com.intel.analytics.zoo.feature.image.ImageFeatureToTensor.scala Maven / Gradle / Ivy

/*
 * Copyright 2018 Analytics Zoo Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intel.analytics.zoo.feature.image

import com.intel.analytics.bigdl.tensor.{Storage, Tensor}
import com.intel.analytics.bigdl.tensor.TensorNumericMath.TensorNumeric
import com.intel.analytics.bigdl.transform.vision.image.ImageFeature
import com.intel.analytics.bigdl.transform.vision.image.ImageFeature._
import com.intel.analytics.bigdl.transform.vision.image.opencv.OpenCVMat
import com.intel.analytics.zoo.feature.common.Preprocessing

import scala.reflect.ClassTag

/**
 * a Preprocessing that convert ImageFeature to a Tensor.
 */
class ImageFeatureToTensor[T: ClassTag]()(implicit ev: TensorNumeric[T])
  extends Preprocessing[ImageFeature, Tensor[T]] {

  override def apply(prev: Iterator[ImageFeature]): Iterator[Tensor[T]] = {
    prev.map { imf =>
      imf(ImageFeature.imageTensor).asInstanceOf[Tensor[T]]
    }
  }
}

object ImageFeatureToTensor {
  def apply[T: ClassTag]()
    (implicit ev: TensorNumeric[T]): ImageFeatureToTensor[T] =
    new ImageFeatureToTensor[T]()
}