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Panoramic sea-sky line extracting method based on improved Seam Carving

An extraction method, sea-antenna technology, applied in image data processing, instruments, calculations, etc., can solve problems affecting the accuracy of sea-antenna, increasing background complexity, etc.

Active Publication Date: 2016-04-06
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

The above-mentioned panoramic device area imaging increases the complexity of the background, which seriously affects the accuracy of sea antenna extraction, making it a challenging subject in the field of target detection

Method used

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  • Panoramic sea-sky line extracting method based on improved Seam Carving
  • Panoramic sea-sky line extracting method based on improved Seam Carving
  • Panoramic sea-sky line extracting method based on improved Seam Carving

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Embodiment

[0121] 1. Spectral residual method to obtain visual saliency map of panoramic sea image

[0122] The SeamCarving algorithm is a method for image scaling and cropping, which realizes image scaling by searching for the lowest energy line and continuously deleting the lowest energy line in the image. However, in the present invention, compared to the sky and the sea area, the gradient magnitude of the upper edge point of the panoramic sea antenna is relatively large, that is, the energy value is relatively large. Therefore, inspired by the principle of the SeamCarving algorithm, what the present invention needs to search is the The highest energy line of , without considering the interference, the highest energy line is the panoramic sea antenna. However, in the panoramic sea area image, in addition to the sea surface and the sky area, there are also many interference information, mainly including the imaging of equipment areas such as panoramic vision acquisition devices and shi...

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Abstract

The invention belongs to the field of panoramic visible light image processing, and specifically relates to a panoramic sea-sky line extracting method based on improved Seam Carving. The method comprises the following steps: (1) acquiring the visual salient map of a panoramic sea image; (2) extracting a salient region by use of a dynamic threshold method; (3) constructing an energy function; (4) searching the highest energy line; (5) screening fitting points on the sea-sky line; and (6) fitting a panoramic sea-sky line by use of the least square method. The method is successfully applied to panoramic sea-sky line detection by constructing a new energy function and setting the screening conditions of the points on the sea-sky line, and accurate extraction of a circular sea-sky line in a panoramic visible light image against a complex sea-sky background under different sea conditions and weather conditions is realized.

Description

technical field [0001] The invention belongs to the field of panoramic visible light image processing, and in particular relates to a panoramic sea antenna extraction method based on improved SeamCarving. Background technique [0002] my country has a long coastline and a vast ocean territory, and the tasks of maritime rights protection and law enforcement and maritime search and rescue are heavy. It is of great significance to vigorously develop advanced sea area monitoring equipment and study sea target detection methods. Different from the small field of view of the conventional vision system, the catadioptric panoramic vision system can acquire images of the scene in the range of 360° in the horizontal direction and more than 180° in the vertical direction at one time, without the need for a follow-up system or the installation of multiple video surveillance cameras. The information around the monitoring site can be seen in a panoramic view, which meets the needs of larg...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T2207/30184
Inventor 苏丽庞迪夏桂华朱齐丹蔡成涛吴俊杰燕妹项前李恩泽
Owner HARBIN ENG UNIV
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