364 lines
13 KiB
Python
364 lines
13 KiB
Python
#
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#
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# 0=================================0
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# | Kernel Point Convolutions |
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# 0=================================0
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#
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#
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# ----------------------------------------------------------------------------------------------------------------------
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#
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# Configuration class
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#
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# ----------------------------------------------------------------------------------------------------------------------
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#
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# Hugues THOMAS - 11/06/2018
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#
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from os.path import join
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import numpy as np
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# Colors for printing
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class bcolors:
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HEADER = '\033[95m'
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OKBLUE = '\033[94m'
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OKGREEN = '\033[92m'
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WARNING = '\033[93m'
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FAIL = '\033[91m'
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ENDC = '\033[0m'
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BOLD = '\033[1m'
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UNDERLINE = '\033[4m'
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class Config:
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"""
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Class containing the parameters you want to modify for this dataset
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"""
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##################
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# Input parameters
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##################
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# Dataset name
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dataset = ''
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# Type of network model
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dataset_task = ''
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# Number of classes in the dataset
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num_classes = 0
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# Dimension of input points
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in_points_dim = 3
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# Dimension of input features
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in_features_dim = 1
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# Radius of the input sphere (ignored for models, only used for point clouds)
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in_radius = 1.0
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# Number of CPU threads for the input pipeline
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input_threads = 8
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##################
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# Model parameters
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##################
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# Architecture definition. List of blocks
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architecture = []
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# Decide the mode of equivariance and invariance
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equivar_mode = ''
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invar_mode = ''
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# Dimension of the first feature maps
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first_features_dim = 64
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# Batch normalization parameters
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use_batch_norm = True
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batch_norm_momentum = 0.99
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# For segmentation models : ratio between the segmented area and the input area
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segmentation_ratio = 1.0
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###################
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# KPConv parameters
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###################
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# Number of kernel points
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num_kernel_points = 15
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# Size of the first subsampling grid in meter
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first_subsampling_dl = 0.02
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# Radius of convolution in "number grid cell". (2.5 is the standard value)
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conv_radius = 2.5
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# Radius of deformable convolution in "number grid cell". Larger so that deformed kernel can spread out
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deform_radius = 5.0
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# Kernel point influence radius
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KP_extent = 1.0
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# Influence function when d < KP_extent. ('constant', 'linear', 'gaussian') When d > KP_extent, always zero
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KP_influence = 'linear'
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# Aggregation function of KPConv in ('closest', 'sum')
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# Decide if you sum all kernel point influences, or if you only take the influence of the closest KP
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aggregation_mode = 'sum'
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# Fixed points in the kernel : 'none', 'center' or 'verticals'
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fixed_kernel_points = 'center'
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# Use modulateion in deformable convolutions
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modulated = False
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# For SLAM datasets like SemanticKitti number of frames used (minimum one)
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n_frames = 1
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# For SLAM datasets like SemanticKitti max number of point in input cloud
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max_in_points = 0
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#####################
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# Training parameters
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#####################
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# Network optimizer parameters (learning rate and momentum)
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learning_rate = 1e-3
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momentum = 0.9
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# Learning rate decays. Dictionary of all decay values with their epoch {epoch: decay}.
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lr_decays = {200: 0.2, 300: 0.2}
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# Gradient clipping value (negative means no clipping)
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grad_clip_norm = 100.0
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# Augmentation parameters
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augment_scale_anisotropic = True
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augment_scale_min = 0.9
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augment_scale_max = 1.1
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augment_symmetries = [False, False, False]
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augment_rotation = 'vertical'
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augment_noise = 0.005
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augment_color = 0.7
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# Augment with occlusions (not implemented yet)
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augment_occlusion = 'none'
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augment_occlusion_ratio = 0.2
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augment_occlusion_num = 1
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# Regularization loss importance
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weight_decay = 1e-3
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# The way we balance segmentation loss
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# > 'none': Each point in the whole batch has the same contribution.
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# > 'class': Each class has the same contribution (points are weighted according to class balance)
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# > 'batch': Each cloud in the batch has the same contribution (points are weighted according cloud sizes)
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segloss_balance = 'none'
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# Offset regularization loss
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offsets_loss = 'permissive'
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offsets_decay = 1e-2
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# Number of batch
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batch_num = 10
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# Maximal number of epochs
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max_epoch = 1000
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# Number of steps per epochs
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epoch_steps = 1000
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# Number of validation examples per epoch
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validation_size = 100
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# Number of epoch between each checkpoint
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checkpoint_gap = 50
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# Do we nee to save convergence
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saving = True
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saving_path = None
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def __init__(self):
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"""
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Class Initialyser
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"""
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# Number of layers
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self.num_layers = len([block for block in self.architecture if 'pool' in block or 'strided' in block]) + 1
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###################
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# Deform layer list
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###################
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#
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# List of boolean indicating which layer has a deformable convolution
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#
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layer_blocks = []
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self.deform_layers = []
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arch = self.architecture
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for block_i, block in enumerate(arch):
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# Get all blocks of the layer
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if not ('pool' in block or 'strided' in block or 'global' in block or 'upsample' in block):
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layer_blocks += [block]
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continue
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# Convolution neighbors indices
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# *****************************
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deform_layer = False
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if layer_blocks:
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if np.any(['deformable' in blck for blck in layer_blocks]):
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deform_layer = True
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if 'pool' in block or 'strided' in block:
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if 'deformable' in block:
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deform_layer = True
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self.deform_layers += [deform_layer]
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layer_blocks = []
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# Stop when meeting a global pooling or upsampling
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if 'global' in block or 'upsample' in block:
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break
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def load(self, path):
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filename = join(path, 'parameters.txt')
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with open(filename, 'r') as f:
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lines = f.readlines()
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# Class variable dictionary
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for line in lines:
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line_info = line.split()
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if len(line_info) > 2 and line_info[0] != '#':
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if line_info[2] == 'None':
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setattr(self, line_info[0], None)
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elif line_info[0] == 'lr_decay_epochs':
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self.lr_decays = {int(b.split(':')[0]): float(b.split(':')[1]) for b in line_info[2:]}
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elif line_info[0] == 'architecture':
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self.architecture = [b for b in line_info[2:]]
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elif line_info[0] == 'augment_symmetries':
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self.augment_symmetries = [bool(int(b)) for b in line_info[2:]]
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elif line_info[0] == 'num_classes':
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if len(line_info) > 3:
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self.num_classes = [int(c) for c in line_info[2:]]
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else:
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self.num_classes = int(line_info[2])
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else:
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attr_type = type(getattr(self, line_info[0]))
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if attr_type == bool:
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setattr(self, line_info[0], attr_type(int(line_info[2])))
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else:
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setattr(self, line_info[0], attr_type(line_info[2]))
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self.saving = True
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self.saving_path = path
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self.__init__()
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def save(self):
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with open(join(self.saving_path, 'parameters.txt'), "w") as text_file:
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text_file.write('# -----------------------------------#\n')
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text_file.write('# Parameters of the training session #\n')
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text_file.write('# -----------------------------------#\n\n')
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# Input parameters
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text_file.write('# Input parameters\n')
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text_file.write('# ****************\n\n')
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text_file.write('dataset = {:s}\n'.format(self.dataset))
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text_file.write('dataset_task = {:s}\n'.format(self.dataset_task))
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if type(self.num_classes) is list:
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text_file.write('num_classes =')
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for n in self.num_classes:
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text_file.write(' {:d}'.format(n))
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text_file.write('\n')
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else:
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text_file.write('num_classes = {:d}\n'.format(self.num_classes))
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text_file.write('in_points_dim = {:d}\n'.format(self.in_points_dim))
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text_file.write('in_features_dim = {:d}\n'.format(self.in_features_dim))
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text_file.write('in_radius = {:.3f}\n'.format(self.in_radius))
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text_file.write('input_threads = {:d}\n\n'.format(self.input_threads))
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# Model parameters
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text_file.write('# Model parameters\n')
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text_file.write('# ****************\n\n')
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text_file.write('architecture =')
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for a in self.architecture:
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text_file.write(' {:s}'.format(a))
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text_file.write('\n')
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text_file.write('equivar_mode = {:s}\n'.format(self.equivar_mode))
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text_file.write('invar_mode = {:s}\n'.format(self.invar_mode))
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text_file.write('num_layers = {:d}\n'.format(self.num_layers))
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text_file.write('first_features_dim = {:d}\n'.format(self.first_features_dim))
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text_file.write('use_batch_norm = {:d}\n'.format(int(self.use_batch_norm)))
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text_file.write('batch_norm_momentum = {:.3f}\n\n'.format(self.batch_norm_momentum))
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text_file.write('segmentation_ratio = {:.3f}\n\n'.format(self.segmentation_ratio))
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# KPConv parameters
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text_file.write('# KPConv parameters\n')
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text_file.write('# *****************\n\n')
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text_file.write('first_subsampling_dl = {:.3f}\n'.format(self.first_subsampling_dl))
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text_file.write('num_kernel_points = {:d}\n'.format(self.num_kernel_points))
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text_file.write('conv_radius = {:.3f}\n'.format(self.conv_radius))
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text_file.write('deform_radius = {:.3f}\n'.format(self.deform_radius))
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text_file.write('fixed_kernel_points = {:s}\n'.format(self.fixed_kernel_points))
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text_file.write('KP_extent = {:.3f}\n'.format(self.KP_extent))
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text_file.write('KP_influence = {:s}\n'.format(self.KP_influence))
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text_file.write('aggregation_mode = {:s}\n'.format(self.aggregation_mode))
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text_file.write('modulated = {:d}\n'.format(int(self.modulated)))
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text_file.write('n_frames = {:d}\n'.format(self.n_frames))
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text_file.write('max_in_points = {:d}\n\n'.format(self.max_in_points))
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# Training parameters
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text_file.write('# Training parameters\n')
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text_file.write('# *******************\n\n')
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text_file.write('learning_rate = {:f}\n'.format(self.learning_rate))
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text_file.write('momentum = {:f}\n'.format(self.momentum))
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text_file.write('lr_decay_epochs =')
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for e, d in self.lr_decays.items():
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text_file.write(' {:d}:{:f}'.format(e, d))
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text_file.write('\n')
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text_file.write('grad_clip_norm = {:f}\n\n'.format(self.grad_clip_norm))
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text_file.write('augment_symmetries =')
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for a in self.augment_symmetries:
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text_file.write(' {:d}'.format(int(a)))
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text_file.write('\n')
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text_file.write('augment_rotation = {:s}\n'.format(self.augment_rotation))
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text_file.write('augment_noise = {:f}\n'.format(self.augment_noise))
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text_file.write('augment_occlusion = {:s}\n'.format(self.augment_occlusion))
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text_file.write('augment_occlusion_ratio = {:.3f}\n'.format(self.augment_occlusion_ratio))
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text_file.write('augment_occlusion_num = {:d}\n'.format(self.augment_occlusion_num))
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text_file.write('augment_scale_anisotropic = {:d}\n'.format(int(self.augment_scale_anisotropic)))
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text_file.write('augment_scale_min = {:.3f}\n'.format(self.augment_scale_min))
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text_file.write('augment_scale_max = {:.3f}\n'.format(self.augment_scale_max))
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text_file.write('augment_color = {:.3f}\n\n'.format(self.augment_color))
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text_file.write('weight_decay = {:f}\n'.format(self.weight_decay))
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text_file.write('segloss_balance = {:s}\n'.format(self.segloss_balance))
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text_file.write('offsets_loss = {:s}\n'.format(self.offsets_loss))
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text_file.write('offsets_decay = {:f}\n'.format(self.offsets_decay))
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text_file.write('batch_num = {:d}\n'.format(self.batch_num))
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text_file.write('max_epoch = {:d}\n'.format(self.max_epoch))
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if self.epoch_steps is None:
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text_file.write('epoch_steps = None\n')
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else:
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text_file.write('epoch_steps = {:d}\n'.format(self.epoch_steps))
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text_file.write('validation_size = {:d}\n'.format(self.validation_size))
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text_file.write('checkpoint_gap = {:d}\n'.format(self.checkpoint_gap))
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