Home / Function/ imageYUV420CenterCropToFloat32Tensor() — pytorch Function Reference

imageYUV420CenterCropToFloat32Tensor() — pytorch Function Reference

Architecture documentation for the imageYUV420CenterCropToFloat32Tensor() function in TensorImageUtils.java from the pytorch codebase.

Function java AndroidRuntime JavaAPI calls 7

Entity Profile

Dependency Diagram

graph TD
  da0052aa_0d0f_9bda_a558_296d9703af6b["imageYUV420CenterCropToFloat32Tensor()"]
  09321404_5d8c_f9fd_739a_1be11da65720["checkNormMeanArg()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| 09321404_5d8c_f9fd_739a_1be11da65720
  23b436aa_d9b0_0abc_b9e8_a029e620d1de["checkNormStdArg()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| 23b436aa_d9b0_0abc_b9e8_a029e620d1de
  d3c59c92_688b_4dd5_dcaf_8a64372dd00a["checkRotateCWDegrees()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| d3c59c92_688b_4dd5_dcaf_8a64372dd00a
  bdbf63f2_5e13_4e45_78f0_d8e4731e57e5["checkTensorSize()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| bdbf63f2_5e13_4e45_78f0_d8e4731e57e5
  af41549e_1d99_2a69_bc90_d5028530fd92["allocateFloatBuffer()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| af41549e_1d99_2a69_bc90_d5028530fd92
  7d987baf_1d44_31d6_f128_18964ed36ba8["fromBlob()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| 7d987baf_1d44_31d6_f128_18964ed36ba8
  96f1f166_e465_73ae_edbc_0841f2cf1414["imageYUV420CenterCropToFloatBuffer()"]
  da0052aa_0d0f_9bda_a558_296d9703af6b -->|calls| 96f1f166_e465_73ae_edbc_0841f2cf1414
  style da0052aa_0d0f_9bda_a558_296d9703af6b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

android/pytorch_android_torchvision/src/main/java/org/pytorch/torchvision/TensorImageUtils.java lines 195–226

  public static Tensor imageYUV420CenterCropToFloat32Tensor(
      final Image image,
      int rotateCWDegrees,
      final int tensorWidth,
      final int tensorHeight,
      float[] normMeanRGB,
      float[] normStdRGB,
      MemoryFormat memoryFormat) {
    if (image.getFormat() != ImageFormat.YUV_420_888) {
      throw new IllegalArgumentException(
          String.format(
              Locale.US, "Image format %d != ImageFormat.YUV_420_888", image.getFormat()));
    }

    checkNormMeanArg(normMeanRGB);
    checkNormStdArg(normStdRGB);
    checkRotateCWDegrees(rotateCWDegrees);
    checkTensorSize(tensorWidth, tensorHeight);

    final FloatBuffer floatBuffer = Tensor.allocateFloatBuffer(3 * tensorWidth * tensorHeight);
    imageYUV420CenterCropToFloatBuffer(
        image,
        rotateCWDegrees,
        tensorWidth,
        tensorHeight,
        normMeanRGB,
        normStdRGB,
        floatBuffer,
        0,
        memoryFormat);
    return Tensor.fromBlob(floatBuffer, new long[] {1, 3, tensorHeight, tensorWidth}, memoryFormat);
  }

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Frequently Asked Questions

What does imageYUV420CenterCropToFloat32Tensor() do?
imageYUV420CenterCropToFloat32Tensor() is a function in the pytorch codebase.
What does imageYUV420CenterCropToFloat32Tensor() call?
imageYUV420CenterCropToFloat32Tensor() calls 7 function(s): allocateFloatBuffer, checkNormMeanArg, checkNormStdArg, checkRotateCWDegrees, checkTensorSize, fromBlob, imageYUV420CenterCropToFloatBuffer.

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