Calculation method, system and application of standard man-hours for map sheet land type processing in aerial survey office

Abstract

The invention discloses a method for calculating the man-hours of standard land type processing applied in the field of aerial surveying industry map processing, including: 1. Constructing a sample set, the sample set includes S sample map frames, and each sample map frame has At least two land types; count the processing man-hours T of each sample map s and the area of ​​each land type in the sample map; the area of ​​the cth land type in the sth sample map is a sc ;s=1,2,...,S, c=1,2,...,C; C is the total number of land types, S>C; 2. Establish a linear model between processing hours and land type area: A est W est =T est ; where A est is the matrix formed by the area of ​​each land type in the map, W est A vector composed of standard man-hours for each land type, T est 3. Use RANSAC algorithm to calculate model parameter W est , to get the standard working hours of each land type. This method can calculate the standard man-hours based on the man-hour data recorded in the actual production, and then estimate the man-hours for processing the map frame, avoiding the influence of the operator's high or low efficiency on the calculation of the standard man-hours of the land type.

Description

technical field [0001] The invention belongs to the field of aerial surveying and mapping interior processing, and particularly relates to a method for calculating standard working hours for map-sheet and ground type processing, and an application of the method in working-hour estimation. Background technique [0002] In the internal production of aerial surveying and mapping, the large-area survey area is generally divided into multiple map sheets, and the operator processes the map sheets. Standard man-hours are the time required to process a unit area map, and are an important basis for map processing time estimation and job planning. Under the condition that the data processed in the office, the type of products and the efficiency of operators are all determined, the most important factor that affects the standard working hours of frame processing is the distribution of land types within the frame. Different land types have different processing difficulties, which often...

AI Technical Summary

Problems solved by technology

Although this method is simple and easy to implement, there is a big problem that it is easy to underestimate the standard working hours of land types

The reasons include: during the special evaluation, the data is usually pre-equipped, the switching between the processes is tight, and the work efficiency of the operators is always at a high level, that is, the special evaluation is an ideal working state, and the actual operation is often unable to achieve the special High-level operating conditions and operating efficiency during the evaluation, and the special evaluation cannot reflect the normal state of the map operation

In addition, the number of maps used for special evaluation is small, which cannot fully represent the overall processing difficulty of this land type

The above factors cause the actual working hours to be longer than the standard working hours

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