IR Hiding: Method to Prevent Re-recording Screen Image Built in Short Wavelength Pass Filter Detection Method Using Specular Reflection
IR Hiding: Method to Prevent Re-recording Screen Image Built in Short Wavelength Pass Filter Detection Method Using Specular Reflection
复制标题
红外隐藏：防止重新记录屏幕图像的方法内置短波长通滤波器检测方法使用镜面反射
DOI：
10.1007/978-3-642-32205-1_11
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
I. Echizen
中科院分区：
文献类型：
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作者：
Takayuki Yamada;S. Gohshi;I. Echizen
我们之前提出使用红外（IR）LED来破坏记录的内容，以防止重新记录屏幕上显示的图像。该方法基于人与设备之间的感官感知差异，并通过向屏幕上显示的图像添加IR噪声而不会被人眼检测到来防止重新记录。然而，它不能防止使用配备有短波长通滤波器以消除噪声的数字摄像机进行重新记录。我们现在已经通过添加针对此类攻击的简单对策来改进我们的方法。它通过使用滤波器的IR镜面反射特性来检测从滤波器反射的IR光，从而检测使用配备有短波长通滤波器的数字摄像机的重新记录。我们通过将两种类型的IR LED（子弹型和带透镜的芯片型）中的一种添加到安装在B3尺寸屏幕上的原型重录防止系统来实现该对策。测试表明，这种增强的系统可以检测附带短波长通过过滤器的摄像机。
We previously proposed using infrared (IR) LEDs to corrupt recorded content to prevent the re-recording of images displayed on a screen. This method is based on the difference in sensory perception between humans and devices and prevents re-recording by adding IR noise to the images displayed on the screen without it being detected by the human eye. However, it cannot prevent re-recording using digital camcorders equipped with a short wavelength pass filter to eliminate the noise. We have now improved our method by adding a simple countermeasure against such attacks. It detects IR light reflected off the filter by using the IR specular reflection properties of the filter, and thereby detects re-recording using digital camcorders equipped with a short wavelength pass filter. We implemented this countermeasure by adding one of two types of IR LEDs (bullet type and chip type with lens) to our prototype re-recording prevention system, which is installed on a B3-size screen. Testing showed that this enhanced system can detect camcorders with an attached short wavelength pass filter.