CN114216656A - Camera blurring effect performance test card, system and preparation method - Google Patents
Camera blurring effect performance test card, system and preparation method Download PDFInfo
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- CN114216656A CN114216656A CN202111522623.1A CN202111522623A CN114216656A CN 114216656 A CN114216656 A CN 114216656A CN 202111522623 A CN202111522623 A CN 202111522623A CN 114216656 A CN114216656 A CN 114216656A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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Abstract
The application discloses camera virtualization effect performance test card relates to camera performance test field. This camera virtualisation effect capability test card includes: testing the subject; the test object comprises a contour characteristic part and a texture characteristic part; and the texture characteristic part is arranged along the contour direction of the contour characteristic part. The embodiment of the application objectively tests the blurring effect performance when the camera shoots the picture by simulating the scene that the blurring effect of the picture shot by the camera is abnormal in reality.
Description
Technical Field
The application relates to the field of camera performance testing, in particular to a camera blurring effect performance testing card, a system and a preparation method.
Background
The camera of the mobile phone is limited by the size, technology, materials and the like, and cannot obtain a strong optical background blurring effect after using an optical lens like a digital camera or a single lens reflex. Therefore, in the photo app of the smart phone, a simulated light effect blurring algorithm is almost integrated, and people use the algorithm to simulate an effect similar to optical blurring when shooting by a camera of the smart phone. The blurring effect can be utilized to blur the background when the mobile phone camera shoots the subject of the character, so that the character effect is highlighted. After the development is completed, the algorithm needs to be installed in a mobile phone app for testing to obtain an actual measurement effect, most of testers install the app with the blurring algorithm in advance in the mobile phone, image acquisition is performed on the real scene based on the mobile phone, and performance analysis is performed on the blurring effect according to the shot image effect. However, because the test process has too many uncertain factors, the shot object may change at any time, so that the effect of each shot may be different, and it is difficult to analyze the performance of the blurring effect objectively.
Disclosure of Invention
The embodiment of the application provides a camera blurring effect performance test card, which is used for objectively testing blurring effect performance when a camera shoots pictures by simulating a scene with abnormal blurring effect of pictures shot by the camera possibly appearing in reality.
An aspect of the embodiment of the present application provides a camera virtualization effect performance test card, which is characterized by comprising: testing the subject; the test object comprises a contour characteristic part and a texture characteristic part; and the texture characteristic part is arranged along the contour direction of the contour characteristic part.
In some embodiments, the profile features comprise one or more of a sawtooth shape, a wave shape, a sharp shape, a rounded shape, a curved shape.
In some embodiments, the textural features comprise a plurality of cells stacked layer by layer against the contour lines of the contour features and in close proximity to each other.
In some embodiments, the plurality of unit cells are different in size and shape such that a texture formed by the plurality of unit cells is irregularly distributed.
In some embodiments, the test target further includes a color feature portion disposed on a surface layer of the texture feature portion, and is configured to test whether a blurring effect of the camera to be tested is associated with a specified color.
In some embodiments, the color feature is a gradient color layer overlying a surface of the texture feature.
In some embodiments, the camera blurring effect performance test card further includes:
and the gray frame is arranged around the test object and is positioned at the same horizontal plane with the test object.
This embodiment on the other hand provides a camera blurring effect capability test system, includes: the camera blurring effect performance test card described above; the bracket plate is arranged perpendicular to the horizontal plane and is matched with the camera blurring effect performance test card so as to be fixedly attached by the camera blurring effect performance test card; or the suspension rope is arranged at the top end of the camera blurring effect performance test card.
Another aspect of this embodiment provides a method for preparing the above-mentioned camera blurring effect performance test card, including: selecting a bottom plate for preparing the camera blurring effect performance test card; the upper surface of the bottom plate is carved with a closed contour line to form a contour characteristic part, and cells stacked layer by layer are laid along the trend of the contour characteristic part to form a texture characteristic part; printing a color with a gradient effect on the surface of the texture feature part to form a gradient color layer; and cutting along the contour line of the test object, and removing the area outside the contour line to obtain the camera blurring effect performance test card.
In some embodiments, the bottom plate is made of an Andy plate.
The camera virtualization effect performance test card, the system and the preparation method provided by the embodiment of the application comprise the following steps: testing the subject; the test object comprises a contour characteristic part and a texture characteristic part; and the texture characteristic part is arranged along the contour direction of the contour characteristic part. The embodiment of the application objectively tests the blurring effect performance when the camera shoots the picture by simulating the scene that the blurring effect of the picture shot by the camera is abnormal in reality.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of an overall structure of a camera blurring effect performance test card according to an embodiment of the present application.
Fig. 2 is a schematic diagram illustrating an effect of an algorithm anomaly in a camera blurring effect performance test card according to an embodiment of the present application.
Fig. 3 is a schematic diagram of an accurate algorithm effect in the camera blurring effect performance test card according to the embodiment of the present application.
Reference numerals: 1. testing the subject; 2. a profile feature; 3. a textural feature; 4. a grey border.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The camera of the mobile phone is limited by the size, technology, materials and the like, and cannot obtain a strong optical background blurring effect after using an optical lens like a digital camera or a single lens reflex. Therefore, in the photo app of the smart phone, a simulated light effect blurring algorithm is almost integrated, and people use the algorithm to simulate an effect similar to optical blurring when shooting by a camera of the smart phone. The blurring effect can be utilized to blur the background when the mobile phone camera shoots the subject of the character, so that the character effect is highlighted. After the development is completed, the algorithm needs to be installed in a mobile phone app for testing to obtain an actual measurement effect, most of testers install the app with the blurring algorithm in advance in the mobile phone, image acquisition is performed on the real scene based on the mobile phone, and performance analysis is performed on the blurring effect according to the shot image effect. However, because the test process has too many uncertain factors, the shot object may change at any time, so that the effect of each shot may be different, and it is difficult to analyze the performance of the blurring effect objectively. In order to solve the problems, the scheme provides the camera blurring effect performance test card, which objectively tests the blurring effect performance when the camera shoots pictures by simulating the scene with abnormal blurring effect of the pictures shot by the camera possibly appearing in reality.
Specifically, please refer to fig. 1 to 3, in which fig. 1 is a schematic diagram of an overall structure of a camera blurring effect performance test card according to an embodiment of the present application. An aspect of the present application provides a camera virtualization effect performance test card, including: testing a subject 1; the test object 1 comprises a contour characteristic part 2 and a texture characteristic part 3; and the texture features 3 are arranged along the contour direction of the contour features 2.
It should be explained that the camera of the mobile phone cannot obtain a strong optical background blurring effect after using the optical lens like a digital camera or a single lens reflex camera due to the limitations of the size, technology, material, and the like. Therefore, in the photo APP of the smart phone, a simulated light effect blurring algorithm is almost integrated, and people use the algorithm to simulate the effect similar to optical blurring when shooting by a camera of the smart phone. The blurring effect can be utilized to blur the background when the mobile phone camera shoots the subject of the character, so that the character effect is highlighted. The algorithm needs to be installed in a mobile phone APP for testing after the development is completed, an actual measurement effect is obtained, most of testers install the APP with the blurring algorithm in advance in the mobile phone, image acquisition is carried out on the real scene based on the mobile phone, and performance analysis is carried out on the blurring effect according to the shot image effect. However, because the test process has too many uncertain factors, the shot object may change at any time, so that the effect of each shot may be different, and it is difficult to analyze the performance of the blurring effect objectively.
Therefore, in order to solve the above problems, the present invention designs a camera blurring effect performance test card, which mainly simulates a scene that a camera shooting image blurring effect is abnormal (for example, mistakenly blurring a foreground image and a background image together) that may occur in reality, and objectively tests the blurring effect performance when the camera shooting image. The camera blurring effect performance test card body comprises a test object 1, a contour characteristic part 2 and a texture characteristic part 3.
The test object 1 included in the camera blurring effect performance test card mainly includes two feature portions, namely a contour feature portion 2 and a texture feature portion 3, and the texture feature portion 3 is arranged along the contour direction of the contour feature.
In order to simulate the real shooting scene more truly, the scheme specifically refers to the condition that blurring abnormity is more easily generated, and the outline characteristic part 2 is preferably in one or more of a sawtooth shape, a wave shape, a sharp shape, a surrounding shape and a curve shape. Simultaneously for the convenience of the tester to judge the camera blurring effect performance through the test card provided by the scheme, the texture characteristic part 3 is designed to be formed by a plurality of cells which are stacked layer by the contour line tightly attached to the contour line characteristic part 2 and are tightly connected with each other, when the blurring effect appears on too many cells in the picture effect shot by the camera, the performance of the blurring algorithm can be considered to be poor, as shown in fig. 2, the blurring effect appears on the image in the square frame by a plurality of cells and the contour characteristic part 2 simultaneously. Normally the cells and outline features 2 should be clearly visible as shown in figure 3.
In some embodiments, by adding the texture features 3 to the test object 1, the test card image taken by the camera to be tested can be input into a computer, which further analyzes the accuracy of the blurring algorithm. The specific process is that a gray level image of a test card image shot by a camera to be tested is processed through binarization, at the moment, a texture feature part 3 on the test card image is highlighted after being dyed with black, and the pixel quantity of the texture feature part 3 is calculated by using a Laplace operator. Meanwhile, based on the test card image shot under the normal blurring algorithm, the pixel quantity of the texture characteristic part under the normal condition is calculated, the texture pixel quantities of the two test card images are compared, the data difference can be obtained, the difference can reflect whether the image definition is reduced by the algorithm, and the accuracy of the blurring algorithm can be judged according to the reduction degree.
In some embodiments, the plurality of unit cells are different in size and shape such that a texture formed by the plurality of unit cells is irregularly distributed. By making the texture on the texture feature portion 3 irregular, it is possible to deeply simulate the texture features of the surface of the object to be photographed in reality, such as leaves.
Since the performance of the blurring algorithm is also affected by the color of the surface of the object to be photographed, but since different blurring algorithms have different sensitivity degrees to the color, in order to simulate the color possibly existing in the natural environment as much as possible, in this embodiment, a color feature part (not shown in the figure) is provided on the surface layer of the texture feature part 3 for testing whether the blurring effect of the camera to be tested is associated with the specified color.
In some embodiments, the color feature is a gradient color layer that covers the surface of the texture feature 3. Color gradient is a means for simulating a three-dimensional space in a two-dimensional plane, and in a blurring algorithm, the three-dimensional space is often mistaken for being mistaken, so that false blurring is avoided, and therefore the capacity of avoiding false blurring of the blurring algorithm can be reflected by arranging a gradient color layer on the surface of the texture feature part 3.
In some embodiments, the camera blurring effect performance test card further includes:
and the gray frame 4 is arranged outside the test target object 1 and is positioned at the same horizontal plane with the test target object 1.
In the present embodiment, a gray frame 4 is disposed outside the test target 1, and the gray level of the gray frame 4 is set to a color capable of imitating the reflectivity of natural light to everything of about 18%, which is also referred to as 18 gray. When the camera shoots, the gray frame 4 can provide reference colors for the image sensor in the color demosaicing process in the imaging process, so that the white balance of the image in the final imaging process is accurate as much as possible.
Another aspect of the embodiments of the present application provides a camera blurring effect performance test system, including: a camera blurring effect performance test card; the bracket plate is arranged perpendicular to the horizontal plane and is matched with the camera blurring effect performance test card so as to be fixedly attached by the camera blurring effect performance test card; or the suspension rope is arranged at the top end of the camera blurring effect performance test card.
In this embodiment, the camera blurring effect performance testing system specifically includes a camera blurring effect performance testing card and a support board (not shown in the figure).
The camera blurring effect performance card mainly simulates a scene which may appear in reality and has an abnormal blurring effect (for example, a foreground image and a background image are blurred together) when a camera shoots a picture, and objectively tests the blurring effect performance when the camera shoots the picture. The camera blurring effect performance test card body comprises a test object 1, a contour characteristic part 2 and a texture characteristic part 3.
The mounting panel sets up perpendicularly and on the horizontal plane, and the outward appearance of mounting panel and camera virtuality effect capability test card adaptation, before using camera virtuality effect capability test card, need hug closely the back of camera virtuality effect capability test card on the mounting panel to make camera virtuality effect capability test card and mounting panel coincide completely as far as possible. In another embodiment, the camera virtualization effect performance test card can be vertically placed through a suspension rope arranged at the top end of the camera virtualization effect performance test card.
Through vertically placing the camera virtualization effect performance test card in cooperation with the support plate for shooting, the camera virtualization effect performance test card can be placed in physical spaces with different depths, and natural depth data can be obtained. Such as 3 x 5m rooms and 3 x 8 m rooms. When the position between the camera virtualization effect performance test card and the camera is unchanged, the natural depth of field obtained when the camera shoots the camera virtualization effect performance test card is larger in a room with larger depth. Helping the blurring algorithm to simulate how the natural optical depth of field is developed.
Another aspect of the embodiments of the present application further provides a method for manufacturing a camera blurring effect performance test card, including:
selecting a bottom plate for preparing the camera blurring effect performance test card;
a closed contour line is drawn on the upper surface of the bottom plate to form a contour characteristic part 2, and cells stacked layer by layer are laid along the trend of the contour characteristic part 2 to form a texture characteristic part 3;
printing a color with a gradient effect on the surface of the texture feature part 3 to form a gradient color layer;
and cutting along the contour line of the test object 1, and removing the area outside the contour line to obtain the camera blurring effect performance test card.
In this embodiment, the bottom plate is made of an Andi plate. Andy board is also called a snowboard or PVC foam board (PVC expansion sheet). Polyvinyl chloride is used as a main raw material, a foaming agent, a flame retardant and an anti-aging agent are added, and extrusion forming is carried out by adopting special equipment. Common colors are white and black. The Andi board can be compared with wood, and can be sawed, planed, nailed and bonded, and has special functions of no deformation, no cracking, no need of painting (with various colors), and the like; the low foaming sheet material can be welded, printed by ink and machined by sawing, drilling, milling and the like.
To sum up, this application embodiment provides a camera virtualization effect performance test card of camera virtualization effect performance test card, and camera virtualization effect performance test card includes: testing a subject 1; the test object 1 comprises a contour characteristic part 2 and a texture characteristic part 3; and the texture features 3 are arranged along the contour direction of the contour features 2. The embodiment of the application objectively tests the blurring effect performance when the camera shoots the picture by simulating the scene that the blurring effect of the picture shot by the camera is abnormal in reality.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The camera blurring effect performance test card provided by the embodiment of the present application is introduced in detail, and a specific example is applied to explain the principle and the implementation manner of the present application, and the description of the above embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. The utility model provides a camera virtualization effect capability test card which characterized in that includes:
testing the subject;
the test object comprises a contour characteristic part and a texture characteristic part; and
the texture features are arranged along the contour direction of the contour features.
2. The camera blurring effect performance test card of claim 1, wherein the contour features comprise one or more of jagged, wavy, pointed, enveloping, curved.
3. The camera blurring effect performance test card of claim 2, wherein the texture feature comprises a plurality of cells stacked layer by layer along a contour line of the contour feature and tightly connected to each other.
4. The camera blurring effect performance test card according to claim 3, wherein the plurality of unit cells are different in size and shape so that a texture formed by the plurality of unit cells is irregularly distributed.
5. The camera blurring effect performance test card of claim 4, wherein the test object further comprises a color feature portion disposed on a surface layer of the texture feature portion for testing whether the blurring effect of the camera to be tested is associated with a specified color.
6. The camera blurring effect performance test card of claim 5, wherein the color feature is a gradient color layer covering a surface of the texture feature.
7. The camera blurring effect performance test card according to claim 1, further comprising:
and the gray frame is arranged around the test object and is positioned at the same horizontal plane with the test object.
8. A camera blurring effect performance test system is characterized by comprising:
the camera blurring effect performance test card according to any one of claims 1 to 7; and
the bracket plate is arranged perpendicular to the horizontal plane and is matched with the camera blurring effect performance test card so as to be fixedly attached by the camera blurring effect performance test card; or
And the suspension rope is arranged at the top end of the camera blurring effect performance test card.
9. A method for preparing a camera blurring effect performance test card according to any one of claims 1 to 7, comprising:
selecting a bottom plate for preparing the camera blurring effect performance test card;
the upper surface of the bottom plate is carved with a closed contour line to form a contour characteristic part, and cells stacked layer by layer are laid along the trend of the contour characteristic part to form a texture characteristic part;
printing a color with a gradient effect on the surface of the texture feature part to form a gradient color layer;
and cutting along the contour line of the test object, and removing the area outside the contour line to obtain the camera blurring effect performance test card.
10. The method of claim 9, wherein the substrate is made of an Andy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111522623.1A CN114216656A (en) | 2021-12-13 | 2021-12-13 | Camera blurring effect performance test card, system and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111522623.1A CN114216656A (en) | 2021-12-13 | 2021-12-13 | Camera blurring effect performance test card, system and preparation method |
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| CN102158727A (en) * | 2011-03-31 | 2011-08-17 | 惠州Tcl移动通信有限公司 | Method and system for detecting color reducibility of camera of mobile phone |
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| CN106385546A (en) * | 2016-09-27 | 2017-02-08 | 华南师范大学 | Method and system for improving image-pickup effect of mobile electronic device through image processing |
| CN107977940A (en) * | 2017-11-30 | 2018-05-01 | 广东欧珀移动通信有限公司 | background blurring processing method, device and equipment |
| CN112887704A (en) * | 2019-11-29 | 2021-06-01 | 北京小米移动软件有限公司 | Camera performance test card and camera test system |
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2021
- 2021-12-13 CN CN202111522623.1A patent/CN114216656A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102158727A (en) * | 2011-03-31 | 2011-08-17 | 惠州Tcl移动通信有限公司 | Method and system for detecting color reducibility of camera of mobile phone |
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| CN106385546A (en) * | 2016-09-27 | 2017-02-08 | 华南师范大学 | Method and system for improving image-pickup effect of mobile electronic device through image processing |
| CN107977940A (en) * | 2017-11-30 | 2018-05-01 | 广东欧珀移动通信有限公司 | background blurring processing method, device and equipment |
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