ellipse(box, outline=color)
if len(entropy_points) > 1:
for f in entropy_points:
d.rectangle(f.bounding(4), outline=color)
if face_centroid is not None:
color = RED
box = face_centroid.bounding(max_size * face_centroid.weight)
d.text((box[0], box[1]-15), "Face: %.02f" % face_centroid.weight, fill=color)
d.ellipse(box, outline=color)
if len(face_points) > 1:
for f in face_points:
d.rectangle(f.bounding(4), outline=color)
d.ellipse(average_point.bounding(max_size), outline=GREEN)
return average_point
def image_face_points(im, settings):
np_im = np.array(im)
gray = cv2.cvtColor(np_im, cv2.COLOR_BGR2GRAY)
tries = [
[ f'{cv2.data.haarcascades}haarcascade_eye.xml', 0.01 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_default.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_profileface.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt2.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt_tree.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_eye_tree_eyeglasses.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_upperbody.xml', 0.05 ]
]
for t in tries:
# print(t[0])
classifier = cv2.CascadeClassifier(t[0])
minsize = int(min(im.width, im.height) * t[1]) # at least N percent of the smallest side
try:
faces = classifier.detectMultiScale(gray, scaleFactor=1.1,
minNeighbors=7, minSize=(minsize, minsize), flags=cv2.CASCADE_SCALE_IMAGE)
except:
continue
if len(faces) > 0:
rects = [[f[0], f[1], f[0] + f[2], f[1] + f[3]] for f in faces]
return [PointOfInterest((r[0] +r[2]) // 2, (r[1] + r[3]) // 2, size=abs(r[0]-r[2])) for r in rects]
if settings.dnn_model_path is not None:
detector = cv2.FaceDetectorYN.create(
settings.dnn_model_path,
"",
(im.width, im.height),
0.8, # score threshold
0.3, # nms threshold
5000 # keep top k before nms
)
faces = detector.detect(np.array(im))
results = []
if faces[1] is not None:
for face in faces[1]:
x = face[0]
y = face[1]
w = face[2]
h = face[3]
results.append(
PointOfInterest(
int(x + (w * 0.5)), # face focus left/right is center
int(y + (h * 0)), # face focus up/down is close to the top of the head
size = w,
weight = 1/len(faces[1])
)
)
return results
else:
np_im = np.array(im)
gray = cv2.cvtColor(np_im, cv2.COLOR_BGR2GRAY)
tries = [
[ f'{cv2.data.haarcascades}haarcascade_eye.xml', 0.01 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_default.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_profileface.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt2.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_frontalface_alt_tree.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_eye_tree_eyeglasses.xml', 0.05 ],
[ f'{cv2.data.haarcascades}haarcascade_upperbody.xml', 0.05 ]
]
for t in tries:
classifier = cv2.CascadeClassifier(t[0])
minsize = int(min(im.width, im.height) * t[1]) # at least N percent of the smallest side
try:
faces = classifier.detectMultiScale(gray, scaleFactor=1.1,
minNeighbors=7, minSize=(minsize, minsize), flags=cv2.CASCADE_SCALE_IMAGE)
except:
continue
if len(faces) > 0:
rects = [[f[0], f[1], f[0] + f[2], f[1] + f[3]] for f in faces]
return [PointOfInterest((r[0] +r[2]) // 2, (r[1] + r[3]) // 2, size=abs(r[0]-r[2]), weight=1/len(rects)) for r in rects]
return []
......@@ -161,7 +206,7 @@ def image_corner_points(im, settings):
np_im,
maxCorners=100,
qualityLevel=0.04,
minDistance=min(grayscale.width, grayscale.height)*0.07,
minDistance=min(grayscale.width, grayscale.height)*0.03,
useHarrisDetector=False,
)
......@@ -171,7 +216,7 @@ def image_corner_points(im, settings):
focal_points = []
for point in points:
x, y = point.ravel()
focal_points.append(PointOfInterest(x, y, size=4))
focal_points.append(PointOfInterest(x, y, size=4, weight=1/len(points)))
return focal_points
......@@ -205,17 +250,22 @@ def image_entropy_points(im, settings):
x_mid = int(crop_best[0] + settings.crop_width/2)
y_mid = int(crop_best[1] + settings.crop_height/2)
return [PointOfInterest(x_mid, y_mid, size=25)]
return [PointOfInterest(x_mid, y_mid, size=25, weight=1.0)]
def image_entropy(im):
# greyscale image entropy
# band = np.asarray(im.convert("L"))
band = np.asarray(im.convert("1"), dtype=np.uint8)
band = np.asarray(im.convert("L"))
# band = np.asarray(im.convert("1"), dtype=np.uint8)
hist, _ = np.histogram(band, bins=range(0, 256))
hist = hist[hist > 0]
return -np.log2(hist / hist.sum()).sum()
def centroid(pois):
x = [poi.x for poi in pois]
y = [poi.y for poi in pois]
return PointOfInterest(sum(x)/len(pois), sum(y)/len(pois))
def poi_average(pois, settings):
weight = 0.0
......@@ -260,11 +310,12 @@ class PointOfInterest:
class Settings:
def __init__(self, crop_width=512, crop_height=512, corner_points_weight=0.5, entropy_points_weight=0.5, face_points_weight=0.5, annotate_image=False):
def __init__(self, crop_width=512, crop_height=512, corner_points_weight=0.5, entropy_points_weight=0.5, face_points_weight=0.5, annotate_image=False, dnn_model_path=None):
self.crop_width = crop_width
self.crop_height = crop_height
self.corner_points_weight = corner_points_weight
self.entropy_points_weight = entropy_points_weight
self.face_points_weight = entropy_points_weight
self.face_points_weight = face_points_weight
self.annotate_image = annotate_image
self.destop_view_image = False
\ No newline at end of file
self.destop_view_image = False
self.dnn_model_path = dnn_model_path
\ No newline at end of file
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