Add discrete cosine transform

README.md

@@ -1,64 +1,90 @@
 
 # BlindWatermark
-[![Travis (.org)](https://img.shields.io/travis/USER/REPO.svg)](https://travis-ci.org/ww23/BlindWatermark)
+[![Build Status](https://travis-ci.org/ww23/BlindWatermark.svg?branch=master)](https://travis-ci.org/ww23/BlindWatermark)  
 
-Java 盲水印
-在图片上加肉眼无法分辨的水印
+在图片上加肉眼很难分辨的水印
 
 * 原理
      * Encode:  
-     原图 --- 傅立叶变换 ---> 频域图 + 水印 --- 逆变换 ---> 带水印图
+     原图 --- 变换 ---> 变换域 + 水印 --- 逆变换 ---> 带水印图
      * Decode(文字水印):  
-     带水印图 --- 傅立叶变换 ---> 频域图
+     带水印图 --- 变换 ---> 变换域
      * Decode(图片水印):  
-     原图 --- 傅立叶变换 --> 原图频域图  
-     带水印图 --- 傅立叶变换 ---> 频域图 - 原图频域图
-
-* 文件  
-    ├── gakki-img-dc.png   * 反解水印图(图片水印)  
-    ├── gakki-text-dc.png  * 反解水印图(文字水印)  
-    ├── gakki-wm-img.png   * 带图片盲水印的图  
-    ├── gakki-wm-text.png  * 带文字盲水印的图  
-    ├── gakki.png          * 原图  
-    └── wm.png             * 图片水印  
-
-### Usage:
+     原图 --- 变换 --> 原图变换域  
+     带水印图 --- 变换 ---> 变换域 - 原图变换域
+
+### Usage
 
     Usage: java -jar BlindWatermark.jar <commands> [args...]
         commands:
-                encode <option> <image-src>  <watermark-text>       <image-encoded(text)>
-                encode <option> <image-src>  <watermark-image>      <image-encoded(image)>
-                decode <image-encode(text)>  <image-decode>
-                decode <image-src>           <image-encoded(image)> <image-decode>
+            encode <option> <image-src> <watermark-text> <image-encoded(text)>
+            encode <option> <image-src> <watermark-image> <image-encoded(image)>
+            decode <option> <image-encode(text)> <image-decode>
+            decode <option> <image-src> <image-encoded(image)> <image-decode>
         options:
-                -i add image watermark
-                -t add text  watermark
-### Build:
+            -c discrete cosine transform
+            -f discrete fourier transform
+            -i image watermark
+            -t text  watermark
+        example:
+            encode -ft input.png watermark output.png
+### Build
 
 	gradle build
 
-### Demo:
+### Demo
 
     原图:
-![image](https://github.com/ww23/BlindWatermark/blob/master/gakki.png)
+![image](gakki-src.png)
+
+    加文字水印(DFT):
+    java -jar BlindWatermark.jar encode -ft gakki-src.png mywife gakki-dft-text-ec.png
+![image](gakki-dft-text-ec.png)
+
+    文字水印解码(DFT):
+    java -jar BlindWatermark.jar decode -ft gakki-dft-text-ec.png gakki-dft-text-dc.png
+![image](gakki-dft-text-dc.png)
+
+    加图片水印(DFT):
+    java -jar BlindWatermark.jar encode -fi gakki-src.png watermark.png gakki-dft-img-ec.png
+![image](gakki-dft-img-ec.png)
+
+    图片水印解码(DFT):
+    java -jar BlindWatermark.jar decode -fi gakki-src.png gakki-dft-img-ec.png gakki-dft-img-dc.png
+![image](gakki-dft-img-dc.png)
+
+    加文字水印(DCT):
+    java -jar BlindWatermark.jar encode -ct gakki-src.png mywife gakki-dct-text-ec.jpg
+![image](gakki-dct-text-ec.jpg)
+
+    文字水印解码(DCT):
+    java -jar BlindWatermark.jar decode -ct gakki-dct-text-ec.jpg gakki-dct-text-dc.jpg
+![image](gakki-dct-text-dc.jpg)
+
+    加图片水印(DCT):
+    java -jar BlindWatermark.jar encode -ci gakki-src.png watermark.png gakki-dct-img-ec.jpg
+![image](gakki-dct-img-ec.jpg)
+
+    图片水印解码(DCT):
+    java -jar BlindWatermark.jar decode -ci gakki-src.png gakki-dct-img-ec.jpg gakki-dct-img-dc.jpg
+![image](gakki-dct-img-dc.jpg)
+
+### Reference
 
-    加文字水印:
-    java -jar BlindWatermark.jar encode -t gakki.png mywife gakki-wm-text.png
-![image](https://github.com/ww23/BlindWatermark/blob/master/gakki-wm-text.png)
+* [OpenCV  Discrete Fourier Transform](https://docs.opencv.org/3.4/d8/d01/tutorial_discrete_fourier_transform.html)
 
-    加图片水印:
-    java -jar BlindWatermark.jar encode -i gakki.png wm.png gakki-wm-img.png
-![image](https://github.com/ww23/BlindWatermark/blob/master/wm.png)
-![image](https://github.com/ww23/BlindWatermark/blob/master/gakki-wm-img.png)
+### License
 
-    文字水印解码:
-    java -jar BlindWatermark.jar decode gakki-wm-text.png gakki-text-dc.png
-![image](https://github.com/ww23/BlindWatermark/blob/master/gakki-text-dc.png)
+    Copyright 2018 ww23(https://github.com/ww23/BlindWatermark).
 
-    图片水印解码:
-    java -jar BlindWatermark.jar decode gakki.png gakki-wm-img.png gakki-img-dc.png
-![image](https://github.com/ww23/BlindWatermark/blob/master/gakki-img-dc.png)
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
 
-### Reference:
+         http://www.apache.org/licenses/LICENSE-2.0
 
-* [OpenCV](https://docs.opencv.org/3.4/d8/d01/tutorial_discrete_fourier_transform.html) Discrete Fourier Transform	
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.