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computer-visionandaudio-lab's Introduction

实验一 语音端点检测

  • 双门限法
  1. 第一步是取一个较高的短时能量作为阈值MH。
  2. 第二步是取一个较低的能量阈值ML。
  3. 第三步是利用短时过零率，短时过零率的阈值为Zs。

实验二 差分编码（DPCM）

  • 语音差分编码（DPCM）边压缩，边解压

实验三 命令词识别

  1. 设计命令词识别任务

  2. 特征提取

  3. 识别测试

  4. 计算测试结果

  5. 扩展尝试

    • 将经过实验验证的算法，转化为能实时采集。

实验四 图像颜色空间的转换

  1. 完成如下颜色空间的转换。
  • RGB -> YIQ
  • RGB -> HSI
  • RGB -> YCbCr
  • RGB -> XYZ
  1. 选做：自己实现对 BMP 文件头的读取，并解析 BMP 图像文件。

实验五 亮度、对比度、饱和度、色度 & 空域滤波 & 边缘检测

  1. 实现对图像的亮度、对比度、饱和度、色度的调整。
  2. 统计图像的直方图。
  3. 实现图像的空域滤波：中值滤波和均值滤波。
  4. 实现图像的边缘检测：Roberts 算子和 Sobel 算子。
  5. 以下实验选做一个
    • 实现中值滤波的快速算法
    • 利用 CUDA 加速均值滤波

实验六 图像修复

  1. 去除图像中的背景和水印的去除。
  2. 去除人脸图像中的雀斑。

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