To provide a parking support method and a parking supporting device for generating a high-quality peripheral image quickly without reducing a load to an image processing unit and quality even if image data photographed in different ambient light exist mixedly.

The image data G are acquired from a camera 26 provided in a vehicle to generate extraction data from the image data G. The extraction data are subjected to visual point transformation processing for generating transformation data, and a bird's-eye image is generated based on the transformation data. In this case, an image processing section 15 selects a prescribed a template for color correction based on the lighting state of a lamp at that time, a road surface, and illuminance, and uses the selected template for performing luminance correction to respective transformation data. The image processing section 15 selects the prescribed template for color correction based on the moon, time, and illuminance in photographing and uses the selected template for performing the luminance correction to respective transformation data.

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