CN111432074B - Method for assisting mobile phone user in acquiring picture information - Google Patents
Method for assisting mobile phone user in acquiring picture information Download PDFInfo
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- CN111432074B CN111432074B CN202010314967.2A CN202010314967A CN111432074B CN 111432074 B CN111432074 B CN 111432074B CN 202010314967 A CN202010314967 A CN 202010314967A CN 111432074 B CN111432074 B CN 111432074B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/62—Control of parameters via user interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
Abstract
The invention belongs to the technical field of picture information acquisition, and relates to a method for assisting a mobile phone user in carrying out picture information acquisition; the process comprises the following steps: the method comprises the following steps: acquiring angle data by using a mobile phone sensor; step two: calculating the photographing angle of the picture, namely photographing inclination and the compass geomagnetic angle of the current mobile phone camera orientation by referring to the acquired angle data, recording the angle data during photographing, and then calculating the angle data; step three: giving data feedback to the user in a real-time graphic mode of the marked photographing position; according to the method, the angle data of the real object acquired by the mobile phone sensor relative to the mobile phone is mapped and calculated, the user is guided to adjust the photographing angle, accurate picture information acquisition is achieved, the photographing angle acquired each time is marked, repeated photographing at the same angle is effectively prevented, and the user can be reminded of the omitted photographing angle.
Description
The technical field is as follows:
the invention belongs to the technical field of picture information acquisition, relates to a method for guiding a user to acquire picture information by using mobile phone sensor data, and particularly relates to a method for assisting a mobile phone user in acquiring picture information.
Background art:
at present, the image information acquisition modes are numerous, such as shooting through a camera, video recording through a video camera, video recording through monitoring equipment, scanning through scanning equipment or shooting through a mobile phone, and the like, and the convenient and quick use mainly comprises shooting through the mobile phone; for objects needing careful observation and analysis, the images at all positions of a target object are difficult to acquire due to the fact that the angles are large and the number of the images taken is large, the problem that the images at all positions of the target object are difficult to estimate is caused by omission of a certain photographing angle, especially under the condition that the position of the object is far away from an image analysis working point or under the condition that the object is short in time and the position of the object is inconvenient to enter for multiple times, the cost of image information analysis is greatly increased due to the fact that the object angle is missed.
In the prior art, chinese patent with publication number CN201310034597.7 discloses a method for positioning an object based on a mobile terminal, which includes the following steps: s1, calculating the distance between the target object and the mobile terminal based on the photography distance measuring principle; s2, acquiring the position information of the mobile terminal and the azimuth information of the target object relative to the mobile terminal; and S3, positioning the position information of the target object by combining the distance between the target object and the mobile terminal obtained in S1, the position information of the mobile terminal obtained in S2 and the orientation information of the target object relative to the mobile terminal. Chinese patent publication No. CN201610658483.3 discloses a photographing processing method, which comprises: acquiring a first photographed image which is generated by photographing and contains a target image, and extracting the target image from the first photographed image; and acquiring a second photographed image which is generated by photographing and does not contain the target image, and marking a filling area with the same image outline as the target image on the second photographed image so as to fill the extracted target image into the filling area during image synthesis processing. .
In summary, the way of capturing images of an object by taking pictures with a mobile phone is becoming more and more popular, when the shape of the object is complex and needs to be taken in multiple angles or all directions, a photographer is likely to miss a certain angle, which results in incomplete information acquisition, and in the prior art disclosed, there is no method or measure for guiding or assisting the photographer in performing complete information acquisition on the object.
The invention content is as follows:
the invention aims to overcome the defects of the prior mobile phone photographing image acquisition, and provides a method for assisting a mobile phone user in acquiring picture information aiming at the defects that the current mobile phone photographing image acquisition has large photographing amount and is easy to omit a certain area of an object.
In order to achieve the above purpose, the invention relates to a method for assisting a mobile phone user to acquire picture information, which comprises the following process steps:
the method comprises the following steps: acquiring angle data by using a mobile phone sensor, wherein the angle data comprises compass geomagnetic angle data and mobile phone inclination data;
step two: in the process of image acquisition, calculating the photographing angle of a picture, namely photographing inclination and compass geomagnetic angle of current mobile phone camera orientation by referring to the acquired angle data, recording the angle data during photographing, and then calculating the angle data;
step three: and (4) giving data feedback to the user in a real-time graphical mode by using the marked photographing position.
The method comprises the following steps: acquiring angle data by using a mobile phone sensor, wherein the angle data comprises compass geomagnetic angle data and mobile phone inclination data; the specific process comprises the following steps:
(1) acquiring compass geomagnetic angle data oriented by a mobile phone camera through a mobile phone direction sensor to obtain a horizontal direction angle numerical value within the range of 0-360 degrees, and marking the current photographing horizontal direction angle;
(2) a mobile phone sensor is used for obtaining the inclination angle of the mobile phone (the included angle of the mobile phone body on one side of the camera relative to the horizontal plane) to obtain a vertical direction angle value within the range of 0-90 degrees to mark the pitch angle of the current photographing equipment;
(3) dividing the 360-degree circumference of the horizontal direction of the mobile phone into N parts on average by taking the mobile phone as a circle center, wherein each part is used as an expected angle for photographing;
(4) the mobile phone is used as the center of a circle to evenly divide the vertical direction of the mobile phone into M parts, and each part is used as an expected pitch angle for photographing.
The second step of the invention: in the process of image acquisition, calculating the photographing angle of a picture, namely photographing inclination and compass geomagnetic angle of current mobile phone camera orientation by referring to the acquired angle data, recording the angle data during photographing, and then calculating the angle data; the method specifically comprises the following steps:
(1) guiding the user by using angle data in combination with mobile phone interface interaction;
(2) taking a picture and recording angle data of the user taking the picture at each angle, and taking the angle data as a basis for subsequent data processing;
the invention guides the user by combining angle data and mobile phone interface interaction, which comprises the following specific processes,
(1) when a picture is taken, a circle I is arranged at the center of a mobile phone screen and is used as an aligned sight for aligning a photographed object;
(2) establishing a rectangular coordinate system by taking a central point of a mobile phone screen as an original point, taking a straight line which passes through the original point and is parallel to a short frame of the mobile phone screen as an X axis and taking a straight line which passes through the original point and is vertical to the X axis as a Y axis;
(3) dividing the Y axis in the vertical direction of the screen into M parts, wherein each part is 90/M degrees, and each degree corresponds to a pitch angle (inclination angle of the mobile phone) of 0-90 degrees when the mobile phone takes a picture;
(4) dividing 0-360 degrees of an X axis in the horizontal direction of the screen into N parts according to compass geomagnetic angle data, wherein each part is 360/N degrees, and each degree corresponds to the direction angle of the compass geomagnetic angle from 0-360 degrees;
(5) a circle II is used for representing the compass geomagnetic angle and the pitch angle of the object to be photographed relative to the actual position of the mobile phone to be photographed to be mapped to the position in the mobile phone screen, the user is prompted to move the mobile phone left and right according to the relative position of the circle II and the circle I in the mobile phone screen, if the current mobile phone of the user falls on the left side of the current horizontal angle, the circle II is drawn on the left side of the Y axis, and the user is prompted to rotate the mobile phone left horizontally; the circle II is drawn on the right side of the Y axis on the contrary, and prompts the user to horizontally rotate the mobile phone to the right; the larger the difference between the angle mapped into the mobile phone and the expected angle is, the farther the distance from the Y axis is, so that the distance between the second circle and the Y axis represents the angle value deviating from the expected angle; the calculation formula of mapping the compass geomagnetic angle of the real object to be photographed to the position in the screen relative to the actual position of the mobile phone is as follows:
setting L as the next expected compass geomagnetic angle, x as the mobile phone sensor compass geomagnetic angle, and W as the mobile phone screen frame width, the calculation formula for drawing the coordinate value d by the circle two is as follows:
Dist(x,L)＝min[|x-L|,|x-L+360|,|L-x+360|]
a: when L < 180:
d ═ d |, when L < x < L +180, otherwise d ═ d |;
b: when L > 180:
d-d when L-180< x < L, otherwise d-d;
when d is less than 0, the drawing position of the circle II is the left side of the Y axis;
when d is greater than 0, the circle II is drawn at the right side of the Y axis;
when d is equal to 0, the drawing position of the circle II is coincident with the Y axis;
(6) prompting a user to turn the mobile phone up and down while performing the operation of the step (5), if the current mobile phone photographing pitch angle of the user is larger than an expected angle, drawing a circle II on the upper side of the X axis, and prompting the user to rotate the mobile phone upwards in the vertical plane; otherwise, drawing the circle II below the X axis, and prompting the user to rotate the mobile phone downwards in the vertical plane; the larger the angle difference is, the farther the distance from the X axis is, so that the distance from the circle II to the X axis represents the angle value deviating from the expected angle, and the pitch angle of the object to be photographed relative to the actual position of the mobile phone is mapped to the calculation formula of the position in the mobile phone screen:
setting L (0< L <90) as depression angle, coordinate value as d, picture height as H, y as mobile phone photographing depression angle
Dist(y,L)＝min[|y-L|,|y-L+360|,|L-y+360|]
D-d when L < x <90, otherwise d-d;
(7) when the first circle and the second circle are overlapped (or more than 50 percent of the first circle and the second circle are overlapped), the expected photographing angle is reached, and a user is prompted to photograph or photograph automatically.
Compared with the prior art, the designed method for assisting the mobile phone user in acquiring the picture information is complete and reasonable in steps, the angle data of the real object acquired by the mobile phone sensor relative to the mobile phone is subjected to mapping calculation, the user is guided to adjust the photographing angle, accurate picture information acquisition is achieved, the photographing angle acquired each time is marked, repeated photographing at the same angle is effectively prevented, the omitted photographing angle of the user can be reminded, the comprehensiveness and the efficiency of acquiring the real image information are guaranteed, and the method has obvious practical value for the related field of performing real simulation and analysis by photographing through the mobile phone at present.
Description of the drawings:
fig. 1 is a schematic diagram of a rectangular coordinate system established by a mobile phone screen during photographing according to the present invention.
Fig. 2 is a schematic diagram of the relative position of the circle two relative to the circle one in the photographing process according to the invention.
The specific implementation mode is as follows:
the invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Example 1:
the method for assisting the mobile phone user to acquire the picture information related to the embodiment comprises the following specific process steps:
1. acquiring angle data by using a mobile phone sensor, wherein the angle data comprises compass geomagnetic angle data and mobile phone inclination data; the method specifically comprises the following steps:
(1) acquiring compass geomagnetic angle data oriented by a mobile phone camera through a mobile phone direction sensor to obtain a horizontal direction angle numerical value within the range of 0-360 degrees, and marking the current photographing horizontal direction angle;
(2) a mobile phone sensor is used for obtaining the inclination angle of the mobile phone (the included angle of the mobile phone body on one side of a mobile phone camera relative to the horizontal plane) to obtain a vertical direction angle value in the range of 0-90 degrees to mark the pitch angle of the current photographing equipment;
(3) dividing the 360-degree circumference of the horizontal direction of the mobile phone into N parts on average by taking the mobile phone as a circle center, wherein each part is used as an expected angle for photographing;
(4) dividing the mobile phone into M parts in the vertical direction (namely the included angle range of the mobile phone body at one side of the mobile phone camera relative to the horizontal plane) of 0-90 degrees by taking the mobile phone as the center of a circle, wherein each part is used as an expected pitch angle for photographing;
2. in the process of image acquisition, calculating the photographing angle of a picture, namely photographing inclination and compass geomagnetic angle of current mobile phone camera orientation by referring to the acquired angle data, recording the angle data during photographing, and then calculating the angle data; the method specifically comprises the following steps:
(1) guiding the user by using data in combination with mobile phone interface interaction;
(2) taking a picture and recording angle data of the user taking the picture at each angle, and taking the angle data as a basis for subsequent data processing;
3. and (4) giving data feedback to the user in a real-time graphical mode by using the marked photographing position.
The specific process of guiding the user by using the angle data and combining the mobile phone interface interaction is that,
(1) when a picture is taken, a circle I is arranged at the center of a mobile phone screen and is used as an aligned sight for aligning a photographed object;
(2) establishing a rectangular coordinate system by taking a central point of a mobile phone screen as an original point, taking a straight line which passes through the original point and is parallel to a short frame of the mobile phone screen as an X axis and taking a straight line which passes through the original point and is vertical to the X axis as a Y axis, as shown in figure 1;
(3) dividing the Y axis in the vertical direction of the screen in the picture 1 into M parts, wherein each part is 90/M degrees, and each degree corresponds to a pitch angle (inclination angle of the mobile phone) of 0-90 degrees when the mobile phone shoots;
(4) dividing 0-360 degrees of an X axis in the horizontal direction of the screen in the figure 1 into N parts according to compass geomagnetic angle data, wherein each part is 360/N degrees, and each degree corresponds to the direction angle of the compass geomagnetic angle of 0-360 degrees;
(5) a circle II is used for representing the position of the actual position angle of the object to be photographed, which is mapped to the position in the mobile phone screen, as shown in FIG. 2, the user is prompted to move the mobile phone left and right according to the relative position of the circle II and the circle I in the mobile phone screen, if the current mobile phone of the user falls on the left side of the current horizontal angle, the circle II is drawn on the left side of the Y axis, and the user is prompted to rotate the mobile phone horizontally to the left; the circle II is drawn on the right side of the Y axis on the contrary, and prompts the user to horizontally rotate the mobile phone to the right; the larger the difference between the angle mapped to the mobile phone and the expected angle is, the farther the distance from the Y axis is, so that the distance between the circle II and the Y axis represents the angle value deviating from the expected angle, and the compass geomagnetic angle of the object to be photographed relative to the mobile phone is mapped to a screen by the calculation formula:
setting L as the next expected geomagnetic angle, x as the geomagnetic angle of the compass of the mobile phone sensor, and W as the width of the screen of the mobile phone, the calculation formula for drawing the coordinate value d by the circle II is as follows:
Dist(x,L)＝min[|x-L|,|x-L+360|,|L-x+360|
a: when L < 180:
d ═ d |, when L < x < L +180, otherwise d ═ d |;
b: when L > 180:
d-d when L-180< x < L, otherwise d-d;
when d is less than 0, the circle two is drawn at the left side of the Y axis
When d is greater than 0, the circle two is drawn at the right side of the Y axis
When d is equal to 0, the drawing position of the circle two is coincident with the Y axis
(6) Prompting the user to turn the mobile phone up and down while performing the operation of the step (5), as shown in fig. 2, if the current mobile phone photographing pitch angle of the user is larger than an expected angle, drawing a circle two on the upper side of the X axis, and prompting the user to rotate the mobile phone upwards in the vertical plane; otherwise, drawing the circle II below the X axis, and prompting the user to rotate the mobile phone downwards in the vertical plane; the larger the angle difference is, the farther the distance from the X axis is, so that the distance from the circle II to the X axis represents the angle value deviating from the expected angle, and the pitch angle of the object to be photographed relative to the mobile phone is mapped to the calculation formula of the mobile phone screen:
setting L (0< L <90) as depression angle, coordinate value as d, picture height as H, y as mobile phone photographing depression angle
Dist(y,L)＝min[|y-L|,|y-L+360|,|L-y+360|]
D-d when L < x <90, otherwise d-d;
(8) when the first circle and the second circle are overlapped (or more than 50 percent of the first circle and the second circle are overlapped), the expected photographing angle is reached, and a user is prompted to photograph or photograph automatically.
Example 2:
the method for assisting the mobile phone user in acquiring the picture information can be applied to the field of 3D modeling, when 3D modeling is performed, the method in the embodiment 1 is utilized to photograph a modeled object in all directions at all angles, the image acquisition at all angles is comprehensive, and angle data are used for participating in modeling, so that the 3D modeling can be completed quickly, the established model is closer to a real object, and the modeling effect is better; the method for assisting the mobile phone user in acquiring the picture information can also be used for shooting panoramic photos, the method in the embodiment 1 is used for acquiring images of all directions and all angles of the environment, the angle data are used for modeling the panoramic images together, the modeled panoramic images are clear in hierarchy, comprehensive and reliable, and missing parts of the modeling model are avoided.
The method for assisting the mobile phone user in acquiring the picture information can increase the integrity of acquired data, reserve the geomagnetic angle and the inclination of photographing for subsequent use, and ensure the continuity of space in some situations such as 3D modeling calculation and the like; for example, in the process of matching feature points between images, image pairs need to be specified in advance for matching feature points between the images, generally, whether two images are matched is unknown, violent matching is generally performed, that is, each image is matched with all other images through feature points, when a certain image pair is matched with enough feature points, the image pair is considered to be matched, and a large number of image pairs are mismatched due to the fact that a large number of mismatched exist in matching of the feature points; the method in embodiment 1 can calculate the view angle direction of each image, then screen the initial image pair according to the included angle of the view angle direction, and initially screen the image pair to reduce the matching times among the images, reduce the calculation amount and improve the matching precision.
Claims (3)
1. A method for assisting a mobile phone user in acquiring picture information is characterized by comprising the following steps: the process comprises the following steps:
the method comprises the following steps: acquiring angle data by using a mobile phone sensor, wherein the angle data comprises compass geomagnetic angle data and mobile phone inclination data; the specific process comprises the following steps:
(1) acquiring compass geomagnetic angle data oriented by a mobile phone camera through a mobile phone direction sensor to obtain a horizontal direction angle numerical value within the range of 0-360 degrees, and marking the current photographing horizontal direction angle;
(2) acquiring the inclination angle of the mobile phone by using a mobile phone sensor to obtain a vertical direction angle value within the range of 0-90 degrees so as to mark the pitch angle of the current photographing equipment;
(3) dividing the 360-degree circumference of the horizontal direction of the mobile phone into N parts on average by taking the mobile phone as a circle center, wherein each part is used as an expected angle for photographing;
(4) dividing the vertical direction of the mobile phone into M parts averagely by taking the mobile phone as a circle center, wherein each part is used as an expected pitch angle for photographing;
step two: in the process of image acquisition, calculating the photographing angle of a picture, namely photographing inclination and compass geomagnetic angle of current mobile phone camera orientation by referring to the acquired angle data, recording the angle data during photographing, and then calculating the angle data; the specific process is as follows:
(1) guiding the user by using angle data in combination with mobile phone interface interaction; the specific procedure for guiding the user is,
(a1) when a picture is taken, a circle I is arranged at the center of a mobile phone screen and is used as an aligned sight for aligning a photographed object;
(a2) establishing a rectangular coordinate system by taking a central point of a mobile phone screen as an original point, taking a straight line which passes through the original point and is parallel to a short frame of the mobile phone screen as an X axis and taking a straight line which passes through the original point and is vertical to the X axis as a Y axis;
(a3) dividing the Y axis in the vertical direction of the screen into M parts, wherein each part is 90/M degrees, and each degree corresponds to a pitch angle of 0-90 degrees when the mobile phone shoots;
(a4) dividing 0-360 degrees of an X axis in the horizontal direction of the screen into N parts according to compass geomagnetic angle data, wherein each part is 360/N degrees, and each degree corresponds to the direction angle of the compass geomagnetic angle from 0-360 degrees;
(a5) a circle II is used for representing the compass geomagnetic angle and the pitch angle of the object to be photographed relative to the actual position of the mobile phone to be photographed to be mapped to the position in the mobile phone screen, the user is prompted to move the mobile phone left and right according to the relative position of the circle II and the circle I in the mobile phone screen, if the current mobile phone of the user falls on the left side of the current horizontal angle, the circle II is drawn on the left side of the Y axis, and the user is prompted to rotate the mobile phone left horizontally; the circle II is drawn on the right side of the Y axis on the contrary, and prompts the user to horizontally rotate the mobile phone to the right; the larger the difference between the angle mapped into the mobile phone and the expected angle is, the farther the distance from the Y axis is, so that the distance between the second circle and the Y axis represents the angle value deviating from the expected angle;
(a6) prompting the user to turn the mobile phone up and down while performing the operation of the step (a5), if the current mobile phone photographing pitch angle of the user is larger than an expected angle, drawing a circle II on the upper side of the X axis, and prompting the user to rotate the mobile phone upwards in the vertical plane; otherwise, drawing the circle II below the X axis, and prompting the user to rotate the mobile phone downwards in the vertical plane; the larger the angle difference is, the farther the distance from the X axis is, so that the distance from the second circle to the X axis represents the angle value deviating from the expected angle;
(a7) when the first circle and the second circle coincide or coincide by more than 50%, the expected photographing angle is reached, and a user is prompted to photograph or photograph automatically;
(2) taking a picture and recording angle data of the user taking the picture at each angle, and taking the angle data as a basis for subsequent data processing;
step three: and (4) giving data feedback to the user in a real-time graphical mode by using the marked photographing position.
2. The method for assisting a mobile phone user in picture information collection according to claim 1, wherein: the calculation formula of the compass geomagnetic angle mapping of the real object to be photographed relative to the actual position of the mobile phone to the position in the screen is as follows:
setting L as the next expected compass geomagnetic angle, x as the mobile phone sensor compass geomagnetic angle, and W as the mobile phone screen frame width, the calculation formula for drawing the coordinate value d by the circle two is as follows:
Dist(x,L)＝min[|x-L|,|x-L+360|,|L-x+360|]
a: when L < 180:
d ═ d |, when L < x < L +180, otherwise d ═ d |;
b: when L > 180:
d-d when L-180< x < L, otherwise d-d;
when d is less than 0, the drawing position of the circle II is the left side of the Y axis;
when d is greater than 0, the circle II is drawn at the right side of the Y axis;
when d is 0, the circle two drawing position coincides with the Y axis.
3. The method for assisting a mobile phone user in picture information collection according to claim 2, wherein: the calculation formula that the pitch angle of the object to be photographed relative to the actual position of the mobile phone is mapped to the position in the mobile phone screen is as follows:
setting L (0< L <90) as depression angle, coordinate value as d, picture height as H, y as mobile phone photographing depression angle
Dist(y,L)＝min[|y-L|,|y-L+360|,|L-y+360|]
D-d when L < x <90, otherwise d-d.
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| WO2015085589A1 (en) * | 2013-12-13 | 2015-06-18 | 华为终端有限公司 | Method and terminal for acquiring panoramic image |
| CN109076158A (en) * | 2017-12-22 | 2018-12-21 | 深圳市大疆创新科技有限公司 | Panorama photographic method, photographing device and machine readable storage medium |
| CN110049226A (en) * | 2018-01-16 | 2019-07-23 | 飞狐信息技术（天津）有限公司 | A kind of image pickup method and system of panoramic pictures material |
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