Description: 在本文中，我們首先實作了 一個針對壓縮視訊（像是 H.264/AVC）之畫面解析度 改善
的方法。接著，我們分析這個方法的模擬結果。-In this thesis, we first implement a spatial resolution enhancement algorithm for H.264/AVC
compressed videos. Based on the analysis of the simulation results, we identify a few
shortcomings of this algorithm, like some visual artifacts in the enhanced videos and some
problems caused by scene change and fast motion. Then, we propose two methods to suppress
these artifacts, including adding a median regularization term in the spatial-domain and using a
median filter in the temporal domain. We also propose two methods, a global method and a
local method, to overcome the scene change and fast motion problems. With these
modifications, the artifacts and problems are suppressed significantly. Platform: |
Size: 1556480 |
Author:hekai |
Hits:
Description: 1、能对图像文件（bmp、 jpg、 tiff、 gif等）进行打开、保存、另存、打印、退出等功能操作；
2、数字图像的统计信息功能：包括直方图的统计及绘制、区域图的面积、周长的统计、线条图中的距离测量等；
3、数字图像的增强处理功能：
（1）空域中的点运算、直方图的均衡化、各种空间域平滑算法（如局部平滑滤波法、中值滤波等）、锐化算法（如梯度锐化法、高通滤波等）
（2）频域的各种增强方法：频域平滑、频域锐化、低通滤波、同态滤波等。
（3）色彩增强：伪彩色增强、真彩色增强等
4、图像分割：
（1）点、线（hough变换检测直线）、及边缘检测（梯度算子、拉普拉斯算子等）；
（2）区域分割包括阈值分割、区域生长、分裂合并等；
5、数字图像的变换：普通傅立叶变换(ft)与逆变换（ift）、快速傅立叶变换（fft）与逆变换(ifft)、离散余弦变换（DCT），小波变换等。-1, capable of image files (bmp, jpg, tiff, gif, etc.) open, save, save, print and exit functions such operations
2, the digital image statistics features include: histogram statistics and drawing, area of area, perimeter statistics, line graphs of the distance measurement
3, digital image enhancement processing functions:
(1) airspace point operations, histogram equalization, a variety of space-domain smoothing algorithm (such as local smoothing, median filtering, etc.), a sharpening algorithm (such as sharpening gradient method, high-pass filtering, etc.)
A variety of enhancement methods (2) the frequency domain: smooth frequency domain, frequency domain sharpening, low pass filter, homomorphic filtering.
(3) Color Enhancement: pseudo-color enhancement, true color enhancement, etc.
4, image segmentation:
(1) point line (hough transform to detect straight line), and edge detection (gradient operator, Laplace operator, etc.)
(2) dividing the region include thres Platform: |
Size: 169984 |
Author:马振磊 |
Hits:
Search - median filter local enhancement