Test question extraction and output equipment

Abstract

The utility model provides test question extraction and output equipment, which relates to the technical field of test question extraction and output and comprises a test question extraction and output device with a test question extraction component and a test question output component. The test question extraction output apparatus also includes a fixed focus assist member attached to the test question extraction output device. The focus fixing auxiliary member is provided with a content extraction part. The focus fixing auxiliary component is suitable for supporting the test question extraction output device at a preset position. The content extraction section is adapted to define a content extraction area on a printing medium. The test question extraction component is used for extracting at least part of content in the content extraction area. And the test question output component is used for outputting the extracted content to a specified medium. The test question extracting and outputting device is provided with an image defining part. At least part of the image defining part is arranged on the side, facing the content extraction area, of the test question extraction assembly and used for defining the extraction range of the test question extraction assembly. The device can clearly output the extracted test questions.

Description

Technical Field

[0001] The utility model relates to the technical field of question extraction and output, and particularly to a question extraction and output device. Background Art

[0002] With the development of educational technology, as an auxiliary learning tool, the wrong-question printer has gradually entered the learning life of students. The basic function of the wrong-question printer is to convert the questions into a printable form by photographing the questions, so that students can organize and paste the wrong questions in the wrong-question notebook for review and correction. This technology has played a positive role in improving learning efficiency and personalized learning.

[0003] However, in the process of using the wrong-question printer, users face some challenges. First, when taking pictures with the existing wrong-question printers, blurred images are often taken, resulting in the printed questions being unreadable and requiring multiple prints until a clear picture is taken and printed. Second, due to the differences in the photography skills of each person, the quality of the wrong-question images obtained by shooting varies. This difference directly affects the quality of the printed wrong questions, and problems such as skewed pictures and inconsistent content sizes may occur, thus affecting the learning effect and the neatness of the wrong-question notebook.

[0004] In view of this, the applicant has specifically proposed this application after studying the existing technologies. Summary of the Utility Model

[0005] The utility model provides a question extraction and output device, aiming to improve at least one of the above technical problems.

[0006] To solve the above technical problems, the utility model provides a question extraction and output device, which includes a question extraction and output device having a question extraction component and a question output component. The question extraction and output device further includes a fixed-focus auxiliary member attached to the question extraction and output device. The fixed-focus auxiliary member is provided with a content extraction part. The fixed-focus auxiliary member is adapted to support the question extraction and output device at a preset position. The content extraction part is adapted to define a content extraction area on the printing medium. The question extraction component is used to extract at least part of the content in the content extraction area. The question output component is used to output the extracted content to a specified medium. The question extraction and output device is provided with an image definition part. At least part of the image definition part is arranged on the side of the question extraction component facing the content extraction area to define the extraction range of the question extraction component.

[0007] In an optional embodiment, the extraction range is configured to be a range not exceeding 2 cm from the outer boundary of the extraction part. Preferably, the extraction range is configured to not exceed the outer boundary of the content extraction part to include the content extraction area.

[0008] In an alternative embodiment, the image defining portion is configured as a light incident path. The cross-sectional shape of at least a part of the light incident path is similar to the contour shape of the image defining portion or the content extraction region.

[0009] In an alternative embodiment, the content extraction region is configured as a rectangular region. The light incident path is configured as a frustum of a pyramid structure or a prism structure.

[0010] In an alternative embodiment, the content extraction portion is configured as a "[" shaped structure or a rectangular structure, and a chamfer is provided on a side close to the content extraction region.

[0011] In an alternative embodiment, the test question extraction component is located at the center line of the content extraction region. The distance between the test question extraction component and the content extraction region is 80 mm to 160 mm. The length of the content extraction region is 210 mm to 160 mm, and the width is 40 mm to 80 mm.

[0012] In an alternative embodiment, the test question extraction component is provided with a fixed clear imaging object distance range. The preset position is configured to enable the fixed clear imaging object distance range of the test question extraction component to cover the content extraction region. Preferably, the test question extraction component is configured as a fixed-focus photographing module.

[0013] In an alternative embodiment, the test question extraction output device is configured to only output the content in the extracted content with a gray level lower than a preset value, or is configured to output after eliminating the content with a gray level higher than the preset value by increasing the brightness of the extracted content. Preferably, both the image defining portion and the content extraction portion are white.

[0014] By adopting the above technical solutions, the following technical effects can be achieved by the present utility model:

[0015] A test question extraction output device according to an embodiment of the present utility model visually defines the content to be extracted on a test paper through a content extraction portion; through a fixed-focus auxiliary member, the test question extraction output device is fixed at a preset position, avoiding the blurring of the image caused by the shaking during hand-held shooting and failure to focus. The extraction range is defined through an image defining portion, avoiding the extraction of other unwanted regions, improving the accuracy of the extracted content, and thus improving the quality of the subsequent output content.

[0016] A test question extraction output device according to an embodiment of the present utility model adopts a fixed-focus lens, and during use, the position of the test question extraction output device is fixed through a fixed-focus auxiliary member, avoiding the blurring of the extracted content caused by shooting during the focusing process, so that the same clear content extraction effect can be obtained no matter who uses it.

[0017] In addition, during the process of outputting the extracted content, the data of the highlighted part of the extracted content is discarded by a test question extraction and output device according to an embodiment of the present utility model, and only a small amount of computing power is used to remove the shadow in the image, making the output content cleaner. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the specific embodiments of the present utility model, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 is an axonometric view of a test question extraction and output device.

[0020] Figure 2 is an exploded view of a test question extraction and output device.

[0021] Figure 3 is an axonometric view of a test question extraction and output device.

[0022] Figure 4 is a half-sectional view in the front view direction of a test question extraction and output device.

[0023] Figure 5 is a half-sectional view in the side view direction of a test question extraction and output device.

[0024] Figure 6 is a top view (with a specified medium) of a test question extraction and output device.

[0025] Reference numerals in the drawings: 1 - test question extraction and output component, 2 - test question output component, 3 - fixed-focus auxiliary component, 4 - content extraction part, 5 - content extraction area, 6 - chamfer, 7 - test question extraction component, 8 - image definition part, 9 - center line, 10 - specified medium, 11 - medium substrate. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As shown by Figures 1 to 5 the embodiments of the present utility model provide a test question extraction and output device, which includes a test question extraction and output device having a test question extraction component 7 and a test question output component 2. The test question extraction and output device further includes a focusing auxiliary member 3 attached to the test question extraction and output device. The focusing auxiliary member 3 is adapted to support the test question extraction and output device at a preset position. The focusing auxiliary member 3 is provided with a content extraction portion 4. The content extraction portion 4 is adapted to define a content extraction area 5 on a printed medium.

[0028] The test question extraction component 7 is used to extract at least part of the content in the content extraction area 5. The test question output component 2 is used to output the extracted content to a specified medium 10. The test question extraction and output device is provided with an image definition portion 8. At least part of the image definition portion 8 is disposed on the side of the test question extraction component 7 facing the content extraction area 5 to define the extraction range of the test question extraction component 7.

[0029] It should be noted that although existing wrong-question printers usually come with some image processing functions, such as automatic cropping, rotation correction, etc., in order to improve the printing quality. After the user takes a photo of a wrong question, these functions can be used to perform preliminary processing on the image to reduce problems caused by improper shooting angles or techniques.

[0030] However, existing wrong-question printers still have relatively high requirements for the user's shooting techniques, and the user needs to master certain skills to print wrong questions with better effects. Secondly, when the user uses these functions, multiple adjustments are required, which not only increases the operation complexity but also consumes additional time. In addition, these functions require a large amount of computing power support and need a better processor, which greatly increases the cost.

[0031] An examination question extraction and output device according to an embodiment of the present utility model visually defines the content to be extracted on a test paper through a content extraction unit 4, facilitating the user to visually see the framed content. The extraction range is defined by an image definition unit 8, avoiding the extraction of other unwanted areas, improving the accuracy of the extracted content, making the extracted content cleaner and tidier, and thus improving the quality of the subsequent output content.

[0032] In addition, by fixing the examination question extraction and output device through a fixed-focus auxiliary member 3, it can ensure that the distance between the examination question extraction component 7 and the object to be photographed is the same each time. This can not only effectively avoid the blurring of the picture caused by shaking and out-of-focus during hand-held shooting, but also enable the same scaling ratio for each printing, avoiding the situation where the font sizes of the wrong questions printed are inconsistent and improving the printing effect.

[0033] In addition, when the width of the question to be extracted is greater than the width of the content extraction area 5, different parts of the wrong question can be extracted and printed separately by adjusting the position of the content extraction unit 4, and then the printed specified medium 10 can be spliced together to form a complete question. Since the relative positions of the examination question extraction and output device and the content extraction unit 4 are fixed, the scaling ratio of the content printed each time is the same, and the font sizes printed are the same, so they can be spliced together well without misalignment, which has good practical significance.

[0034] As Figure 3 described, on the basis of the above embodiment, in an optional embodiment of the present utility model, the image definition unit 8 is configured as a light incident path. At least part of the cross-sectional shape of the light incident path is similar to the contour shape of the image definition unit 8 or the content extraction area 5. Preferably, the content extraction area 5 is configured as a rectangular area. The content extraction unit 4 is configured as a "["-shaped structure or a rectangular structure, and a chamfer 6 is provided on the side close to the content extraction area 5. The light incident path is configured as a frustum of a pyramid structure or a prism structure.

[0035] In this embodiment, the examination question extraction component 7 is installed on the upper bottom surface of the frustum of a pyramid. In other embodiments, the structure of the image definition unit 8 can be set as a prism structure, and the present utility model does not make specific limitations on this. Through the image definition unit 8, not only can the lens be protected from being bumped, but also the lens can be prevented from photographing sundries, thereby reducing the computational amount of subsequent image processing.

[0036] Preferably, the four corners of the content extraction part 4 are provided with rounded corners. On the side facing the content extraction part 4, a chamfer 6 or rounded corners are provided. By chamfering the content extraction part 4, the thickness of the frame on one side of the content extraction part 4 is reduced, so that the content inside the content extraction part 4 can be better seen during use. At the same time, the chamfer 6 can reduce the height of the vertical surface along the periphery of the content extraction area 5, avoiding the generation of dark parts at the vertical surface due to the light angle during content extraction, and reducing the shadow caused by the side wall at the same time.

[0037] In other embodiments, the structure of the content extraction part 4 can be set as a thin plate structure, so as to further reduce the shadow and increase the field of view. When the content extraction part 4 is constructed as a "[[" (C) - shaped structure, marks can be made on two parallel boundaries, or the end of the boundary can be used as a mark to indicate the boundary of the content extraction area 5.

[0038] Based on the above - mentioned embodiments, in an optional embodiment of the present utility model, the test question extraction component is provided with a fixed clear imaging object distance range. The preset position is configured to enable the fixed clear imaging object distance range of the test question extraction component 7 to cover the content extraction area 5. Preferably, the test question extraction component 7 is constructed as a fixed - focus photographing module.

[0039] It should be noted that the fixed clear imaging object distance range means that the range within which the test question extraction component can clearly image is fixed. Specifically, the test question extraction component is a camera module with a fixed focal length and a fixed aperture, and within the range between the first plane at the first distance and the second plane at the second distance in the shooting direction, it can be clearly photographed. Among them, the first distance is the minimum object distance at which clear imaging can be achieved (i.e., the minimum focusing distance), and the second distance is the maximum object distance at which imaging can be achieved (i.e., the maximum focusing distance). It can be understood that the range between the first plane and the second plane is the clear imaging object distance range in the embodiment of the present utility model.

[0040] Specifically, through the fixed - focus photographing module, there is no need to focus when extracting content. Just place the fixed - focus auxiliary member 3 on the printed medium, and the printed medium can be placed within the clear imaging object distance range, achieving the effect of being ready to use immediately, and completely avoiding the problem of blurry photos. At the same time, the extracted content is adjusted through the content extraction area 5, which is simple and convenient.

[0041] Such as Figure 1 、 2, as shown in FIGS. 4 and 5, based on the above embodiments, in an optional embodiment of the present invention, the test question extraction component 7 is located on the center line 9 of the content extraction area 5. The distance between the test question extraction component 7 and the content extraction area 5 is 80 mm to 160 mm. The length of the content extraction area 5 is 210 mm to 160 mm, and the width is 40 mm to 80 mm. Preferably, the distance between the bottom of the test question extraction component 7 and the content extraction part 4 is 110 mm to 130 mm. The length of the content extraction part 4 is 160 mm to 180 mm. The width of the content extraction part 4 is 50 mm to 70 mm.

[0042] Specifically, the test question content is usually printed in the paper area of A4 size, and there are margins on both sides of the test paper. Through a large number of measurement data, the inventor has obtained that a length of 160 mm to 180 mm can cover the test question lengths of all test papers. A width of 50 mm to 70 mm can cover the heights of more than 90% of the questions, so that more than 90% of the questions can be photographed and printed at one time, greatly improving the practicability of the wrong question photographing and printing device. For the remaining 10% of the questions, they are photographed and printed in sub-areas, and then the printed specified media 10 are spliced together for photographing and printing, so as to realize the photographing and printing of all questions.

[0043] Setting the test question extraction component 7 on the center line 9 of the content extraction area 5 can place the content extraction area 5 at the best extraction position of the test question extraction component 7 and ensure the shooting quality. In other embodiments, the test question extraction component 7 can be set at a position outside the center line 9, or the test question extraction component 7 can be set obliquely, and then the captured image is corrected by a correction algorithm. The embodiments of the present invention do not make specific limitations on this.

[0044] Specifically, existing wrong question photographing and printers use zoom lenses to adapt to different shooting distances. When the distance between the camera and the test paper is too large, the printed content will be too small, resulting in too small a proportion of the wrong questions photographed and printed, and the words are not clear.

[0045] In the embodiments of the present invention, the test question extraction output device is fixed by the fixed-focus auxiliary component 3, so that the relative position between the test question extraction output device and the test paper will not change, and the shooting distance and position are the same each time, which can effectively prevent the shooting errors caused by different shooting skills of different shooters, enabling different people to print wrong questions with the same effect and well ensuring the photographing and printing effect of wrong questions. In addition, setting the content extraction part 4 on the content extraction part 4 can effectively prevent the deformation of the photo content caused by the bending and deformation of the test paper.

[0046] Based on the above embodiments, in an alternative embodiment of the present utility model, a planar portion for pressing the printing medium is provided on the bottom surface of the content extraction portion 4. Specifically, the periphery of the planar portion is disposed at the bottom of the content extraction portion 4.

[0047] Preferably, a positioning protrusion is provided at the bottom of the content extraction portion 4. The positioning protrusion is configured to be able to form an indentation on the test paper as a position mark of the content extraction portion 4. The positioning protrusion can be a strip-shaped positioning protrusion or a dot-shaped positioning protrusion. The present utility model does not limit this, as long as it can leave a mark on the test paper by pressing down to mark the position of the content extraction portion 4.

[0048] As Figure 6 shown, based on the above embodiments, in an alternative embodiment of the present utility model, the test question output component 2 is configured to be able to output the extracted content to the specified medium 10. Among them, the width of the specified medium 10 is not greater than the width of the content extraction area 5. Preferably, the specified medium 10 is attached to the medium substrate 11. The width of the medium substrate 11 is greater than the width of the specified medium 10.

[0049] Specifically, the specified medium 10 is a thermal printing paper with adhesive. In the prior art, when two specified media 10 are placed together, a relatively wide white edge will appear in the middle, affecting the reading experience. In the embodiment of the present utility model, the width of the specified medium 10 is set to be smaller than that of the medium substrate 11, which can effectively eliminate this white edge and greatly improve the reading experience.

[0050] In an alternative embodiment, the width of the medium substrate 11 is 55 to 67 mm, and the width of the specified medium 10 is 50 to 54 mm. Preferably, the width of the medium substrate 11 is 56 mm; the width of the specified medium 10 is 52 mm. Specifically, the specified medium 10 is narrower than the medium substrate 11, eliminating the white edge of the wrong question printing. After printing in batches, the wrong question contents photographed and printed at different times can be spliced together without gaps / white edges to form a complete wrong question, without forming an abrupt white edge in the middle of the question, which has good practical significance.

[0051] Based on the above embodiments, in an alternative embodiment of the present utility model, the size of the content output by the test question output component 2 is 80% to 100% of the actual size of the photographed object. As Figure 6 shown, in this embodiment, the length of the output port of the specified medium 10 of the test question extraction and output device is not greater than the width of the content extraction area 5.

[0052] Preferably, the length of the outlet of the designated medium 10 is set to be the same as the width of the content extraction part 4, deducting the part where the printing outlet is wider than the medium substrate 11 and the part where the medium substrate 11 is wider than the designated medium 10. The printed picture ratio is about 95% of the object being photographed. In other embodiments, the printing ratio can be set to any ratio between 85% and 100%. On the basis of ensuring that the font can be clearly seen, the wrong questions printed can be scaled to fit the width of the wrong question notebook by scaling, so that they can be directly pasted on the wrong question notebook. Among them, the commonly used wrong question notebooks are B5 or A5 in size.

[0053] As Figure 4 and Figure 5 shown, on the basis of the above embodiment, in an alternative embodiment of the present invention, the extraction range is configured to be within a range not exceeding 2 cm from the outer boundary of the extraction part. Preferably, the extraction range is configured to not exceed the outer boundary of the content extraction part 4 to include the content extraction area 5.

[0054] Specifically, when the extracted content exceeds the content extraction part 4, unwanted pictures outside the content extraction area 5 may be photographed, and this part of the content needs to be cropped during the subsequent output process, which requires a chip with higher computing power. When the extracted content does not exceed the content extraction part 4, unwanted pictures will not be photographed, and the extracted content can be directly output on the designated medium 10, greatly saving the computing power of the chip and reducing costs.

[0055] On the basis of the above embodiment, in an alternative embodiment of the present invention, the test question extraction and output device is configured to only output the content in the extracted content with a gray level lower than a preset value, or is configured to output after eliminating the content with a gray level higher than the preset value by increasing the brightness of the extracted content. Preferably, both the image definition part 8 and the content extraction part 4 are white.

[0056] Specifically, the embodiment of the present invention eliminates the light gray content in the picture by removing the highlight part of the image, making the output content cleaner and tidier. And it avoids the step of cropping the photographed image, not only saving a large amount of computing power and reducing the chip cost, but also improving the speed of taking pictures and printing, with good practical effects.

[0057] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An examination question extraction and output device, comprising an examination question extraction and output apparatus having an examination question extraction component (7) and an examination question output component (2); characterized in that, It further includes a fixed-focus auxiliary member (3) attached to the test question extraction and output device; the fixed-focus auxiliary member (3) is provided with a content extraction part (4); The fixed-focus auxiliary member (3) is adapted to support the test question extraction and output device at a preset position; The content extraction part (4) is adapted to define a content extraction area (5) on the printed medium; the test question extraction component (7) is used to extract at least part of the content in the content extraction area (5); the test question output component (2) is used to output the extracted content to a specified medium (10); The test question extraction and output device is provided with an image definition part (8); at least part of the image definition part (8) is arranged on the side of the test question extraction component (7) facing the content extraction area (5) to define the extraction range of the test question extraction component (7).

2. The test question extraction and output device according to claim 1, characterized in that, The extraction range is configured to be within a range not exceeding 2 cm from the outer boundary of the extraction part.

3. The test question extraction and output device according to claim 2, characterized in that The extraction range is configured to not exceed the outer boundary of the content extraction part (4) to include the content extraction area (5).

4. The test question extraction and output device according to claim 1, characterized in that, The image definition part (8) is configured as a light incident path; the cross-sectional shape of at least part of the light incident path is similar to the contour shape of the image definition part (8) or the content extraction area (5).

5. An examination question extraction and output device according to claim 4, characterized in that, The content extraction area (5) is configured as a rectangular area; The light incident path is configured as a frustum of a pyramid structure or a prism structure.

6. The test question extraction and output device according to claim 5, wherein The content extraction part (4) is configured as a "["-shaped structure or a rectangular structure, and a chamfer (6) is provided on the side close to the content extraction area (5).

7. An examination question extraction and output device according to claim 1, characterized in that, The test question extraction component (7) is located on the center line (9) of the content extraction area (5); the distance between the test question extraction component (7) and the content extraction area (5) is 80 mm to 160 mm; The length of the content extraction area (5) is 210 mm to 160 mm, and the width is 40 mm to 80 mm.

8. A test question extraction and output device according to any one of claims 1 to 7, characterized in that, The test question extraction component (7) is provided with a fixed clear imaging object distance range; The preset position is configured such that the fixed clear imaging object distance range of the test question extraction component (7) covers the content extraction area (5).

9. An examination question extraction and output device according to claim 8, characterized in that, The test question extraction component (7) is configured as a fixed-focus photographing module.

10. An examination question extraction and output device according to any one of claims 1 to 7, characterized in that, The test question extraction and output device is configured to only output the content with a gray level lower than a preset value in the extracted content, or to output the content after eliminating the content with a gray level higher than the preset value by increasing the brightness of the extracted content.

11. An examination question extraction and output device according to claim 10, characterized in that, Both the image definition part (8) and the content extraction part (4) are white.

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