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model {
ssd {
num_classes: 2
image_resizer {
keep_aspect_ratio_resizer {
min_dimension: 768
max_dimension: 768
pad_to_max_dimension: true
}
}
feature_extractor {
type: "ssd_efficientnet-b2_bifpn_keras"
conv_hyperparams {
regularizer {
l2_regularizer {
weight: 4e-05
}
}
initializer {
truncated_normal_initializer {
mean: 0.0
stddev: 0.03
}
}
activation: SWISH
batch_norm {
decay: 0.99
scale: true
epsilon: 0.001
}
force_use_bias: true
}
bifpn {
min_level: 3
max_level: 7
num_iterations: 5
num_filters: 112
}
}
box_coder {
faster_rcnn_box_coder {
y_scale: 1.0
x_scale: 1.0
height_scale: 1.0
width_scale: 1.0
}
}
matcher {
argmax_matcher {
matched_threshold: 0.5
unmatched_threshold: 0.5
ignore_thresholds: false
negatives_lower_than_unmatched: true
force_match_for_each_row: true
use_matmul_gather: true
}
}
similarity_calculator {
iou_similarity {
}
}
box_predictor {
weight_shared_convolutional_box_predictor {
conv_hyperparams {
regularizer {
l2_regularizer {
weight: 4e-05
}
}
initializer {
random_normal_initializer {
mean: 0.0
stddev: 0.01
}
}
activation: SWISH
batch_norm {
decay: 0.99
scale: true
epsilon: 0.001
}
force_use_bias: true
}
depth: 112
num_layers_before_predictor: 3
kernel_size: 3
class_prediction_bias_init: -4.6
use_depthwise: true
}
}
anchor_generator {
multiscale_anchor_generator {
min_level: 3
max_level: 7
anchor_scale: 4.0
aspect_ratios: 1.0
aspect_ratios: 2.0
aspect_ratios: 0.5
scales_per_octave: 3
}
}
post_processing {
batch_non_max_suppression {
score_threshold: 1e-08
iou_threshold: 0.5
max_detections_per_class: 10
max_total_detections: 10
}
score_converter: SIGMOID
}
normalize_loss_by_num_matches: true
loss {
localization_loss {
weighted_smooth_l1 {
}
}
classification_loss {
weighted_sigmoid_focal {
gamma: 3.0
alpha: 0.25
}
}
classification_weight: 1.0
localization_weight: 1.0
}
encode_background_as_zeros: true
normalize_loc_loss_by_codesize: true
inplace_batchnorm_update: true
freeze_batchnorm: false
add_background_class: false
}
}
train_config {
batch_size: 6
data_augmentation_options {
random_horizontal_flip {
}
}
data_augmentation_options {
random_scale_crop_and_pad_to_square {
output_size: 768
scale_min: 0.1
scale_max: 2.0
}
}
sync_replicas: true
optimizer {
momentum_optimizer {
learning_rate {
cosine_decay_learning_rate {
learning_rate_base: 0.012
total_steps: 1216
warmup_learning_rate: 0.001
warmup_steps: 121
}
}
momentum_optimizer_value: 0.9
}
use_moving_average: false
}
fine_tune_checkpoint: "/home/iot/iti107-assignment-2/pretrained_models/efficientdet_d2_coco17_tpu-32/checkpoint/ckpt-0"
num_steps: 1216
startup_delay_steps: 0.0
replicas_to_aggregate: 8
max_number_of_boxes: 100
unpad_groundtruth_tensors: false
fine_tune_checkpoint_type: "detection"
use_bfloat16: false
fine_tune_checkpoint_version: V2
}
train_input_reader {
label_map_path: "/home/iot/iti107-assignment-2/data/label_map.pbtxt"
tf_record_input_reader {
input_path: "/home/iot/iti107-assignment-2/data/train.record"
}
}
eval_config {
metrics_set: "coco_detection_metrics"
use_moving_averages: false
batch_size: 1
}
eval_input_reader {
label_map_path: "/home/iot/iti107-assignment-2/data/label_map.pbtxt"
shuffle: false
num_epochs: 1
tf_record_input_reader {
input_path: "/home/iot/iti107-assignment-2/data/val.record"
}
}
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