Image Processing Apparatus for Dual Secret Public Display
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Solution Overview
Problem
Existing image processing technologies fail to efficiently display both secret and public images with high picture quality without reducing the contrast of the public image, and they do not effectively prevent personal information from being viewed from behind the user.
Innovation Solution
An image processing apparatus that creates two types of image signals, where one signal displays a secret image in a partial area of the screen, and the other signal is adjusted to maintain high luminance for the public image by subtracting the secret image's luminance from the public image, ensuring the public image is not dimmed and can be viewed by non-wearers of shutter glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secret image is displayed in a partial area of the screen using conventional image processing, then the secret image can be viewed by users wearing shutter glasses, but the public image luminance is reduced and contrast deteriorates
Solution Approach 1:
The screen is divided into a secret image display area and a public image display area. The secret image is displayed only in the partial secret image display area, while the public image is displayed across the entire screen including both areas. This segmentation allows the public image to maintain full luminance and contrast while the secret image remains protected in its dedicated area.
Solution Approach 2:
Different display qualities are applied to different areas of the screen. The secret image display area uses high luminance and contrast settings optimized for shutter glass viewing, while the public image display area maintains appropriate luminance and contrast for general viewing. This local quality differentiation resolves the contradiction between protecting secret images and maintaining public image quality.
2Loss of information
If shutter glasses are used to view secret images, then personal information can be protected from side viewing, but the public image quality is compromised due to luminance reduction
Solution Approach 1:
The display is segmented into distinct functional areas: a secret image display area for protected content viewed through shutter glasses, and a public image display area for general content. This segmentation ensures that information security requirements for the secret area do not compromise the quality requirements for the public area.
Solution Approach 2:
Each display area is optimized with appropriate quality parameters for its intended use. The secret image area uses high luminance and contrast settings suitable for shutter glass viewing, while the public image area maintains standard quality settings for general viewing, thus preserving overall public image quality while ensuring information security.
3Illumination intensity
If the entire screen is used to display secret images with high luminance, then secret image quality is improved, but the public image cannot be simultaneously displayed with adequate visibility
Solution Approach 1:
The screen is segmented into a secret image display area and a public image display area, allowing both types of images to be displayed simultaneously with appropriate luminance levels. The secret image area can use high luminance for quality viewing through shutter glasses, while the public image area maintains visibility for general viewing, thus achieving dual image display capability without compromising either function.
4Productivity
If conventional image processing is used to display both secret and public images, then both images can be shown, but the picture quality of both images deteriorates
Solution Approach 1:
The display screen is segmented into distinct areas for secret and public images, with each area optimized for its specific purpose. This segmentation allows efficient dual image display while maintaining high picture quality in both areas, as each area can use display parameters tailored to its requirements without interfering with the other.
Solution Approach 2:
Different quality parameters are applied locally to different display areas. The secret image display area uses high luminance and contrast settings optimized for shutter glass viewing, while the public image display area uses appropriate settings for general viewing. This local optimization ensures high picture quality for both images simultaneously, resolving the contradiction between display efficiency and image quality.
Data Source
AI summary
This invention is to provide an image processing apparatus, an image processing method, a program, and a display in which both of a secret image and a public image can be efficiently displayed with high picture quality without reducing contrast of the public image. One of output images is a secret image which displays an input secret image as one of input images in a partial area of a screen, all the output images including the secret image have a relationship to become, when a luminance value of each pixel thereof is totaled, an input public image as one of the input images; and during a period in which at least the secret image is being outputted, shutter glasses disposed between a display to which the image signals are inputted and user's eyes are set to a light transmission state.