78 lines
2.7 KiB
Java
78 lines
2.7 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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package org.datavec.image;
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import org.apache.commons.io.FileUtils;
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import org.datavec.api.io.labels.ParentPathLabelGenerator;
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import org.datavec.api.split.FileSplit;
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import org.datavec.image.recordreader.ImageRecordReader;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.TemporaryFolder;
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import org.nd4j.linalg.io.ClassPathResource;
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import java.io.File;
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import java.util.Arrays;
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import java.util.List;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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public class LabelGeneratorTest {
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@Rule
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public TemporaryFolder testDir = new TemporaryFolder();
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@Test
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public void testParentPathLabelGenerator() throws Exception {
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//https://github.com/deeplearning4j/DataVec/issues/273
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File orig = new ClassPathResource("datavec-data-image/testimages/class0/0.jpg").getFile();
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for(String dirPrefix : new String[]{"m.", "m"}) {
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File f = testDir.newFolder();
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int numDirs = 3;
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int filesPerDir = 4;
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for (int i = 0; i < numDirs; i++) {
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File currentLabelDir = new File(f, dirPrefix + i);
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currentLabelDir.mkdirs();
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for (int j = 0; j < filesPerDir; j++) {
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File f3 = new File(currentLabelDir, "myImg_" + j + ".jpg");
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FileUtils.copyFile(orig, f3);
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assertTrue(f3.exists());
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}
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}
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ImageRecordReader rr = new ImageRecordReader(28, 28, 1, new ParentPathLabelGenerator());
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rr.initialize(new FileSplit(f));
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List<String> labelsAct = rr.getLabels();
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List<String> labelsExp = Arrays.asList(dirPrefix + "0", dirPrefix + "1", dirPrefix + "2");
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assertEquals(labelsExp, labelsAct);
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int expCount = numDirs * filesPerDir;
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int actCount = 0;
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while (rr.hasNext()) {
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rr.next();
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actCount++;
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}
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assertEquals(expCount, actCount);
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}
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}
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}
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