From 6c2559b8357803fb3155fc3ae4bd4163b2c45494 Mon Sep 17 00:00:00 2001
From: Joe Zhao <ztuowen@gmail.com>
Date: Sat, 27 Jun 2015 20:41:53 +0800
Subject: readme

---
 README         | 28 ++++++++++++++++++++++++++++
 schmidFilter.m |  2 +-
 2 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 README

diff --git a/README b/README
new file mode 100644
index 0000000..785d750
--- /dev/null
+++ b/README
@@ -0,0 +1,28 @@
+Feature Extraction
+==================
+
+VIPeR specific
+
+publicly available Feat-ext source:
+https://github.com/rlayne/ELF-v2.0-Descriptor
+
+Requirement:
+matlab(tested with R2014b & R2015a under linux)
+bash/zsh(as default shell or change shebang to #!/bin/bash)
+
+How to use:
+./genRid.sh cam
+change cam to the directory name of dataset
+
+Structure:
+./genRid.sh
+    ./runMatlab.sh -> call matlab script or functions
+        ./parGetVecs.m -> calculate vectors of images in 'cam_a' & 'cam_b' to a.txt & b.txt
+            ./getVecsM.m -> get maximum % minimum
+            ./getVecs.m -> get histo using previously calculated maximum & minimum
+    combine a.txt b.txt to cam.rid
+
+!!Feature size is hardcoded, change in ./genRid.sh & ./parGetVecs.m!!
+
+Clean-up:
+redundancy in ./getFeatureExt.m & ./genFeatureVec.m
diff --git a/schmidFilter.m b/schmidFilter.m
index 12d4b30..e4f34fa 100644
--- a/schmidFilter.m
+++ b/schmidFilter.m
@@ -2,4 +2,4 @@ function fout = schmidFilter(t,sigma)
     sz=fix(4*sigma);
     [x,y] = meshgrid(-sz:sz,sz:-1:-sz);
     r=sqrt(x.^2+y.^2);
-    fout = filterNorm(cos((2*pi*t/sigma)*r).*exp(-(r.^2)/(2*sigma^2)));
+    fout = filterNorm(cos((pi*t/sigma)*r).*exp(-(r.^2)/(2*sigma^2)));
-- 
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