type: "AnnotatedData"

layer {
  name: "data"
  type: "AnnotatedData"
  top: "data"
  top: "label"
  include {
    phase: TRAIN
  }
  transform_param {
    mirror: true
    mean_value: 104
    mean_value: 117
    mean_value: 123
    resize_param {
      prob: 1
      resize_mode: WARP
      height: 300
      width: 300
      interp_mode: LINEAR
      interp_mode: AREA
      interp_mode: NEAREST
      interp_mode: CUBIC
      interp_mode: LANCZOS4
    }
    emit_constraint {
      emit_type: CENTER
    }
    distort_param {
      brightness_prob: 0.5
      brightness_delta: 32
      contrast_prob: 0.5
      contrast_lower: 0.5
      contrast_upper: 1.5
      hue_prob: 0.5
      hue_delta: 18
      saturation_prob: 0.5
      saturation_lower: 0.5
      saturation_upper: 1.5
      random_order_prob: 0.0
    }
    expand_param {
      prob: 0.5
      max_expand_ratio: 4.0
    }
  }
  data_param {
    source: "examples/VOC0712/VOC0712_trainval_lmdb"
    batch_size: 8
    backend: LMDB
  }
  annotated_data_param {
    batch_sampler {
      max_sample: 1
      max_trials: 1
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        min_jaccard_overlap: 0.1
      }
      max_sample: 1
      max_trials: 50
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        min_jaccard_overlap: 0.3
      }
      max_sample: 1
      max_trials: 50
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        min_jaccard_overlap: 0.5
      }
      max_sample: 1
      max_trials: 50
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        min_jaccard_overlap: 0.7
      }
      max_sample: 1
      max_trials: 50
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        min_jaccard_overlap: 0.9
      }
      max_sample: 1
      max_trials: 50
    }
    batch_sampler {
      sampler {
        min_scale: 0.3
        max_scale: 1.0
        min_aspect_ratio: 0.5
        max_aspect_ratio: 2.0
      }
      sample_constraint {
        max_jaccard_overlap: 1.0
      }
      max_sample: 1
      max_trials: 50
    }
    label_map_file: "data/VOC0712/labelmap_voc.prototxt"
  }

}

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optional TransformationParameter transform_param = 36;

message TransformationParameter {
  // For data pre-processing, we can do simple scaling and subtracting the
  // data mean, if provided. Note that the mean subtraction is always carried
  // out before scaling.
  optional float scale = 1 [default = 1];
  // Specify if we want to randomly mirror data.
  optional bool mirror = 2 [default = false];
  // Specify if we would like to randomly crop an image.
  optional uint32 crop_size = 3 [default = 0];
  optional uint32 crop_h = 11 [default = 0];
  optional uint32 crop_w = 12 [default = 0];

  // mean_file and mean_value cannot be specified at the same time
  optional string mean_file = 4;
  // if specified can be repeated once (would substract it from all the channels)
  // or can be repeated the same number of times as channels
  // (would subtract them from the corresponding channel)
  repeated float mean_value = 5;
  // Force the decoded image to have 3 color channels.
  optional bool force_color = 6 [default = false];
  // Force the decoded image to have 1 color channels.
  optional bool force_gray = 7 [default = false];
  // Resize policy
  optional ResizeParameter resize_param = 8;
  // Noise policy
  optional NoiseParameter noise_param = 9;
  // Constraint for emitting the annotation after transformation.
  optional EmitConstraint emit_constraint = 10;
}

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 optional ResizeParameter resize_param = 8;

message ResizeParameter {
  //Probability of using this resize policy
  optional float prob = 1 [default = 1];


  enum Resize_mode {
    WARP = 1;
    FIT_SMALL_SIZE = 2;
    FIT_LARGE_SIZE_AND_PAD = 3;
  }
  optional Resize_mode resize_mode = 2 [default = WARP];
  optional uint32 height = 3 [default = 0];
  optional uint32 width = 4 [default = 0];


  enum Pad_mode {
    CONSTANT = 1;
    MIRRORED = 2;
    REPEAT_NEAREST = 3;
  }
  // Padding mode for BE_SMALL_SIZE_AND_PAD mode and object centering
  optional Pad_mode pad_mode = 5 [default = CONSTANT];
  // if specified can be repeated once (would fill all the channels)
  // or can be repeated the same number of times as channels
  // (would use it them to the corresponding channel)
  repeated float pad_value = 6;


  enum Interp_mode { //Same as in OpenCV
    LINEAR = 1;
    AREA = 2;
    NEAREST = 3;
    CUBIC = 4;
    LANCZOS4 = 5;
  }
  //interpolation for for resizing
  repeated Interp_mode interp_mode = 7;
}

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 optional EmitConstraint emit_constraint = 10;

// Condition for emitting annotations.
message EmitConstraint {
  enum EmitType {
    CENTER = 0;
    MIN_OVERLAP = 1;
  }
  optional EmitType emit_type = 1 [default = CENTER];
  // If emit_type is MIN_OVERLAP, provide the emit_overlap.
  optional float emit_overlap = 2;
}

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optional DataParameter data_param = 11;

message DataParameter {
  enum DB {
    LEVELDB = 0;
    LMDB = 1;
  }
  // Specify the data source.
  optional string source = 1;
  // Specify the batch size.
  optional uint32 batch_size = 4;
  // The rand_skip variable is for the data layer to skip a few data points
  // to avoid all asynchronous sgd clients to start at the same point. The skip
  // point would be set as rand_skip * rand(0,1). Note that rand_skip should not
  // be larger than the number of keys in the database.
  // DEPRECATED. Each solver accesses a different subset of the database.
  optional uint32 rand_skip = 7 [default = 0];
  optional DB backend = 8 [default = LEVELDB];
  // DEPRECATED. See TransformationParameter. For data pre-processing, we can do
  // simple scaling and subtracting the data mean, if provided. Note that the
  // mean subtraction is always carried out before scaling.
  optional float scale = 2 [default = 1];
  optional string mean_file = 3;
  // DEPRECATED. See TransformationParameter. Specify if we would like to randomly
  // crop an image.
  optional uint32 crop_size = 5 [default = 0];
  // DEPRECATED. See TransformationParameter. Specify if we want to randomly mirror
  // data.
  optional bool mirror = 6 [default = false];
  // Force the encoded image to have 3 color channels
  optional bool force_encoded_color = 9 [default = false];
  // Prefetch queue (Number of batches to prefetch to host memory, increase if
  // data access bandwidth varies).
  optional uint32 prefetch = 10 [default = 4];
}

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 optional AnnotatedDataParameter annotated_data_param = 200;

message AnnotatedDataParameter {
  // Define the sampler.
  repeated BatchSampler batch_sampler = 1;
  // Store label name and label id in LabelMap format.
  optional string label_map_file = 2;
}

// Sample a batch of bboxes with provided constraints.
message BatchSampler {
  // Use original image as the source for sampling.
  optional bool use_original_image = 1 [default = true];


  // Constraints for sampling bbox.
  optional Sampler sampler = 2;


  // Constraints for determining if a sampled bbox is positive or negative.
  optional SampleConstraint sample_constraint = 3;


  // If provided, break when found certain number of samples satisfing the
  // sample_constraint.
  optional uint32 max_sample = 4;


  // Maximum number of trials for sampling to avoid infinite loop.
  optional uint32 max_trials = 5 [default = 100];
}

// Sample a bbox in the normalized space [0, 1] with provided constraints.
message Sampler {
  // Minimum scale of the sampled bbox.
  optional float min_scale = 1 [default = 1.];
  // Maximum scale of the sampled bbox.
  optional float max_scale = 2 [default = 1.];


  // Minimum aspect ratio of the sampled bbox.
  optional float min_aspect_ratio = 3 [default = 1.];
  // Maximum aspect ratio of the sampled bbox.
  optional float max_aspect_ratio = 4 [default = 1.];
}


// Constraints for selecting sampled bbox.
message SampleConstraint {
  // Minimum Jaccard overlap between sampled bbox and all bboxes in
  // AnnotationGroup.
  optional float min_jaccard_overlap = 1;
  // Maximum Jaccard overlap between sampled bbox and all bboxes in
  // AnnotationGroup.
  optional float max_jaccard_overlap = 2;


  // Minimum coverage of sampled bbox by all bboxes in AnnotationGroup.
  optional float min_sample_coverage = 3;
  // Maximum coverage of sampled bbox by all bboxes in AnnotationGroup.
  optional float max_sample_coverage = 4;


  // Minimum coverage of all bboxes in AnnotationGroup by sampled bbox.
  optional float min_object_coverage = 5;
  // Maximum coverage of all bboxes in AnnotationGroup by sampled bbox.
  optional float max_object_coverage = 6;
}