以下两个网站上的VL_PHOW文档真的不清楚:
http://www.vlfeat.org/api/sift.html
http://www.vlfeat.org/matlab/vl_phow.html
有人可以向我解释如何使用VL_PHOW访问图像中的每个像素。我希望能够为每个像素获得相关的直方图。
但是请解释参数是什么,因为我之后想要编辑它。我希望通过使用这种技术和HOG和LBP获得相同数量的功能。
Building a MuPDF lib on windows with Cygwin and android-ndk
Download MuPDF 1.3 Source from https://code.google.com/p/mupdf/downloads/list unzip to folder c:/mupdf-1.3-source
Install Cygwin: Download and run Run setup-x86.exe from http://cygwin.com/install.html when installing cygwin, make sure you selected make packages and C++ compilers
Make generate. open cygwin terminal, run
cd /cygdrive/
cd c/mupdf-1.3-source
make generate
Install android-ndk: download android-ndk-r9d-windows-x86.zip and unzip it to
c:/android-ndk-r9d
Build mupdf lib: on windows cmd console:
preparation:
cd c:/mupdf-1.3-source/platform/android
copy local.properties.sample local.properties
edit local.properties, uncomment
#sdk.dir=C:\\Program Files (x86)\\Android\\android-sdk
and change to
sdk.dir=REAL andforid-sdk Folder
build: while still on c:/mupdf-1.3-source/platform/android, run:
/android-ndk-r9d/ndk-build
Upon the completion of the build, a folder named libs will be created under
c:/mupdf-1.3-source/platform/android
Create android apk. Open eclipse, create a new android project from existing code, browse to c:/mupdf-1.3-source/platform/android, now you can create a mupdf apk.
答案 0 :(得分:0)
如您分享的链接所示,PHOW以多种分辨率计算DSIFT。因此,您必须了解DSIFT的工作原理。请参阅以下链接。 vl_dsift trying to get a feature vector at every pixel
它只是声明您无法从每个像素中提取特征。您必须从图像的所有四个边界跳过2像素厚的帧(假设您的binsize为1)。但是,通过使用一个binsize,您可以提取该帧中所有像素的要素。
您所请求参数的说明可在以下链接中找到。 http://www.vlfeat.org/matlab/vl_phow.html
您诚挚的......