| #------------------------------------------------------------- |
| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| # |
| #------------------------------------------------------------- |
| |
| images = read($in_file) |
| brightness_adjustments = read($brightness_adjustments) |
| num_augmentations = nrow(brightness_adjustments) |
| augmented_images = matrix(0, rows=num_augmentations * nrow(images), cols=ncol(images)) |
| max_value=255 |
| |
| parfor (idx in 0:(nrow(images)-1), check = 0) { |
| i = idx + 1 |
| |
| image2d = matrix(images[i,], $height, $width) |
| |
| for(a in 1:num_augmentations) { |
| # do augmentation |
| img_out = img_brightness(image2d, as.integer(as.scalar(brightness_adjustments[a,1])), max_value) |
| |
| # reshape and store augmentation |
| augmented_images[idx*num_augmentations+a,] = matrix(img_out, 1, $width * $height) |
| } |
| } |
| |
| write(augmented_images, $out_file) |
