IR Hiding: Use of Specular Reflection for Short-Wavelength-Pass-Filter Detection to Prevent Re-recording of Screen Images
IR Hiding: Use of Specular Reflection for Short-Wavelength-Pass-Filter Detection to Prevent Re-recording of Screen Images
复制标题
红外隐藏：使用镜面反射进行短波长通滤波器检测以防止重新记录屏幕图像
DOI：
10.1007/978-3-662-46739-8_3
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
S. Gohshi
中科院分区：
文献类型：
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作者：
I. Echizen;T. Yamada;S. Gohshi
我们以前建议使用红外（IR） led来破坏记录的内容，以防止屏幕上显示的图像重新记录。这种方法是根据人与设备之间的感官知觉差异，在屏幕上显示的图像上添加人眼无法察觉的红外噪声，防止重复记录的方法。但是，使用装有短波通滤波器以消除噪声的数码摄像机，无法阻止重新录制。我们现在已经改进了我们的方法，增加了一个简单的对抗这种攻击的对策。它通过使用滤光片的红外镜面反射特性来检测从滤光片反射的红外光，从而检测使用装有短波长的通滤光片的数字摄像机的重新记录。我们将两种类型的红外发光二极管（子弹型和带镜头的芯片型）中的一种添加到安装在b3大小的屏幕上的原型重新记录预防系统中，从而实现了这一对策。测试表明，该增强系统可以检测带有短波通滤波器的摄像机。
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.