Vehicle information providing apparatus
View Patent ↗A vehicle information providing apparatus determines and displays the range of presence of a person or other object based on the characteristics of images recorded by infrared cameras. An image processing unit carries out brightness change search processing in the infrared camera image zone represented by a gray scale using a search area wherein the size of a first detected area detected by binarization and correlation operation serves as the reference. In addition, the parallax between the first detected area and the searched area having a change in brightness is compared, a search area having a parallax that differs from that of the first searched area is eliminated, and a search area having a parallax identical to that of the first searched area is provided a highlighted display as an object identical to that of the first detected area.
1. A vehicle information providing apparatus that displays an image recorded by at least one infrared camera, the apparatus comprising:
an extracted zone setting device that sets a present zone of a physical object image, which corresponds to a physical object detected by multivalued processing of said image, as an extracted zone;
a search zone setting device that sets a search zone for detecting changes in brightness in the vicinity of said extracted zone; and
a physical object recognition device that searches for changes in brightness in said search zone, and provides a highlighted display of a portion of the search zone in which there is a change in brightness, along with said extracted zones, as the physical object image.
2. A vehicle information providing apparatus according to claim 1 , comprising:
two infrared cameras; and
a parallax calculating device that finds the parallax of the images recorded by said two cameras; and wherein
said physical object recognition device provides a highlighted display of the portion of the search zone in which there is a change in brightness and which has a parallax identical to said physical object image.
3. A vehicle information providing apparatus according to claim 1 , wherein, in the case that the search zone is set adjacent to an upper edge or a lower edge of the extracted zone and exceeds a range of said image, said physical object recognition device stops searching for changes in brightness.
4. A vehicle information providing apparatus according to claim 1 ,
further including a warning device which provides a warning to a driver of the vehicle when there is a high danger of collision by the vehicle with an object recognized by the physical object recognition device.
5. A vehicle information providing apparatus according to claim 1 ,
wherein said search zone includes a plurality of search areas, and said physical object recognition device selectively searches for changes in brightness in said search areas.
6. A vehicle information providing apparatus according to claim 5 ,
wherein said search areas separated from each other in at least one of columns and rows, and said physical object recognition device searches for changes in brightness in various ones of said search areas by said at least one of columns and rows based on detected changes in brightness in others of said search areas.
7. A vehicle information providing apparatus according to claim 1 ,
wherein said search zone includes a plurality of search areas, and said physical object recognition device searches for changes in brightness only in various ones of said search areas depending on brightness changes detected in others of said search areas.
8. A vehicle information providing apparatus according to claim 1 ,
wherein a size of said search zone is set proportional to a size of said extracted zone.
9. A vehicle information providing apparatus according to claim 1 , wherein
the highlighted display comprising a frame which surrounds both said portion of the search zone in which there is a change in brightness, and said physical object image.