mirror of
https://github.com/EyeTrackVR/EyeTrackVR.git
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111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
import pandas as pd
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import numpy as np
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import time
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from enum import IntEnum
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#higher intensity means more closed/ more white/less pupil
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#Hm I need an acronym for this, any ideas?
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#IBO Intensity Based Openess
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class EyeId(IntEnum):
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RIGHT = 0
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LEFT = 1
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BOTH = 2
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SETTINGS = 3
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# HOW THIS WORKS:
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# we get the intensity of pupil area from HSF crop, When the eyelid starts to close, the pupil starts being obstructed by skin which is generally lighter than the pupil.
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# This causes the intensity to increase. We save all of the darkest intensities of each pupil position to calculate for pupil movement.
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# ex. when you look up there is less pupil visible, which results in an uncalculated change in intensity even though the eyelid has not moved in a meaningful way.
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# We compare the darkest intensity of that area, to the lightest (global) intensity to find the appropriate openness state via a float.
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if EyeId.RIGHT:
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fname = "IBO_RIGHT.csv"
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if EyeId.LEFT:
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fname = "IBO_LEFT.csv"
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lct = time.time()
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try:
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data = pd.read_csv(fname, sep=",")
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except:
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cf = open(fname, "w")
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cf.write("xy,intensity")
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cf.close()
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data = pd.read_csv(fname, sep=",")
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#TODO we need more pixel points for smooth operation, lets get this setup in hsrac
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def intense(x, y, frame):
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global lct
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upper_x = int(x) + 25 #TODO make this a setting
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lower_x = int(x) - 25
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upper_y = int(y) + 25
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lower_y = int(y) - 25
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frame = frame[lower_y:upper_y, lower_x:upper_x]
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print(x, y, int(x), int(y), upper_x, upper_y, lower_x, lower_y)
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try:
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xy = int(str(int(x)) + str(int(y)) + str(int(x)+int(y)))
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intensity = np.sum(frame) #why is this outputting 0s?
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# print(intensity, upper_x, upper_y, lower_x, lower_y)
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except:
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return 0.0 #TODO find how on earth a hyphen gets thrown into this
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changed = False
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try: #max pupil per cord
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dfb = data[data['xy']==xy].index.values.astype(int)[0] # find pandas index of line with matching xy value
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if intensity < data.at[dfb, 'intensity']: #if current intensity value is less (more pupil), save that
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data.at[dfb, 'intensity'] = intensity # set value
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changed = True
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print("var adjusted")
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else:
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intensitya = data.at[dfb, 'intensity'] - 3 #if current intensity value is less (more pupil), save that
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data.at[dfb, 'intensity'] = intensitya # set value
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changed = True
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except: # that value is not yet saved
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data.loc[len(data.index)] = [xy, intensity] #create new data on last line of csv with current intesity
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changed = True
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try: # min pupil global
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if intensity > data.at[0, 'intensity']: #if current intensity value is more (less pupil), save that NOTE: we have the
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data.at[0, 'intensity'] = intensity # set value at 0 index
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changed = True
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print("new max", intensity)
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else:
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intensityd = data.at[0, 'intensity'] - 10 #continuously adjust closed intensity, will be set when user blink, used to allow eyes to close when lighting changes
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data.at[0, 'intensity'] = intensityd # set value at 0 index
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changed = True
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except: # there is no max intensity yet, create
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data.at[0, 'intensity'] = intensity # set value at 0 index
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changed = True
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print("create max", intensity)
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try:
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maxp = data.at[dfb, 'intensity']
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minp = data.at[0, 'intensity']
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#eyeopen = (intensity - minp) / (maxp - minp)
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eyeopen = (intensity - maxp) / (minp - maxp)
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eyeopen = 1 - eyeopen
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eyeopen = eyeopen - 0.2
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# print(intensity, maxp, minp, x, y)
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# print(f"EYEOPEN: {eyeopen}")
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# print(int(x), int(y), eyeopen, maxp, minp)
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except:
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print('[INFO] Something went wrong, assuming blink.')
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eyeopen = 0.0
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if changed == True and ((time.time() - lct) > 4): #save every 4 seconds if something changed to save disk usage
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data.to_csv(fname, encoding='utf-8', index=False) #save file since we made a change
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lct = time.time()
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print("SAVED")
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return eyeopen
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