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data_augmentation.py
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data_augmentation.py
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#
# Authors: Bowen Wen
# Contact: wenbowenxjtu@gmail.com
# Created in 2020
#
# Copyright (c) Rutgers University, 2020 All rights reserved.
#
# Wen, B., C. Mitash, B. Ren, and K. E. Bekris. "se (3)-TrackNet:
# Data-driven 6D Pose Tracking by Calibrating Image Residuals in
# Synthetic Domains." In IEEE/RSJ International Conference on Intelligent
# Robots and Systems (IROS). 2020.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the PRACSYS, Bowen Wen, Rutgers University,
# nor the names of its contributors may be used to
# endorse or promote products derived from this software without
# specific prior written permission.
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
import scipy.signal
import scipy.stats
import torch
import sys,os,time
dir_path = os.path.dirname(os.path.realpath(__file__))
from PIL import Image
import numpy as np
import cv2
from Utils import *
class HSVJitter(object):
def __init__(self, h_noise, s_noise, v_noise, prob=0.5):
self.prob = prob
self.h_noise = h_noise
self.s_noise = s_noise
self.v_noise = v_noise
def __call__(self, data):
rgbA, depthA, rgbB, depthB, maskA, maskB, poseA = data
mask = depthB>100
hsv = cv2.cvtColor(rgbB, cv2.COLOR_RGB2HSV).astype(np.float32)
H = hsv.shape[0]
W = hsv.shape[1]
if np.random.uniform() < self.prob:
hsv[:, :, 0] += np.random.uniform(-self.h_noise, self.h_noise)
if np.random.uniform() < self.prob:
hsv[:, :, 1] += np.random.uniform(-self.s_noise, self.s_noise)
if np.random.uniform() < self.prob:
hsv[:, :, 2] += np.random.uniform(-self.v_noise, self.v_noise)
hsv = np.clip(hsv,0,255)
rgbB[mask] = cv2.cvtColor(hsv.astype(np.uint8), cv2.COLOR_HSV2RGB)[mask]
rgbB = rgbB.astype(np.uint8)
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class ChangeBright:
def __init__(self,prob=0.5,mag=[0.5,1.5]):
self.mag = mag
def __call__(self,data):
rgbA, depthA, rgbB, depthB, maskA, maskB, poseA = data
rgbB = rgbB*random.uniform(self.mag[0],self.mag[1])
rgbB = np.clip(rgbB,0,255).astype(np.uint8)
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class GaussianNoise(object):
def __init__(self, rgb_noise, depth_noise, prob=0.5):
self.rgb_noise = rgb_noise
self.depth_noise = depth_noise
self.prob = prob
def __call__(self, data):
rgbA, depthA, rgbB, depthB,maskA, maskB, poseA = data
mask = depthB>100
if np.random.uniform() < self.prob:
std = np.random.uniform(0, self.rgb_noise)
noise = np.random.normal(0, std, size=rgbA.shape)
rgbB[mask] = rgbB[mask] + noise[mask]
if np.random.uniform() < self.prob:
std = np.random.uniform(0, self.depth_noise)
noise = np.random.normal(0, std, size=depthB.shape)
depthB[mask] = depthB[mask] + noise[mask]
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class GaussianBlur(object):
def __init__(self, max_kernel_size, min_kernel_size=3, prob=0.4):
self.prob = prob
self.max_kernel_size = max_kernel_size
self.min_kernel_size = 3
def __call__(self, data):
rgbA, depthA, rgbB, depthB, maskA, maskB,poseA = data
if np.random.uniform() < self.prob:
ksize = np.random.randint(1, self.max_kernel_size//2+1)
ksize = 2*ksize+1
rgbB = cv2.GaussianBlur(rgbB, (ksize,ksize), sigmaX=2)
if np.random.uniform() < self.prob:
ksize = np.random.randint(1, self.max_kernel_size//2+1)
ksize = 2*ksize+1
depthB = cv2.GaussianBlur(depthB, (ksize,ksize), sigmaX=2)
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class OffsetDepth(object):
def __init__(self):
pass
def __call__(self, data):
rgbA, depthA, rgbB, depthB, maskA, maskB,poseA = data
depthA = self.normalize_depth(depthA, poseA)
depthB = self.normalize_depth(depthB, poseA)
return rgbA.astype(np.float32), depthA, rgbB.astype(np.float32), depthB, maskA, maskB, poseA
def normalize_depth(self, depth, pose):
depth = depth.astype(np.float32)
invalid_mask = np.logical_or(depth<=100, depth>=2000)
if pose[2, 3]<0: #gl pose
depth += pose[2, 3] * 1000
else:
depth -= pose[2, 3] * 1000
depth[invalid_mask] = 2000
assert (depth<=2000).all()
return depth
class NormalizeChannels(object):
def __init__(self,mean,std):
self.mean = mean
self.std = std
def __call__(self, data):
rgbA, depthA, rgbB, depthB, maskA, maskB, poseA = data
rgbA, depthA = self.normalize_channels(rgbA, depthA, self.mean[:4], self.std[:4])
rgbB, depthB = self.normalize_channels(rgbB, depthB, self.mean[4:], self.std[4:])
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
def normalize_channels(self, rgb, depth, mean, std):
rgb = rgb.transpose(2,0,1)
rgb = (rgb-mean[:3, np.newaxis, np.newaxis])/std[:3, np.newaxis, np.newaxis]
depth = (depth-mean[3, np.newaxis, np.newaxis])/std[3, np.newaxis, np.newaxis]
return rgb, depth
class Transpose(object):
def __call__(self, data):
rgbA, depthA, rgbB, depthB,maskA, maskB, poseA = data
rgbA = rgbA.transpose(2,0,1)
rgbB = rgbB.transpose(2,0,1)
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class ToTensor(object):
def __init__(self):
pass
def __call__(self, data):
rgbA, depthA, rgbB, depthB, maskA, maskB, poseA = data
bufferA = np.zeros((4, rgbA.shape[1], rgbA.shape[2]), dtype=np.float32)
bufferA[0:3, :, :] = rgbA
bufferA[3, :, :] = depthA
bufferB = np.zeros((4, rgbA.shape[1], rgbA.shape[2]), dtype=np.float32)
bufferB[0:3, :, :] = rgbB
bufferB[3, :, :] = depthB
bufferA = torch.from_numpy(bufferA)
bufferB = torch.from_numpy(bufferB)
return [bufferA, bufferB], maskA, maskB
def to_tensor(self, rgb,depth):
buffer = np.zeros((4, rgb.shape[1], rgb.shape[2]), dtype=np.float32)
buffer[0:3, :, :] = rgb
buffer[3, :, :] = depth
buffer = torch.from_numpy(buffer).float()
return buffer
class DepthMissing():
def __init__(self,prob=0.5,missing_percent=0.5):
self.prob = prob
self.missing_percent = missing_percent
def __call__(self,data):
rgbA, depthA, rgbB, depthB,maskA, maskB, poseA = data
W = depthB.shape[1]
H = depthB.shape[0]
us,vs = np.where(depthB>100)
if np.random.uniform(0,1)<self.prob:
missing_percent = np.random.uniform(0,self.missing_percent)
missing_ids = np.random.choice(np.arange(0,len(us)), int(missing_percent*len(us)), replace=False)
depthB[vs[missing_ids], us[missing_ids]] = 0
return rgbA, depthA, rgbB, depthB, maskA, maskB,poseA
class BlackCover():
'''Random black cover to imitate cases of object outside of image.
'''
def __init__(self, prob=0.3):
self.prob = prob
def __call__(self,data):
rgbA, depthA, rgbB, depthB, maskA, maskB,prior = data
rgbB_backup = rgbB.copy()
depthB_backup = depthB.copy()
maskB_backup = maskB.copy().astype(np.uint8)
num_valid = np.sum(maskB_backup)
if np.random.uniform(0,1) >= self.prob:
return rgbA, depthA, rgbB, depthB, maskA, maskB,prior
H = rgbB.shape[0]
W = rgbB.shape[1]
corner_uv = (np.random.randint(0,W),np.random.randint(0,H))
tlbr = np.random.choice([0,1,2,3])
i = tlbr
while True:
if i==0: #top left
rgbB[:corner_uv[1],:corner_uv[0],:] = 0
depthB[:corner_uv[1],:corner_uv[0]] = -9999
maskB[:corner_uv[1],:corner_uv[0]] = 0
elif i==1: #top right
rgbB[:corner_uv[1],corner_uv[0]:,:] = 0
depthB[:corner_uv[1],corner_uv[0]:] = -9999
maskB[:corner_uv[1],corner_uv[0]:] = 0
elif i==2: #bottom left
rgbB[corner_uv[1]:,:corner_uv[0],:] = 0
depthB[corner_uv[1]:,:corner_uv[0]] = -9999
maskB[corner_uv[1]:,:corner_uv[0]] = 0
elif i==3:
rgbB[corner_uv[1]:,corner_uv[0]:,:] = 0
depthB[corner_uv[1]:,corner_uv[0]:] = -9999
maskB[corner_uv[1]:,corner_uv[0]:] = 0
remainedB_valid = maskB==1
if np.sum(remainedB_valid)/float(num_valid)<0.5: # Make sure at least remain some visibility of object
rgbB = rgbB_backup.copy()
depthB = depthB_backup.copy()
maskB = maskB_backup.copy()
i += 1
i = i%4
else:
break
if i==tlbr:
corner_uv = (np.random.randint(0,W),np.random.randint(0,H))
tlbr = np.random.choice([0,1,2,3])
i = tlbr
return rgbA, depthA, rgbB, depthB, maskA, maskB,prior