gx
chenyc
2025-02-12 ea42ff3ebee1eeb3fb29423aa848a249441db81c
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/**
 * @license
 * Copyright 2020 Google LLC. All Rights Reserved.
 * 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.
 * =============================================================================
 */
import { getTestImageAsTensor4d } from '../../image_test_util';
import * as tf from '../../index';
import { ALL_ENVS, describeWithFlags } from '../../jasmine_util';
import { expectArraysClose } from '../../test_util';
describeWithFlags('flipLeftRight', ALL_ENVS, () => {
    it('should flip (1x2x2x4)', async () => {
        const image = tf.tensor([
            // batch 1
            [
                // row 1
                [
                    [1, 2, 3, 255],
                    [4, 5, 6, 255],
                ],
                // row 2
                [
                    [7, 8, 9, 255],
                    [10, 11, 12, 255],
                ],
            ],
        ]);
        const flipped = tf.image.flipLeftRight(image);
        expectArraysClose([4, 5, 6, 255, 1, 2, 3, 255, 10, 11, 12, 255, 7, 8, 9, 255], await flipped.data());
    });
    it('should flip (2x2x2x4)', async () => {
        const image = tf.tensor([
            // batch 1
            [
                // row 1
                [
                    [1, 2, 3, 255],
                    [4, 5, 6, 255],
                ],
                // row 2
                [
                    [7, 8, 9, 255],
                    [10, 11, 12, 255],
                ],
            ],
            // batch 2
            [
                // row 1
                [
                    [101, 102, 103, 255],
                    [104, 105, 106, 255],
                ],
                // row 2
                [
                    [107, 108, 109, 255],
                    [110, 111, 112, 255],
                ],
            ],
        ]);
        const flipped = tf.image.flipLeftRight(image);
        expectArraysClose([
            // batch 1
            ...[4, 5, 6, 255, 1, 2, 3, 255, 10, 11, 12, 255, 7, 8, 9, 255],
            // batch 2
            ...[104, 105, 106, 255, 101, 102, 103, 255, 110, 111, 112, 255, 107,
                108, 109, 255],
        ], await flipped.data());
    });
    it('should flip (from image)', async () => {
        const flippedPixels = tf.image.flipLeftRight(getTestImageAsTensor4d()).toInt();
        const flippedPixelsData = await flippedPixels.data();
        const expected = [
            230, 133, 18, 255, 241, 153, 43, 255, 224, 156, 55, 255, 212, 157, 75,
            255, 200, 155, 98, 255, 183, 138, 109, 255, 171, 120, 117, 255, 156, 100,
            111, 255, 233, 148, 31, 255, 250, 177, 64, 255, 241, 188, 82, 255, 230,
            193, 104, 255, 220, 190, 128, 255, 202, 174, 137, 255, 186, 152, 140, 255,
            168, 129, 130, 255, 222, 164, 41, 255, 247, 201, 81, 255, 243, 220, 106,
            255, 235, 227, 128, 255, 225, 228, 151, 255, 211, 216, 162, 255, 199, 198,
            168, 255, 179, 176, 159, 255, 191, 170, 61, 255, 218, 210, 103, 255, 213,
            230, 126, 255, 201, 236, 142, 255, 191, 239, 165, 255, 184, 234, 181, 255,
            179, 226, 194, 255, 163, 208, 187, 255, 135, 166, 86, 255, 162, 206, 127,
            255, 155, 226, 146, 255, 141, 232, 162, 255, 130, 235, 179, 255, 121, 231,
            192, 255, 119, 226, 206, 255, 108, 214, 202, 255, 71, 143, 97, 255, 98,
            181, 135, 255, 94, 206, 156, 255, 87, 220, 175, 255, 76, 225, 193, 255,
            64, 219, 201, 255, 62, 217, 213, 255, 55, 207, 212, 255, 15, 115, 105,
            255, 39, 150, 141, 255, 37, 177, 164, 255, 35, 200, 186, 255, 30, 209,
            205, 255, 19, 203, 211, 255, 19, 204, 222, 255, 18, 200, 224, 255, 0,
            102, 113, 255, 6, 133, 140, 255, 3, 158, 162, 255, 4, 182, 186, 255,
            0, 194, 204, 255, 0, 189, 209, 255, 0, 192, 221, 255, 0, 193, 228,
            255
        ];
        expectArraysClose(expected, flippedPixelsData);
    });
    it('throws when input is int32', async () => {
        const image = tf.tensor([[[[1, 2, 3, 255]], [[7, 8, 9, 255]]]], [1, 2, 1, 4], 'int32');
        expect(() => tf.image.flipLeftRight(image))
            .toThrowError(/Argument 'image' passed to 'flipLeftRight' must be float32/);
    });
});
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* @license\n * Copyright 2020 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\nimport {getTestImageAsTensor4d} from '../../image_test_util';\nimport * as tf from '../../index';\nimport {ALL_ENVS, describeWithFlags} from '../../jasmine_util';\nimport {expectArraysClose} from '../../test_util';\n\ndescribeWithFlags('flipLeftRight', ALL_ENVS, () => {\n  it('should flip (1x2x2x4)', async () => {\n    const image: tf.Tensor4D = tf.tensor([\n      // batch 1\n      [\n        // row 1\n        [\n          [1, 2, 3, 255],\n          [4, 5, 6, 255],\n        ],\n        // row 2\n        [\n          [7, 8, 9, 255],\n          [10, 11, 12, 255],\n        ],\n      ],\n    ]);\n    const flipped = tf.image.flipLeftRight(image);\n    expectArraysClose(\n        [4, 5, 6, 255, 1, 2, 3, 255, 10, 11, 12, 255, 7, 8, 9, 255],\n        await flipped.data());\n  });\n\n  it('should flip (2x2x2x4)', async () => {\n    const image: tf.Tensor4D = tf.tensor([\n      // batch 1\n      [\n        // row 1\n        [\n          [1, 2, 3, 255],\n          [4, 5, 6, 255],\n        ],\n        // row 2\n        [\n          [7, 8, 9, 255],\n          [10, 11, 12, 255],\n        ],\n      ],\n      // batch 2\n      [\n        // row 1\n        [\n          [101, 102, 103, 255],\n          [104, 105, 106, 255],\n        ],\n        // row 2\n        [\n          [107, 108, 109, 255],\n          [110, 111, 112, 255],\n        ],\n      ],\n    ]);\n    const flipped = tf.image.flipLeftRight(image);\n    expectArraysClose(\n        [\n          // batch 1\n          ...[4, 5, 6, 255, 1, 2, 3, 255, 10, 11, 12, 255, 7, 8, 9, 255],\n          // batch 2\n          ...[104, 105, 106, 255, 101, 102, 103, 255, 110, 111, 112, 255, 107,\n              108, 109, 255],\n        ],\n        await flipped.data());\n  });\n\n  it('should flip (from image)', async () => {\n    const flippedPixels =\n        tf.image.flipLeftRight(getTestImageAsTensor4d()).toInt();\n    const flippedPixelsData = await flippedPixels.data();\n\n    const expected = [\n      230, 133, 18,  255, 241, 153, 43,  255, 224, 156, 55,  255, 212, 157, 75,\n      255, 200, 155, 98,  255, 183, 138, 109, 255, 171, 120, 117, 255, 156, 100,\n      111, 255, 233, 148, 31,  255, 250, 177, 64,  255, 241, 188, 82,  255, 230,\n      193, 104, 255, 220, 190, 128, 255, 202, 174, 137, 255, 186, 152, 140, 255,\n      168, 129, 130, 255, 222, 164, 41,  255, 247, 201, 81,  255, 243, 220, 106,\n      255, 235, 227, 128, 255, 225, 228, 151, 255, 211, 216, 162, 255, 199, 198,\n      168, 255, 179, 176, 159, 255, 191, 170, 61,  255, 218, 210, 103, 255, 213,\n      230, 126, 255, 201, 236, 142, 255, 191, 239, 165, 255, 184, 234, 181, 255,\n      179, 226, 194, 255, 163, 208, 187, 255, 135, 166, 86,  255, 162, 206, 127,\n      255, 155, 226, 146, 255, 141, 232, 162, 255, 130, 235, 179, 255, 121, 231,\n      192, 255, 119, 226, 206, 255, 108, 214, 202, 255, 71,  143, 97,  255, 98,\n      181, 135, 255, 94,  206, 156, 255, 87,  220, 175, 255, 76,  225, 193, 255,\n      64,  219, 201, 255, 62,  217, 213, 255, 55,  207, 212, 255, 15,  115, 105,\n      255, 39,  150, 141, 255, 37,  177, 164, 255, 35,  200, 186, 255, 30,  209,\n      205, 255, 19,  203, 211, 255, 19,  204, 222, 255, 18,  200, 224, 255, 0,\n      102, 113, 255, 6,   133, 140, 255, 3,   158, 162, 255, 4,   182, 186, 255,\n      0,   194, 204, 255, 0,   189, 209, 255, 0,   192, 221, 255, 0,   193, 228,\n      255\n    ];\n\n    expectArraysClose(expected, flippedPixelsData);\n  });\n\n  it('throws when input is int32', async () => {\n    const image: tf.Tensor4D = tf.tensor(\n        [[[[1, 2, 3, 255]], [[7, 8, 9, 255]]]], [1, 2, 1, 4], 'int32');\n    expect(() => tf.image.flipLeftRight(image))\n        .toThrowError(\n            /Argument 'image' passed to 'flipLeftRight' must be float32/);\n  });\n});\n"]}