JP2013122739A5 - - Google Patents

Claims (8)

An acquisition unit for acquiring an image to be analyzed;
A calculation unit that calculates a match ratio when applying a determination pattern that determines a determination condition according to deterioration of a white line of a pedestrian crossing while changing an application position with respect to the image acquired by the acquisition unit;
A detection unit for detecting a pedestrian crossing based on the match ratio calculated by the calculation unit;
I have a,
The calculating unit includes a white line portion and a portion between white lines alternately corresponding to the pedestrian crossing, and at least one of a plurality of adjacent pixels of the white line portion has a predetermined luminance or more. the you and calculates the matching ratio of the determined pattern to determine the condition analysis apparatus. The calculation unit is configured so that a white line portion and a portion between white lines exist alternately corresponding to a pedestrian crossing, and a matching ratio with a determination pattern having a determination condition that determination of the presence of some white line portions is unnecessary The analysis device according to claim 1, wherein: A reduction unit that reduces the image acquired by the acquisition unit;
The calculating unit, the analysis apparatus according to claim 1 or 2, characterized in that calculating a matching ratio between the determination patterns while changing the position on the reduced image by the reduction unit. The acquisition unit acquires an image taken by a vehicle-mounted camera,
A conversion unit that converts the image acquired by the acquisition unit into an overhead image;
The bird's-eye view image converted by the conversion unit further includes a region where an image is not projected from the image taken by the vehicle-mounted camera, and a specifying unit that identifies at least one of the region where the interior of the vehicle is seen in the bird's-eye view image. And
The calculating unit, the analysis apparatus according to any one of claims 1-3, characterized in that to calculate the matching rate by excluding the identified area by the specifying unit with respect to the overhead view image. Based on the matching ratio calculated by the calculation unit, the analysis apparatus according to any one of claims 1-4, characterized in that it further comprises an estimator for estimating the position of the pedestrian crossing in the image. The acquisition unit acquires the images continuously captured by the in-vehicle camera and the speed data of the vehicle in which the in-vehicle camera is mounted,
The detection unit detects a distance from an image in which a pedestrian crossing is detected to a pedestrian crossing,
Discrimination for discriminating an image in which the distance from the pedestrian crossing is within a predetermined range from the continuously photographed images based on the distance to the pedestrian crossing detected by the detection unit and the speed data acquired by the acquisition unit The analyzer according to any one of claims 1 to 5 , further comprising a section. On the computer,
The determination condition is that a white line portion and a portion between white lines alternately exist corresponding to the pedestrian crossing, and that at least some of the adjacent pixels of the white line portion have a predetermined luminance or higher. Calculate the match ratio when applying the judgment pattern to the image to be analyzed while changing the position,
An analysis program characterized by executing a process for detecting a pedestrian crossing based on the calculated match rate. Computer
The determination condition is that a white line portion and a portion between white lines alternately exist corresponding to the pedestrian crossing, and that at least some of the adjacent pixels of the white line portion have a predetermined luminance or higher. Calculate the match ratio when applying the judgment pattern to the image to be analyzed while changing the position,
An analysis method characterized by executing a process of detecting a pedestrian crossing based on the calculated match rate.