Image processing device, radar apparatus, image processing method and image processing program

摘要

An image processing device which generates an image where a target object can be discriminated from an object other than the target object. An image processor (15), for echo signals read from a sweep memory (14), calculates a ratio of echo signals indicating a predetermined level or higher among the echo signals of a predetermined number of samples, and generates image data having a display element according to the calculated ratio. This ratio indicates a lower value for an object more isolated and a higher value for an object existing as a larger mass. The image processor (15)acquires color values according to the calculated ratio. Since the target object, such as a ship, is an isolated object and the ratio becomes low, the color values indicate red, and since inland is an object existing as a large mass and the ratio becomes high, the color values indicate green.

主权项

1. An image processing device including an image data generating module configured to generate image data, comprising:
a sample data output unit configured to receive echo signals and output data of respective samples obtained by discretizing the echo signals; a target selecting module configured to select, among the samples, samples within a predetermined range in a sample area; an extracting module configured to extract, among the samples determined by the target selecting module, samples that satisfy a predetermined reference value; and a ratio calculating module configured to calculate a ratio of the number of the extracted samples with respect to the number of the samples within the predetermined range, wherein the predetermined range is a range in an azimuth direction and/or a distance direction, satisfying the predetermined reference value corresponds to having a value higher than the echo signals resulting from background noise, the image data comprises a plurality of pixels, and the image data generating module determines one of three or more display modes for each pixel of the image data based on the ratio and the predetermined reference value.