Method for automatically identifying waterline scale

An automatic recognition and scale technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as high age, difficulty in waterline and scale recognition, peeling off of ship sides and scale characters, etc., to reduce uncertainty Sexuality, the effect of normative identification work

Inactive Publication Date: 2015-11-11
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the high age of some bulk carriers at present, the coating of the sides and scales have b

Method used

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  • Method for automatically identifying waterline scale
  • Method for automatically identifying waterline scale

Examples

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Example Embodiment

[0032] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, not to limit the scope of the present invention.

[0033] The embodiment of the present invention provides an automatic identification method for waterline scale, such as figure 1 As shown, the methods shown include:

[0034] 101. Obtain a standard sample image according to the photographed ship water gauge image.

[0035] The step 101 can be specifically implemented in the embodiment of the present invention as intercepting all non-repetitive numbers contained in the photographed ship water gauge image, such as 2, 4, 6, 8, **M (meter)..., interception The standard is to adjust the level of the digital position, while ensuring that the upper, lower, left, and right edges of the interception are close to the edges of the numbers; the intercepted image is binarized, such as the digital color i...

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Abstract

The invention relates to a method for automatically identifying a waterline scale. The method includes obtaining standard sample images based on shot ship staff gauge images, identifying the water surface boundary from the standard sample images, obtaining staff gauge number images above the water surface boundary and containing staff gauge numbers, obtaining a target images through the images of each staff gauge number within four edges according to the staff gauge number images, zooming in the target images to the size of a template sample image, and calculating the matched evaluating value of each target image with the template sample image, wherein the template sample image corresponding to the maximal image matching assessment value is identified as the waterline scale. The waterline scale can be automatically and accurately identified when the staff gauge scale is not clear.

Description

technical field [0001] The invention relates to the technical field of water gauge measurement, in particular to an automatic waterline scale identification method. Background technique [0002] In recent years, with the continuous development of coastline resources in coastal cities and the increasing dependence of domestic resource-based bulk bulk cargo on foreign countries, the import volume of bulk cargo has risen sharply. The water gauge weight is used as a measurement method for the weight of bulk bulk cargo. Its role is becoming more and more prominent. However, the most critical factor affecting the accuracy of measurement in water gauge weighing is undoubtedly the reading of the draft value on the six sides of the ship. Traditionally, the waterline is viewed by renting a working boat or a small boat to make it close to the waterline outside the ship's beam. Take another reading. This method not only has poor timeliness and high cost, but also the personal safety o...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V20/20
Inventor 李博沈益骏王琦
Owner ZHEJIANG OCEAN UNIV
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