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imageYUV420CenterCropToFloatBuffer() — pytorch Function Reference

Architecture documentation for the imageYUV420CenterCropToFloatBuffer() function in TensorImageUtils.java from the pytorch codebase.

Function java TorchVisionMobile ImagePreproc calls 6 called by 2

Entity Profile

Dependency Diagram

graph TD
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514["imageYUV420CenterCropToFloatBuffer()"]
  d5daf74c_cbc1_63a2_f328_50849691b6d6["imageYUV420CenterCropToFloatBuffer()"]
  d5daf74c_cbc1_63a2_f328_50849691b6d6 -->|calls| 5ed98bb2_a3e0_69aa_a5c4_dffa35d89514
  e7383de7_aca7_58ff_fd0d_6065330d96d2["imageYUV420CenterCropToFloat32Tensor()"]
  e7383de7_aca7_58ff_fd0d_6065330d96d2 -->|calls| 5ed98bb2_a3e0_69aa_a5c4_dffa35d89514
  d5daf74c_cbc1_63a2_f328_50849691b6d6["imageYUV420CenterCropToFloatBuffer()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| d5daf74c_cbc1_63a2_f328_50849691b6d6
  d8ee461f_74d8_b8d8_6126_45ec37c0d1e1["checkOutBufferCapacity()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| d8ee461f_74d8_b8d8_6126_45ec37c0d1e1
  05a4bac3_dc7f_c9e5_0d8d_97a63304a618["checkNormMeanArg()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| 05a4bac3_dc7f_c9e5_0d8d_97a63304a618
  e79553c3_aa4f_f1b9_50e7_c07930a30ab1["checkNormStdArg()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| e79553c3_aa4f_f1b9_50e7_c07930a30ab1
  59a3758a_6352_bb5a_8fba_62fd7f7216df["checkRotateCWDegrees()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| 59a3758a_6352_bb5a_8fba_62fd7f7216df
  091f809b_08d7_75e4_b6a4_9d012fd740cb["checkTensorSize()"]
  5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 -->|calls| 091f809b_08d7_75e4_b6a4_9d012fd740cb
  style 5ed98bb2_a3e0_69aa_a5c4_dffa35d89514 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

android/pytorch_android_torchvision/src/main/java/org/pytorch/torchvision/TensorImageUtils.java lines 261–314

  public static void imageYUV420CenterCropToFloatBuffer(
      final Image image,
      int rotateCWDegrees,
      final int tensorWidth,
      final int tensorHeight,
      float[] normMeanRGB,
      float[] normStdRGB,
      final FloatBuffer outBuffer,
      final int outBufferOffset,
      final MemoryFormat memoryFormat) {
    checkOutBufferCapacity(outBuffer, outBufferOffset, tensorWidth, tensorHeight);

    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);

    Image.Plane[] planes = image.getPlanes();
    Image.Plane Y = planes[0];
    Image.Plane U = planes[1];
    Image.Plane V = planes[2];

    int memoryFormatJniCode = 0;
    if (MemoryFormat.CONTIGUOUS == memoryFormat) {
      memoryFormatJniCode = 1;
    } else if (MemoryFormat.CHANNELS_LAST == memoryFormat) {
      memoryFormatJniCode = 2;
    }

    NativePeer.imageYUV420CenterCropToFloatBuffer(
        Y.getBuffer(),
        Y.getRowStride(),
        Y.getPixelStride(),
        U.getBuffer(),
        V.getBuffer(),
        U.getRowStride(),
        U.getPixelStride(),
        image.getWidth(),
        image.getHeight(),
        rotateCWDegrees,
        tensorWidth,
        tensorHeight,
        normMeanRGB,
        normStdRGB,
        outBuffer,
        outBufferOffset,
        memoryFormatJniCode);
  }

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Subdomains

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Called By

Source

Frequently Asked Questions

What does imageYUV420CenterCropToFloatBuffer() do?
imageYUV420CenterCropToFloatBuffer() is a function in the pytorch codebase.
What does imageYUV420CenterCropToFloatBuffer() call?
imageYUV420CenterCropToFloatBuffer() calls 6 function(s): checkNormMeanArg, checkNormStdArg, checkOutBufferCapacity, checkRotateCWDegrees, checkTensorSize, imageYUV420CenterCropToFloatBuffer.
What calls imageYUV420CenterCropToFloatBuffer()?
imageYUV420CenterCropToFloatBuffer() is called by 2 function(s): imageYUV420CenterCropToFloat32Tensor, imageYUV420CenterCropToFloatBuffer.

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