Changeset 17212 for lang/actionscript/ashaardetect/trunk/cv/SumImage.as

Timestamp:

08/07/08 20:54:15 (5 months ago)

Author:

gyuque

Message:

detection from video

Files:

• lang/actionscript/ashaardetect/trunk/cv/SumImage.as (modified) (4 diffs)

lang/actionscript/ashaardetect/trunk/cv/SumImage.as

@@ -9 +9 @@
 
                 private var mEqWinSize:CvSize = new CvSize();
+                private var mEqArea:int;
                 private var mEqX:int;
                 private var mEqY:int;
@@ -18 +19 @@
                 private var mData:Array;
                 private var mSQData:Array;
-                function SumImage(b:BitmapData)
+                function SumImage(b:BitmapData, make_sq:Boolean = true)
                 {
                         mWidth  = b.width  + 1;
                         mHeight = b.height + 1;
 
-                        mData        = new Array(mWidth*mHeight);
-                        mSQData      = new Array(mWidth*mHeight);
+                        mData = new Array(mWidth*mHeight);
 
-                        for (var i:int = 0;i < mWidth;i++)
-                        {
+                        if (make_sq)
+                                mSQData = new Array(mWidth*mHeight);
+
+                        var i:int;
+                        for (i = 0;i < mWidth;i++)
                                 mData[i] = 0;
-                                mSQData[i] = 0;
+
+                        if (make_sq) {
+                                for (i = 0;i < mWidth;i++)
+                                        mSQData[i] = 0;
+        
+                                sum(b, mData, mSQData, b.width, b.height);
                         }
-
-                        sum(b, mData, mSQData, b.width, b.height);
+                        else
+                                sum_nosq(b, mData, b.width, b.height);
                 }
 
@@ -44 +52 @@
                         mEqWinSize.width  = ww;
                         mEqWinSize.height = wh;
+                        mEqArea = ww*wh;
 
                         mQBase1 = y*mWidth + x;
                         mQBase2 = mQBase1 + ww;
                         mQBaseH = wh * mWidth;
+                }
+
+                public function get eqArea():int
+                {
+                        return mEqArea;
                 }
 /*
@@ -138 +152 @@
                         }
                 }
+
+                private function sum_nosq(src:BitmapData, ba:Array, swidth:int, sheight:int):void
+                {
+                        var x:int, y:int;
+                        var s:uint;
+                        var it:uint, t:uint;
+
+                        var curpos:int = mWidth;
+                        for (y = 0;y < sheight;y++)
+                        {
+                                ba[curpos++] = 0;
+
+                                s = 0;
+                                for (x = 0;x < swidth;x++)
+                                {
+                                        t = it = src.getPixel(x, y) & 0x0000ff;
+                                        s += t;
+                                        t  = ba[curpos - mWidth]  + s;
+                                        ba[curpos++] = t;
+                                }
+                        }
+                }
+
         }
 }