EyeTrackVR/EyeTrackApp/haar_surround_feature.py
2023-01-23 22:16:52 -06:00

856 lines
33 KiB
Python

import functools
import math
import sys
import timeit
from functools import lru_cache
import cv2
import numpy as np
# from line_profiler_pycharm import profile
video_path = "ezgif.com-gif-maker.avi"
imshow_enable = True
calc_print_enable = True
save_video = False
skip_autoradius = False
skip_blink_detect = False
# cache param
lru_maxsize_vvs = 16
lru_maxsize_vs = 64
# CV param
default_radius = 20
auto_radius_range = (default_radius - 10, default_radius + 10) # (10,30)
auto_radius_step = 1
blink_init_frames = 60 * 3 # 60fps*3sec,Number of blink statistical frames
# step==(x,y)
default_step = (5, 5) # bigger the steps,lower the processing time! ofc acc also takes an impact
"""
Attention.
If using cv2.filter2D in this code, be careful with the kernel
https://stackoverflow.com/questions/39457468/convolution-without-any-padding-opencv-python
"""
def TimeitWrapper(*args, **kwargs):
"""
This decorator @TimeitWrapper() prints the function name and execution time in seconds.
:param args:
:param kwargs:
:return:
"""
def decorator(function):
@functools.wraps(function)
def wrapper(*args, **kwargs):
start = timeit.default_timer()
results = function(*args, **kwargs)
end = timeit.default_timer()
print('{} execution time: {:.10f} s'.format(function.__name__, end - start))
return results
return wrapper
return decorator
class TimeitResult(object):
"""
from https://github.com/ipython/ipython/blob/339c0d510a1f3cb2158dd8c6e7f4ac89aa4c89d8/IPython/core/magics/execution.py#L55
Object returned by the timeit magic with info about the run.
Contains the following attributes :
loops: (int) number of loops done per measurement
repeat: (int) number of times the measurement has been repeated
best: (float) best execution time / number
all_runs: (list of float) execution time of each run (in s)
"""
def __init__(self, loops, repeat, best, worst, all_runs, precision):
self.loops = loops
self.repeat = repeat
self.best = best
self.worst = worst
self.all_runs = all_runs
self._precision = precision
self.timings = [dt / self.loops for dt in all_runs]
@property
def average(self):
return math.fsum(self.timings) / len(self.timings)
@property
def stdev(self):
mean = self.average
return (math.fsum([(x - mean) ** 2 for x in self.timings]) / len(self.timings)) ** 0.5
def __str__(self):
pm = '+-'
if hasattr(sys.stdout, 'encoding') and sys.stdout.encoding:
try:
u'\xb1'.encode(sys.stdout.encoding)
pm = u'\xb1'
except:
pass
return "min:{best} max:{worst} mean:{mean} {pm} {std} per loop (mean {pm} std. dev. of {runs} run{run_plural}, {loops:,} loop{loop_plural} each)".format(
pm=pm,
runs=self.repeat,
loops=self.loops,
loop_plural="" if self.loops == 1 else "s",
run_plural="" if self.repeat == 1 else "s",
mean=format_time(self.average, self._precision),
std=format_time(self.stdev, self._precision),
best=format_time(self.best, self._precision),
worst=format_time(self.worst, self._precision),
)
def _repr_pretty_(self, p, cycle):
unic = self.__str__()
p.text(u'<TimeitResult : ' + unic + u'>')
class FPSResult(object):
"""
base https://github.com/ipython/ipython/blob/339c0d510a1f3cb2158dd8c6e7f4ac89aa4c89d8/IPython/core/magics/execution.py#L55
"""
def __init__(self, loops, repeat, best, worst, all_runs, precision):
self.loops = loops
self.repeat = repeat
self.best = 1 / best
self.worst = 1 / worst
self.all_runs = all_runs
self._precision = precision
self.fps = [1 / dt for dt in all_runs]
self.unit = "fps"
@property
def average(self):
return math.fsum(self.fps) / len(self.fps)
@property
def stdev(self):
mean = self.average
return (math.fsum([(x - mean) ** 2 for x in self.fps]) / len(self.fps)) ** 0.5
def __str__(self):
pm = '+-'
if hasattr(sys.stdout, 'encoding') and sys.stdout.encoding:
try:
u'\xb1'.encode(sys.stdout.encoding)
pm = u'\xb1'
except:
pass
return "min:{best} max:{worst} mean:{mean} {pm} {std} per loop (mean {pm} std. dev. of {runs} run{run_plural}, {loops:,} loop{loop_plural} each)".format(
pm=pm,
runs=self.repeat,
loops=self.loops,
loop_plural="" if self.loops == 1 else "s",
run_plural="" if self.repeat == 1 else "s",
mean="%.*g%s" % (self._precision, self.average, self.unit),
std="%.*g%s" % (self._precision, self.stdev, self.unit),
best="%.*g%s" % (self._precision, self.best, self.unit),
worst="%.*g%s" % (self._precision, self.worst, self.unit),
)
def _repr_pretty_(self, p, cycle):
unic = self.__str__()
p.text(u'<FPSResult : ' + unic + u'>')
def format_time(timespan, precision=3):
"""
https://github.com/ipython/ipython/blob/339c0d510a1f3cb2158dd8c6e7f4ac89aa4c89d8/IPython/core/magics/execution.py#L1473
Formats the timespan in a human readable form
"""
if timespan >= 60.0:
# we have more than a minute, format that in a human readable form
# Idea from http://snipplr.com/view/5713/
parts = [("d", 60 * 60 * 24), ("h", 60 * 60), ("min", 60), ("s", 1)]
time = []
leftover = timespan
for suffix, length in parts:
value = int(leftover / length)
if value > 0:
leftover = leftover % length
time.append(u'%s%s' % (str(value), suffix))
if leftover < 1:
break
return " ".join(time)
# Unfortunately the unicode 'micro' symbol can cause problems in
# certain terminals.
# See bug: https://bugs.launchpad.net/ipython/+bug/348466
# Try to prevent crashes by being more secure than it needs to
# E.g. eclipse is able to print a µ, but has no sys.stdout.encoding set.
units = [u"s", u"ms", u'us', "ns"] # the save value
if hasattr(sys.stdout, 'encoding') and sys.stdout.encoding:
try:
u'\xb5'.encode(sys.stdout.encoding)
units = [u"s", u"ms", u'\xb5s', "ns"]
except:
pass
scaling = [1, 1e3, 1e6, 1e9]
if timespan > 0.0:
order = min(-int(math.floor(math.log10(timespan)) // 3), 3)
else:
order = 3
return u"%.*g %s" % (precision, timespan * scaling[order], units[order])
class CvParameters:
# It may be a little slower because a dict named "self" is read for each function call.
def __init__(self, radius, step):
# self.prev_radius=radius
self._radius = radius
self.pad = 2 * radius
# self.prev_step=step
self._step = step
self._hsf = HaarSurroundFeature(radius)
def get_rpsh(self):
return self._radius, self.pad, self._step, self._hsf
# Essentially, the following would be preferable, but it would take twice as long to call.
# return self.radius, self.pad, self.step, self.hsf
@property
def radius(self):
return self._radius
@radius.setter
def radius(self, now_radius):
# self.prev_radius=self._radius
self._radius = now_radius
self.pad = 2 * now_radius
self.hsf = now_radius
@property
def step(self):
return self._step
@step.setter
def step(self, now_step):
# self.prev_step=self.step
self._step = now_step
@property
def hsf(self):
return self._hsf
@hsf.setter
def hsf(self, now_radius):
self._hsf = HaarSurroundFeature(now_radius)
class HaarSurroundFeature:
def __init__(self, r_inner, r_outer=None, val=None):
if r_outer is None:
r_outer = r_inner * 3
# print(r_outer)
r_inner2 = r_inner * r_inner
count_inner = r_inner2
count_outer = r_outer * r_outer - r_inner2
if val is None:
val_inner = 1.0 / r_inner2
val_outer = -val_inner * count_inner / count_outer
else:
val_inner = val[0]
val_outer = val[1]
self.val_in = np.array(val_inner, dtype=np.float64)
self.val_out = np.array(val_outer, dtype=np.float64)
self.r_in = r_inner
self.r_out = r_outer
def get_kernel(self):
# Defined here, but not yet used?
# Create a kernel filled with the value of self.val_out
kernel = np.ones(shape=(2 * self.r_out - 1, 2 * self.r_out - 1), dtype=np.float64) * self.val_out
# Set the values of the inner area of the kernel using array slicing
start = (self.r_out - self.r_in)
end = (self.r_out + self.r_in - 1)
kernel[start:end, start:end] = self.val_in
return kernel
def to_gray(frame):
# Faster by quitting checking if the input image is already grayscale
# Perhaps it would be faster with less overhead to call cv2.cvtColor directly instead of using this function
return cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
@lru_cache(maxsize=lru_maxsize_vs)
def frameint_get_xy_step(imageshape, xysteps, pad, start_offset=None, end_offset=None):
"""
:param imageshape: (height(row),width(col)). row==y,cal==x
:param xysteps: (x,y)
:param pad: int
:param start_offset: (x,y) or None
:param end_offset: (x,y) or None
:return: xy_np:tuple(x,y)
"""
row, col = imageshape
row -= 1
col -= 1
x_step, y_step = xysteps
# This is not beautiful.
start_pad_x = start_pad_y = end_pad_x = end_pad_y = pad
if start_offset is not None:
start_pad_x += start_offset[0]
start_pad_y += start_offset[1]
if end_offset is not None:
end_pad_x += end_offset[0]
end_pad_y += end_offset[1]
y_np = np.arange(start_pad_y, row - end_pad_y, y_step)
x_np = np.arange(start_pad_x, col - end_pad_x, x_step)
xy_np = (x_np, y_np)
return xy_np
@lru_cache(maxsize=lru_maxsize_vvs)
def get_hsf_empty_array(len_syx, frameint_x, frame_int_dtype, fcshape):
# Function to reduce array allocation by providing an empty array first and recycling it with lru
inner_sum = np.empty(len_syx, dtype=frame_int_dtype)
outer_sum = np.empty(len_syx, dtype=frame_int_dtype)
p_temp = np.empty((len_syx[0], frameint_x), dtype=frame_int_dtype)
p00 = np.empty(len_syx, dtype=frame_int_dtype)
p11 = np.empty(len_syx, dtype=frame_int_dtype)
p01 = np.empty(len_syx, dtype=frame_int_dtype)
p10 = np.empty(len_syx, dtype=frame_int_dtype)
response_list = np.empty(len_syx, dtype=np.float64)
frame_conv = np.zeros(shape=fcshape[0], dtype=np.uint8)
frame_conv_stride = frame_conv[::fcshape[1], ::fcshape[2]]
return (inner_sum, outer_sum), p_temp, (p00, p11, p01, p10), response_list, (frame_conv, frame_conv_stride)
# @profile
def conv_int(frame_int, kernel, xy_step, padding, xy_steps_list):
"""
:param frame_int:
:param kernel: hsf
:param step: (x,y)
:param padding: int
:return:
"""
row, col = frame_int.shape
row -= 1
col -= 1
x_step, y_step = xy_step
# padding2 = 2 * padding
f_shape = row - 2 * padding, col - 2 * padding
r_in = kernel.r_in
len_sx, len_sy = len(xy_steps_list[0]), len(xy_steps_list[1])
inout_sum, p_temp, p_list, response_list, frameconvlist = get_hsf_empty_array((len_sy, len_sx), col + 1,
frame_int.dtype, (f_shape, y_step, x_step))
inner_sum, outer_sum = inout_sum
p00, p11, p01, p10 = p_list
frame_conv, frame_conv_stride = frameconvlist
y_rin_m = xy_steps_list[1] - r_in
x_rin_m = xy_steps_list[0] - r_in
y_rin_p = xy_steps_list[1] + r_in
x_rin_p = xy_steps_list[0] + r_in
# xx==(y,x),m==MINUS,p==PLUS, ex: mm==(y-,x-)
inarr_mm = frame_int[y_rin_m[0]:y_rin_m[-1] + 1:y_step, x_rin_m[0]:x_rin_m[-1] + 1:x_step]
inarr_mp = frame_int[y_rin_m[0]:y_rin_m[-1] + 1:y_step, x_rin_p[0]:x_rin_p[-1] + 1:x_step]
inarr_pm = frame_int[y_rin_p[0]:y_rin_p[-1] + 1:y_step, x_rin_m[0]:x_rin_m[-1] + 1:x_step]
inarr_pp = frame_int[y_rin_p[0]:y_rin_p[-1] + 1:y_step, x_rin_p[0]:x_rin_p[-1] + 1:x_step]
# == inarr_mm + inarr_pp - inarr_mp - inarr_pm
inner_sum[:, :] = inarr_mm
inner_sum += inarr_pp
inner_sum -= inarr_mp
inner_sum -= inarr_pm
# Bottleneck here, I want to make it smarter. Someone do it.
# (y,x)
# p00=max(y_ro_m,0),max(x_ro_m,0)
# p11=min(y_ro_p,ylim),min(x_ro_p,xlim)
# p01=max(y_ro_m,0),min(x_ro_p,xlim)
# p10=min(y_ro_p,ylim),max(x_ro_m,0)
y_ro_m = xy_steps_list[1] - kernel.r_out
x_ro_m = xy_steps_list[0] - kernel.r_out
y_ro_p = xy_steps_list[1] + kernel.r_out
x_ro_p = xy_steps_list[0] + kernel.r_out
# p00 calc
np.take(frame_int, y_ro_m, axis=0, mode="clip", out=p_temp)
np.take(p_temp, x_ro_m, axis=1, mode="clip", out=p00)
# p01 calc
np.take(p_temp, x_ro_p, axis=1, mode="clip", out=p01)
# p11 calc
np.take(frame_int, y_ro_p, axis=0, mode="clip", out=p_temp)
np.take(p_temp, x_ro_p, axis=1, mode="clip", out=p11)
# p10 calc
np.take(p_temp, x_ro_m, axis=1, mode="clip", out=p10)
# the point is this
# p00=np.take(np.take(frame_int, y_ro_m, axis=0, mode="clip"), x_ro_m, axis=1, mode="clip")
# p11=np.take(np.take(frame_int, y_ro_p, axis=0, mode="clip"), x_ro_p, axis=1, mode="clip")
# p01=np.take(np.take(frame_int, y_ro_m, axis=0, mode="clip"), x_ro_p, axis=1, mode="clip")
# p10=np.take(np.take(frame_int, y_ro_p, axis=0, mode="clip"), x_ro_m, axis=1, mode="clip")
outer_sum[:, :] = p00 + p11 - p01 - p10 - inner_sum
np.multiply(kernel.val_in, inner_sum, dtype=np.float64, out=response_list)
response_list += kernel.val_out * outer_sum
# min_response, max_val, min_loc, max_loc = cv2.minMaxLoc(response_list)
min_response, _, min_loc, _ = cv2.minMaxLoc(response_list)
center = ((xy_steps_list[0][min_loc[0]] - padding), (xy_steps_list[1][min_loc[1]] - padding))
frame_conv_stride[:, :] = response_list
# or
# frame_conv_stride[:, :] = response_list.astype(np.uint8)
return frame_conv, min_response, center
class Auto_Radius_Calc(object):
def __init__(self):
self.response_list = []
self.radius_cand_list = []
self.adj_comp_flag = False
self.radius_middle_index = None
self.left_item = None
self.right_item = None
self.left_index = None
self.right_index = None
def get_radius(self):
prev_res_len = len(self.response_list)
# adjustment of radius
if prev_res_len == 1:
# len==1==response_list==[default_radius]
self.adj_comp_flag = False
return auto_radius_range[0]
elif prev_res_len == 2:
# len==2==response_list==[default_radius, auto_radius_range[0]]
self.adj_comp_flag = False
return auto_radius_range[1]
elif prev_res_len == 3:
# len==3==response_list==[default_radius,auto_radius_range[0],auto_radius_range[1]]
if self.response_list[1][1] < self.response_list[2][1]:
self.left_item = self.response_list[1]
self.right_item = self.response_list[0]
else:
self.left_item = self.response_list[0]
self.right_item = self.response_list[2]
self.radius_cand_list = [i for i in range(self.left_item[0], self.right_item[0] + auto_radius_step, auto_radius_step)]
self.left_index = 0
self.right_index = len(self.radius_cand_list) - 1
self.radius_middle_index = (self.left_index + self.right_index) // 2
self.adj_comp_flag = False
return self.radius_cand_list[self.radius_middle_index]
else:
if self.left_index <= self.right_index and self.left_index != self.radius_middle_index:
if (self.left_item[1] + self.response_list[-1][1]) < (self.right_item[1] + self.response_list[-1][1]):
self.right_item = self.response_list[-1]
self.right_index = self.radius_middle_index - 1
self.radius_middle_index = (self.left_index + self.right_index) // 2
self.adj_comp_flag = False
return self.radius_cand_list[self.radius_middle_index]
if (self.left_item[1] + self.response_list[-1][1]) > (self.right_item[1] + self.response_list[-1][1]):
self.left_item = self.response_list[-1]
self.left_index = self.radius_middle_index + 1
self.radius_middle_index = (self.left_index + self.right_index) // 2
self.adj_comp_flag = False
return self.radius_cand_list[self.radius_middle_index]
self.adj_comp_flag = True
return self.radius_cand_list[self.radius_middle_index]
def get_radius_base(self):
"""
Use it when the new version doesn't work well.
:return:
"""
prev_res_len = len(self.response_list)
# adjustment of radius
if prev_res_len == 1:
# len==1==response_list==[default_radius]
self.adj_comp_flag = False
return auto_radius_range[0]
elif prev_res_len == 2:
# len==2==response_list==[default_radius, auto_radius_range[0]]
self.adj_comp_flag = False
return auto_radius_range[1]
elif prev_res_len == 3:
# len==3==response_list==[default_radius,auto_radius_range[0],auto_radius_range[1]]
sort_res = sorted(self.response_list, key=lambda x: x[1])[0]
# Extract the radius with the lowest response value
if sort_res[0] == default_radius:
# If the default value is best, change now_mode to init after setting radius to the default value.
self.adj_comp_flag = True
return default_radius
elif sort_res[0] == auto_radius_range[0]:
self.radius_cand_list = [i for i in range(auto_radius_range[0], default_radius, auto_radius_step)][1:]
self.adj_comp_flag = False
return self.radius_cand_list.pop()
else:
self.radius_cand_list = [i for i in range(default_radius, auto_radius_range[1], auto_radius_step)][1:]
self.adj_comp_flag = False
return self.radius_cand_list.pop()
else:
# Try the contents of the radius_cand_list in order until the radius_cand_list runs out
# Better make it a binary search.
if len(self.radius_cand_list) == 0:
sort_res = sorted(self.response_list, key=lambda x: x[1])[0]
self.adj_comp_flag = True
return sort_res[0]
else:
self.adj_comp_flag = False
return self.radius_cand_list.pop()
def add_response(self, radius, response):
self.response_list.append((radius, response))
return None
class Blink_Detector(object):
def __init__(self):
self.response_list = []
self.response_max = None
self.enable_detect_flg = False
self.quartile_1 = None
def calc_thresh(self):
# Calculate response_max by computing interquartile range, IQR
# self.response_listo = np.array(self.response_listo)
# 25%,75%
# This value may need to be adjusted depending on the environment.
# quartile_1, quartile_3 = np.percentile(self.response_listo, [25, 75])
# iqr = quartile_3 - quartile_1
# self.response_maxo = quartile_3 + (iqr * 1.5)
# quartile_1, quartile_3 = np.percentile(self.response_list, [25, 75])
# or
quartile_1, quartile_3 = np.percentile(np.array(self.response_list), [25, 75])
self.quartile_1 = quartile_1
iqr = quartile_3 - quartile_1
# response_min = quartile_1 - (iqr * 1.5)
self.response_max = float(quartile_3 + (iqr * 1.5))
# or
# self.response_max = quartile_3 + (iqr * 1.5)
self.enable_detect_flg = True
return None
def detect(self, now_response):
return now_response > self.response_max
def add_response(self, response):
self.response_list.append(response)
return None
def response_len(self):
return len(self.response_list)
class CenterCorrection(object):
def __init__(self):
# Tunable parameters
kernel_size = 7 # 3 or 5 or 7
self.hist_thr = float(4) # 4%
self.center_q1_radius = 20
self.setup_comp = False
self.quartile_1 = None
self.radius = None
self.frame_shape = None
self.frame_mask = None
self.frame_bin = None
self.frame_final = None
self.morph_kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (kernel_size, kernel_size))
self.morph_kernel2 = np.ones((3, 3))
self.hist_index = np.arange(256)
self.hist = np.empty((256, 1))
self.hist_norm = np.empty((256, 1))
def init_array(self, gray_shape, quartile_1, radius):
self.frame_shape = gray_shape
self.frame_mask = np.empty(gray_shape, dtype=np.uint8)
self.frame_bin = np.empty(gray_shape, dtype=np.uint8)
self.frame_final = np.empty(gray_shape, dtype=np.uint8)
self.quartile_1 = quartile_1
self.radius = radius
self.setup_comp = True
# def reset_array(self):
# self.frame_mask.fill(0)
def correction(self, gray_frame, orig_x, orig_y):
center_x, center_y = orig_x, orig_y
self.frame_mask.fill(0)
# cv2.circle(self.frame_mask, center=(center_x, center_y), radius=int(self.radius * 2), color=255, thickness=-1)
# bottleneck
cv2.calcHist([gray_frame], [0], None, [256], [0, 256], hist=self.hist)
cv2.normalize(self.hist, self.hist_norm, alpha=100.0, norm_type=cv2.NORM_L1)
hist_per = self.hist_norm.cumsum()
hist_index_list = self.hist_index[hist_per >= self.hist_thr]
frame_thr = hist_index_list[0] if len(hist_index_list) else np.percentile(cv2.bitwise_or(255 - self.frame_mask, gray_frame), 4)
# bottleneck
self.frame_bin = cv2.threshold(gray_frame, frame_thr, 1, cv2.THRESH_BINARY_INV)[1]
cropped_x, cropped_y, cropped_w, cropped_h = cv2.boundingRect(self.frame_bin)
self.frame_final = cv2.bitwise_and(self.frame_bin, self.frame_mask)
# bottleneck
self.frame_final = cv2.morphologyEx(self.frame_final, cv2.MORPH_CLOSE, self.morph_kernel)
self.frame_final = cv2.morphologyEx(self.frame_final, cv2.MORPH_OPEN, self.morph_kernel)
if (cropped_h, cropped_w) == self.frame_shape:
# Not detected.
base_x, base_y = center_x, center_y
else:
base_x = cropped_x + cropped_w // 2
base_y = cropped_y + cropped_h // 2
if self.frame_final[base_y, base_x] != 1:
if self.frame_final[center_y, center_x] != 1:
self.frame_final = cv2.morphologyEx(self.frame_final, cv2.MORPH_DILATE, self.morph_kernel2, iterations=3)
else:
base_x, base_y = center_x, center_y
contours, _ = cv2.findContours(self.frame_final, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
contours_box = [cv2.boundingRect(cnt) for cnt in contours]
contours_dist = np.array(
[abs(base_x - (cnt_x + cnt_w / 2)) + abs(base_y - (cnt_y + cnt_h / 2)) for cnt_x, cnt_y, cnt_w, cnt_h in contours_box])
if len(contours_box):
cropped_x2, cropped_y2, cropped_w2, cropped_h2 = contours_box[contours_dist.argmin()]
x = cropped_x2 + cropped_w2 // 2
y = cropped_y2 + cropped_h2 // 2
else:
x = center_x
y = center_y
# if imshow_enable:
# cv2.circle(frame, (orig_x, orig_y), 10, (255, 0, 0), -1)
# cv2.circle(frame, (x, y), 7, (0, 0, 255), -1)
#
# out_x = center_x if abs(x - center_x) > radius else x
# out_y = center_y if abs(y - center_y) > radius else y
out_x, out_y = orig_x, orig_y
if gray_frame[int(max(y - 5, 0)):int(min(y + 5, self.frame_shape[0])),
int(max(x - 5, 0)):int(min(x + 5, self.frame_shape[1]))].min() < self.quartile_1:
out_x = x
out_y = y
# if imshow_enable:
# cv2.circle(frame, (out_x, out_y), 5, (0, 255, 0), -1)
#
# cv2.imshow("frame_bin", self.frame_bin * 255)
# cv2.imshow("frame_final", self.frame_final * 255)
return out_x, out_y
class HSRAC_cls(object):
def __init__(self):
# I'd like to take into account things like print, end_time - start_time processing time, etc., but it's too much trouble.
# For measuring total processing time
self.main_start_time = timeit.default_timer()
self.rng = np.random.default_rng()
self.cvparam = CvParameters(default_radius, default_step)
self.cv_modeo = ["first_frame", "radius_adjust", "blink_adjust", "normal"]
self.now_modeo = self.cv_modeo[0]
self.auto_radius_calc = Auto_Radius_Calc()
self.blink_detector = Blink_Detector()
self.center_q1 = Blink_Detector()
self.center_correct = CenterCorrection()
self.cap = None
self.timedict = {"to_gray": [], "int_img": [], "conv_int": [], "crop": [], "total_cv": []}
def open_video(self, video_path):
# Temporary implementation to run
cap = cv2.VideoCapture(video_path)
if not cap.isOpened():
raise IOError("Error opening video stream or file")
self.cap = cap
return True
def read_frame(self):
# Temporary implementation to run
if not self.cap.isOpened():
return False
ret, frame = self.cap.read()
if ret:
# I have set it to grayscale (1ch) just in case, but if the frame is 1ch, this line can be commented out.
self.current_image_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
return True
return False
def single_run(self):
# Temporary implementation to run
## default_radius = 14
frame = self.current_image_gray
if self.now_modeo == self.cv_modeo[1]:
# adjustment of radius
# debug print
# if calc_print_enable:
# temp_radius = self.auto_radius_calc.get_radius()
# print('Now radius:', temp_radius)
# self.cvparam.radius = temp_radius
self.cvparam.radius = self.auto_radius_calc.get_radius()
if self.auto_radius_calc.adj_comp_flag:
self.now_modeo = self.cv_modeo[2] if not skip_blink_detect else self.cv_modeo[3]
radius, pad, step, hsf = self.cvparam.get_rpsh()
# For measuring processing time of image processing
cv_start_time = timeit.default_timer()
gray_frame = frame
self.timedict["to_gray"].append(timeit.default_timer() - cv_start_time)
# Calculate the integral image of the frame
int_start_time = timeit.default_timer()
# BORDER_CONSTANT is faster than BORDER_REPLICATE There seems to be almost no negative impact when BORDER_CONSTANT is used.
frame_pad = cv2.copyMakeBorder(gray_frame, pad, pad, pad, pad, cv2.BORDER_CONSTANT)
frame_int = cv2.integral(frame_pad)
self.timedict["int_img"].append(timeit.default_timer() - int_start_time)
# Convolve the feature with the integral image
conv_int_start_time = timeit.default_timer()
xy_step = frameint_get_xy_step(frame_int.shape, step, pad, start_offset=None, end_offset=None)
frame_conv, response, center_xy = conv_int(frame_int, hsf, step, pad, xy_step)
self.timedict["conv_int"].append(timeit.default_timer() - conv_int_start_time)
crop_start_time = timeit.default_timer()
# Define the center point and radius
center_x, center_y = center_xy
upper_x = center_x + radius
lower_x = center_x - radius
upper_y = center_y + radius
lower_y = center_y - radius
# Crop the image using the calculated bounds
cropped_image = gray_frame[lower_y:upper_y, lower_x:upper_x]
if self.now_modeo == self.cv_modeo[0] or self.now_modeo == self.cv_modeo[1]:
# If mode is first_frame or radius_adjust, record current radius and response
self.auto_radius_calc.add_response(radius, response)
elif self.now_modeo == self.cv_modeo[2]:
# Statistics for blink detection
if self.blink_detector.response_len() < blink_init_frames:
self.blink_detector.add_response(cv2.mean(cropped_image)[0])
upper_x = center_x + self.center_correct.center_q1_radius
lower_x = center_x - self.center_correct.center_q1_radius
upper_y = center_y + self.center_correct.center_q1_radius
lower_y = center_y - self.center_correct.center_q1_radius
self.center_q1.add_response(cv2.mean(gray_frame[lower_y:upper_y, lower_x:upper_x])[0])
else:
self.blink_detector.calc_thresh()
self.center_q1.calc_thresh()
self.now_modeo = self.cv_modeo[3]
else:
if 0 in cropped_image.shape:
# If shape contains 0, it is not detected well.
print("Something's wrong.")
else:
orig_x, orig_y = center_x, center_y
if self.blink_detector.enable_detect_flg:
# If the average value of cropped_image is greater than response_max
# (i.e., if the cropimage is whitish
if self.blink_detector.detect(cv2.mean(cropped_image)[0]):
# blink
pass
else:
# pass
if not self.center_correct.setup_comp:
self.center_correct.init_array(gray_frame.shape, self.center_q1.quartile_1, radius)
center_x, center_y = self.center_correct.correction(gray_frame, center_x, center_y)
# Define the center point and radius
center_xy = (center_x, center_y)
upper_x = center_x + radius
lower_x = center_x - radius
upper_y = center_y + radius
lower_y = center_y - radius
# Crop the image using the calculated bounds
cropped_image = gray_frame[lower_y:upper_y, lower_x:upper_x]
# if imshow_enable or save_video:
# cv2.circle(frame, (orig_x, orig_y), 6, (0, 0, 255), -1)
# cv2.circle(frame, (center_x, center_y), 3, (255, 0, 0), -1)
# If you want to update response_max. it may be more cost-effective to rewrite response_list in the following way
# https://stackoverflow.com/questions/42771110/fastest-way-to-left-cycle-a-numpy-array-like-pop-push-for-a-queue
cv_end_time = timeit.default_timer()
self.timedict["crop"].append(cv_end_time - crop_start_time)
self.timedict["total_cv"].append(cv_end_time - cv_start_time)
# if calc_print_enable:
# the lower the response the better the likelyhood of there being a pupil. you can adujst the radius and steps accordingly
# print('Kernel response:', response)
# print('Pixel position:', center_xy)
if imshow_enable:
if self.now_modeo != self.cv_modeo[0] and self.now_modeo != self.cv_modeo[1]:
if 0 in cropped_image.shape:
# If shape contains 0, it is not detected well.
pass
else:
cv2.imshow("crop", cropped_image)
cv2.imshow("frame", frame)
if cv2.waitKey(1) & 0xFF == ord("q"):
pass
if self.now_modeo == self.cv_modeo[0]:
# Moving from first_frame to the next mode
if skip_autoradius and skip_blink_detect:
self.now_modeo = self.cv_modeo[3]
elif skip_autoradius:
self.now_modeo = self.cv_modeo[2]
else:
self.now_modeo = self.cv_modeo[1]
return center_x, center_y, frame
class External_Run_HSF:
hsrac = HSRAC_cls()
def HSFS(self):
External_Run_HSF.hsrac.current_image_gray = self.current_image_gray
center_x, center_y, frame = External_Run_HSF.hsrac.single_run()
return center_x, center_y, frame
if __name__ == '__main__':
hsrac = HSRAC_cls()
hsrac.open_video(video_path)
while hsrac.read_frame():
_ = hsrac.single_run()