• Masahiko Ogawa
  • Kazunori Shidoji
  • Yuji Matsuki


Images that are high resolution and wide angle cannot be acquired with a camera. Due to characteristics of the human visual system, however, the entire wide-angle image does not necessarily need to be high resolution. Thus, we examined the minimum resolution required in the field of view. The results showed that observers perceived the image similarly when the entire image was high resolution and when the resolution of the image at positions that were more than 20 and 40 degrees from the center of the visual field decreased to 25% and approximately 11% of the resolution of the gaze point, respectively. Additionally, we investigated whether the participants were able to distinguish between the original completely high-resolution image and processed images, which included triple-resolution, dual- resolution, and low-resolution images. The results demonstrate that the participants could not discriminate the triple-resolution images from the original images. Finally, we developed a stereoscopic camera system based on these results.

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