Image exposure device, image exposure method, and program

An image exposure method in an image exposure device including an image display device having a plurality of pixels, a support portion that supports a photosensitive recording medium for recording an image displayed on the image display device in a state in which an exposure surface of the photosensitive recording medium faces the image display device, and a limiting member that is provided between the image display device and the support portion and limits an angle of light radiated from the image display device to the photosensitive recording medium, the method comprising:

• generating a display image in which an image quality of a color input image represented by input image data is deteriorated by emphasizing a density difference of a high-frequency component of the input image;
• and
• performing a control for generating an image of an R component, an image of a G component, and an image of a B component from the display image and sequentially displaying each of the image of the R component, the image of the G component, and the image of the B component on the image display device in a predetermined order to sequentially expose the photosensitive recording medium,
• wherein a blurred image is generated by applying an unsharp masking to the input image, a high-frequency component image representing a difference between the input image and the blurred image is generated, and the display image is generated by adding the high-frequency component image to the input image.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a process, the computer controlling an image exposure device including an image display device having a plurality of pixels, a support portion that supports a photosensitive recording medium for recording an image displayed on the image display device in a state in which an exposure surface of the photosensitive recording medium faces the image display device, and a limiting member that is provided between the image display device and the support portion and limits an angle of light radiated from the image display device to the photosensitive recording medium, the process comprising:

• generating a display image in which an image quality of a color input image represented by input image data is deteriorated by emphasizing a density difference of a high-frequency component of the input image;
• and
• performing a control for generating an image of an R component, an image of a G component, and an image of a B component from the display image and sequentially displaying each of the image of the R component, the image of the G component, and the image of the B component on the image display device in a predetermined order to sequentially expose the photosensitive recording medium,
• wherein a blurred image is generated by applying an unsharp masking to the input image, a high-frequency component image representing a difference between the input image and the blurred image is generated, and the display image is generated by adding the high-frequency component image to the input image.