求翻译：论文首先通过对各种图形比较方法的优势和缺点进行分析比较，并结合本设计题目的自身特点，确定了采用对图形的像素对比，提取作答答案和标准答案的同一坐标像素，同时通过将提取出来的像素值进行数值比较，从而得出作答答案与标准答案的异同。是什么意思？

Firstly analyze and compare the advantages and disadvantages by comparison of a variety of graphics, combined with the characteristics of the subject of this design to determine the same coordinate pixel graphics pixel comparison, extract answer answers and the standard answer, while the extracted p

First of all, through papers on a variety of graphical comparison of advantages and disadvantages with comparative analysis, and in conjunction with the design of their own characteristics, to determine the use of a pixel graphic comparison, extracts the answer and reply with a standard answer of th

The paper first through carries on the analysis comparison to each kind of graph comparison method superiority and the shortcoming, and unifies this design topic own characteristic, had determined uses to the graph picture element contrast, the extraction does answers the answer and the standard ans

Paper first to analyze the advantages and disadvantages of the various graphics methods, combined with the features of this design topic, determine the pixel of the graphic comparisons, extract the answer the answer and answer of the same pixel coordinates, at the same time by the extracted pixel va

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