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Android-FaceDetectAndTracking

Sample Application

Click to Download the simple apk

##Other

##2015-07-03 因为扫描人脸需要正脸扫描 所以在jni对图片进行了90度旋转再扫描人脸,而camshit追踪不依赖于物体的形状变化所以 在追踪时取消图片旋转,最终对Rect坐标旋转,速度按我的测试机从130ms左右提高到60ms左右,差不多一倍的速度,丢失的情况也好一点了.

##2015-07-08 为了更远距离精准扫描人脸 摄像头预览大小设置成最大,以我的测试机为例是1280x960,而camshift 不依赖物体大小变化所以在追踪时对图片进行压缩640x480(太小也不行,容易变形),速度从60ms每次提高在35ms左右, 另外增加丢失判断追踪区域大小大于初始化大小1.5倍或者小于初始化大小0.25视为严重变形判断为丢失,快速移动下丢失情况又好一点了,但复杂背景色差变形依然存在.

##2015-07-11 增加多人追踪,异步检测,camshift追踪区域从整个脸部缩小范围锁定额头,复杂背景下更容易锁定不易变形,但多个人追踪导致速度下降了一些。

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