阅读说明：本技术 一种基于图像识别的填空题自动阅卷方法 (Automatic marking method for blank filling questions based on image recognition ) 是由 张元平 于 2019-08-06 设计创作，主要内容包括：本发明提出的种基于图像识别的填空题自动阅卷方法,包括：获取答题卡图像,并根据预设的答案书写位置划分与各答案对应的答题区域；对各答题区域进行图像识别,获取文字信息；通过对比文字信息与对应的答案进行自动阅卷。本发明提出的一种基于图像识别的填空题自动阅卷方法,以单个的答题区域作为图像识别对象,减小了单次图像识别的对象信息体积,提高了识别效率,并且相对于答题卡整体图像识别,降低了信息串扰的可能,从而提高了获取的文字信息的准确率,即提高了填空题识别的准确率。(The invention provides an automatic marking method of a blank filling question based on image recognition, which comprises the following steps: acquiring an answer sheet image, and dividing answer areas corresponding to all answers according to preset answer writing positions; carrying out image recognition on each question answering area to obtain character information; and automatically scoring by comparing the text information with the corresponding answer. According to the automatic marking method for the blank filling questions based on the image recognition, the single answer area is used as the image recognition object, the object information volume of single image recognition is reduced, the recognition efficiency is improved, and the possibility of information crosstalk is reduced relative to the whole image recognition of the answer sheet, so that the accuracy of the obtained character information is improved, namely the accuracy of the blank filling question recognition is improved.)

1. An automatic marking method for a blank filling question based on image recognition is characterized by comprising the following steps:

acquiring an answer sheet image, and dividing answer areas corresponding to all answers according to preset answer writing positions;

Carrying out image recognition on each question answering area to obtain character information;

And automatically scoring by comparing the text information with the corresponding answer.

2. The method for automatically scoring the blank filling questions based on the image recognition as claimed in claim 1, wherein the answer sheet image is obtained by scanning.

3. The automatic marking method of the gap filling question based on the image recognition as claimed in claim 1, characterized by comprising the following steps:

Acquiring an image of the answer sheet;

Dividing answer areas corresponding to all answers on the answer sheet image according to preset answer writing positions, and marking all the answer areas according to the question numbers;

carrying out image identification on each answer area on the answer sheet image to obtain character information, and associating the character information with a label corresponding to the answer area;

And comparing the text information with the corresponding answers according to the labels, and counting the right and wrong conditions.

4. The automatic marking method for the blank filling question based on the image recognition as claimed in claim 3, characterized in that, it further comprises: obtaining answers corresponding to all answer areas, and marking each answer according to the question number; the specific way of comparing the text information with the corresponding answer according to the label is as follows: and acquiring character information with consistent labels and comparing the character information with the answers.

5. the method as claimed in claim 3, wherein the text information of each answer area is obtained by image recognition, and then compared with the corresponding answer one by one.

6. the method as claimed in claim 3, wherein the answer areas are traversed, the misjudgment is performed for each answer area one by one, and then the statistics is performed for each answer area.

Technical Field

the invention relates to the technical field of automatic marking, in particular to a blank filling question automatic marking method based on image recognition.

Background

with the development of electronic information, more and more work has been replaced by computers, for example, automatic scoring has gradually replaced manual scoring.

the existing automatic scoring system is more specific to the choice questions. For gap filling questions and the like, the marking effect of the existing automatic marking system is not ideal, and answers cannot be identified or are identified wrongly due to writing positions, writing habits and the like.

disclosure of Invention

based on the technical problems in the background art, the invention provides an automatic marking method for a blank filling question based on image recognition.

The invention provides an automatic marking method of a blank filling question based on image recognition, which comprises the following steps:

Acquiring an answer sheet image, and dividing answer areas corresponding to all answers according to preset answer writing positions;

carrying out image recognition on each question answering area to obtain character information;

And automatically scoring by comparing the text information with the corresponding answer.

preferably, the image of the answer sheet is obtained by scanning.

preferably, the method specifically comprises the following steps:

Acquiring an image of the answer sheet;

Dividing answer areas corresponding to all answers on the answer sheet image according to preset answer writing positions, and marking all the answer areas according to the question numbers;

Carrying out image identification on each answer area on the answer sheet image to obtain character information, and associating the character information with a label corresponding to the answer area;

and comparing the text information with the corresponding answers according to the labels, and counting the right and wrong conditions.

Preferably, the method further comprises the following steps: obtaining answers corresponding to all answer areas, and marking each answer according to the question number; the specific way of comparing the text information with the corresponding answer according to the label is as follows: and acquiring character information with consistent labels and comparing the character information with the answers.

preferably, after the text information of each answer area is acquired through image recognition, the text information of each answer area is compared with the corresponding answer one by one.

preferably, each answer area is traversed, the wrong judgment is carried out on each answer area one by one, and then statistics is carried out on each answer area.

According to the automatic marking method for the blank filling questions based on the image recognition, the single answer area is used as the image recognition object, the object information volume of single image recognition is reduced, the recognition efficiency is improved, and the possibility of information crosstalk is reduced relative to the whole image recognition of the answer sheet, so that the accuracy of the obtained character information is improved, namely the accuracy of the blank filling question recognition is improved.

in the invention, after the character information is identified, the answer area is still taken as a unit, and whether the answer in a single answer area is correct or not is judged by comparing the character information with the corresponding answer, so that the automatic marking of the whole blank filling question is completed. Therefore, the answer judgment of the single answer area is beneficial to ensuring the efficiency and the accuracy of obtaining the answers corresponding to the answer areas, thereby improving the accuracy of automatic marking.

Drawings

FIG. 1 is a flowchart of an automatic marking method for a gap filling question based on image recognition according to the present invention;

Fig. 2 is a flowchart of another automatic marking method for a gap filling question based on image recognition according to the present invention.

Detailed Description

Referring to fig. 1, the method for automatically scoring a blank filling question based on image recognition provided by the invention comprises the following steps:

And acquiring an answer sheet image, and dividing answer areas corresponding to the answers according to preset answer writing positions.

And carrying out image recognition on each answering area to obtain character information.

and automatically scoring by comparing the text information with the corresponding answer.

In this way, in the embodiment, a single answer area is used as an image recognition object, so that the object information volume of single image recognition is reduced, the recognition efficiency is improved, and compared with the whole image recognition of an answer sheet, the possibility of information crosstalk is reduced, so that the accuracy of the acquired character information is improved, namely the accuracy of the blank filling recognition is improved.

In this embodiment, after the text information is recognized, the answer area is still used as a unit, and whether the answer in a single answer area is correct or not is determined by comparing the text information with the corresponding answer, so that the automatic marking of the whole blank filling question is completed. Therefore, the answer judgment of the single answer area is beneficial to ensuring the efficiency and the accuracy of obtaining the answers corresponding to the answer areas, thereby improving the accuracy of automatic marking.

Referring to fig. 2, the method for automatically scoring a question filling based on image recognition according to the present embodiment specifically includes the following steps:

Acquiring an image of the answer sheet;

dividing answer areas corresponding to all answers on the answer sheet image according to preset answer writing positions, and marking all the answer areas according to the question numbers;

Carrying out image identification on each answer area on the answer sheet image to obtain character information, and associating the character information with a label corresponding to the answer area;

And comparing the text information with the corresponding answers according to the labels, and counting the right and wrong conditions.

Specifically, in this embodiment, the answer sheet image is obtained by scanning. Therefore, the consistency of all the acquired answer sheet images is guaranteed, the answer sheet images are conveniently divided in a unified mode, the accuracy of dividing the answer area is improved, and the dividing efficiency is improved.

The method for automatically scoring a question based on image recognition in the embodiment further comprises the following steps: obtaining answers corresponding to all answer areas, and marking each answer according to the question number; the specific way of comparing the text information with the corresponding answer according to the label is as follows: and acquiring character information with consistent labels and comparing the character information with the answers.

Therefore, in the embodiment, the answers are labeled in advance, and the corresponding relation between the text information and the answers is obtained through the labels, so that the method is efficient and accurate.

In this embodiment, after the text information of each answer area is acquired through image recognition, the text information of each answer area is compared with the corresponding answer one by one. In this way, in the present embodiment, the text information in each answering area is identified first, and then the text information corresponding to each text area is determined one by comparing the answers. Therefore, the automatic scoring efficiency can be improved by dividing the labor force from front to back.