We have developed a new high-speed driving circuit of a multi-color LED panel by the use of FPGA for subjective super-resolution display. In the subjective super-resolution display, the coded display image is switched and displayed at high speed. The viewer makes an unconscious correction by fixational eye movement and perceives the resolution higher than the physical number of pixels of the LED panel. Our developed LED display drive circuit shows multi-color images at a sufficiently high frame rate enough to perform the subjective super-resolution effect. The maximum frequency is 8.5 kHz for 8 multi-color representations. We have designed spatiotemporal coding to show nine adjacent subpixel information for 9 multi-color subframes. The coded 9 subframes are alternately shown on the LED panel by the use of our developed FPGA circuit. We have verified that the image was updated at high speed. The unconscious correction by the fixational eye movement allows the viewer to perceive a higher resolution than the actual number of LED lamps. Through an evaluation experiment, we have verified that the subjective super-resolution effect was induced in a multi-color image, that is, the displayed image in the proposed method looked smoother than that in the normal display method.

我们开发了一种新型的多色LED面板高速驱动电路，利用FPGA实现主观超分辨率显示。在主观超分辨率显示中，编码显示图像被高速切换和显示。观看者通过注视眼球运动进行无意识的校正，并感知到高于 LED 面板物理像素数的分辨率。我们开发的 LED 显示驱动电路以足够高的帧速率显示多色图像，足以执行主观超分辨率效果。8 种多色表示的最大频率为 8.5 kHz。我们设计了时空编码来显示 9 个多色子帧的 9 个相邻子像素信息。通过使用我们开发的 FPGA 电路，编码的 9 个子帧交替显示在 LED 面板上。我们已经验证了图像是高速更新的。通过注视眼球运动进行的无意识校正使观看者能够感知到比实际 LED 灯数量更高的分辨率。通过评估实验，我们验证了在多色图像中诱发了主观超分辨率效应，即所提出的方法显示的图像比正常显示方法的显示更平滑。