嵌入式开发之davinci--- 8148/8168/8127 中的图像处理算法优化库vlib

The Texas Instruments VLIB is an optimizedImage/Video Processing Functions Library for C programmers using c674x devices.It includes many C-callable, assembly-optimized, general-purpose image/videoprocessing routines.

运行这些实例的速度要比用ANSI C编写的同样代码效率高，性能可提高10倍，可以大大减少开发时间。

可供用于：

背景建模&相减

物体特征提取

跟踪与检测

低级像素处理（low-levelpixel processing）

安装之后，预编译的库有：

vlib.lib : Main optimized vlib library

vlib_cn.lib : C Natural Implementation of vlib library

common.lib : Common functions required for testing kernels.

Integration

对于单核或者多核系统，集成时需要以下步骤：

在系统代码中调用API

需要包含vlib.h

编译代码

编译时，编译器需要能够搜索packages目录，以找到kernelheaders

链接VLIB

-lvlib库所在的目录

支持的函数：

Exponentially-Weighted Running Mean of a Video

Exponentially-Weighted Running Variance of a Video

Uniformly-Weighted Running Mean of a Video

Uniformly-Weighted Running Variance of a Video

Statistical Background Subtraction

Mixture of Gaussians Background Modeling for Grayscale Video

Image Extraction From Background Models (8-Bit)

Packing and Unpacking of Binary Mask Images

Morphological Dilation

Morphological Erosion

Connected Components Labeling

Canny Edge Detection

Image Pyramid

Gaussian 5x5 Pyramid Kernel

Gradient 5x5 Pyramid Kernel

Recursive IIR Filter: Horizontal, First-Order

Recursive IIR Filter: Vertical, First-Order

Integral Image

Hough Transform for Lines

Harris Corner Score

Non-Maximal Suppression (mask output)

Non-Maximal Suppression (list output)

Lucas-Kanade Feature Tracking (Sparse Optical Flow)

Normal Flow

Kalman Filter

Nelder-Mead Simplex

Legendre Moments

Histogram

Bhattacharya Distance

L1 Distance

Color Space Conversions

SAD Based Disparity

Image Rescaling

Histogram Equalization

Hog Cell

Good Features to Track

L2_normalization

Gradients, Magnitude, and Orientation

Hysteresis Thresholding

Grayscale Morphology

参考：VLIB User's Manual (c674x)
http://pan.baidu.com/share/link?shareid=1329571575&uk=218378286&app=zd http://blog.csdn.net/u014507805/article/details/24133013 http://download.csdn.net/detail/zengzhenxuan/4997278 http://blog.csdn.net/wangweitingaabbcc/article/details/6833265
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