CN113721818B - Image processing method, device, equipment and computer readable storage medium - Google Patents

Image processing method, device, equipment and computer readable storage medium Download PDF

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CN113721818B
CN113721818B CN202111027084.4A CN202111027084A CN113721818B CN 113721818 B CN113721818 B CN 113721818B CN 202111027084 A CN202111027084 A CN 202111027084A CN 113721818 B CN113721818 B CN 113721818B
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scaling
display screen
display image
touch
distance
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CN113721818A (en
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不公告发明人
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Beijing Chengshi Wanglin Information Technology Co Ltd
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Beijing Chengshi Wanglin Information Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/048—Indexing scheme relating to G06F3/048
    • G06F2203/04806—Zoom, i.e. interaction techniques or interactors for controlling the zooming operation

Abstract

The present disclosure provides an image processing method, apparatus, device, and computer-readable storage medium. The image processing method comprises the following steps: acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture; determining a current zoom ratio of a currently displayed image displayed on the touch display screen; determining a first scaling ratio based on the information corresponding to the scaling gesture and the current scaling ratio; and scaling the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen, wherein when the first scaling does not exceed the first predetermined scaling, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling exceeds the first predetermined scaling, the current display image is scaled with a center corresponding to the scaling gesture as the scaling center. Thereby improving the user experience.

Description

Image processing method, device, equipment and computer readable storage medium
Technical Field
The present application relates to the field of image processing, and in particular, to an image processing method, an image processing apparatus, an image processing device, and a computer-readable storage medium.
Background
As more and more mobile terminals having touch screens are provided, the requirements of users for touch screens are higher and higher. For example, in zooming a touch display screen with two or more fingers, a displayed image is usually zoomed with a center corresponding to a zoom gesture as a zoom center.
Disclosure of Invention
The present disclosure has been made in view of the above problems. The present disclosure provides an image processing method, an image processing apparatus, an image processing device, and a computer-readable storage medium.
According to an aspect of the present disclosure, there is provided an image processing method including: acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture; determining a current zoom ratio of a currently displayed image displayed on the touch display screen; determining a first scaling ratio based on the information corresponding to the scaling gesture and the current scaling ratio; and scaling the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen, wherein when the first scaling does not exceed the first predetermined scaling, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling exceeds the first predetermined scaling, the current display image is scaled with a center corresponding to the scaling gesture as the scaling center.
According to an example of the present disclosure, the information corresponding to the zoom gesture includes coordinates of two initial touch points before performing the zoom process on the touch display screen and coordinates of two post-zoom touch points after the zoom process, and determining the first zoom ratio based on the information corresponding to the zoom gesture and the current zoom ratio includes: a first scaling is determined based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scaling.
According to an example of the present disclosure, determining the first scaling based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scaling comprises: acquiring the distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points; acquiring the distance between the two zoomed touch points as the zoomed distance based on the coordinates of the two zoomed touch points; and determining a first scaling based on the base scaling distance, the scaled distance, and the current scaling.
According to an example of the present disclosure, prior to scaling the current display image, the method further comprises obtaining a current width, a current height, and a first position of the current display image relative to the touch display screen, wherein scaling the current display image displayed on the touch display screen based on the first scaling ratio to generate a scaled display image to be displayed on the touch display screen comprises: obtaining the width and the height of the zoomed display image and the second position of the zoomed display image relative to the touch display screen based on the current width and the current height of the current display image, the first position of the current display image relative to the touch display screen and the first zoom scale; and displaying the scaled display image on the touch display screen based on the width, the height, and the second position of the scaled display image.
According to an example of the present disclosure, the method further includes obtaining an original position of an original display image corresponding to the current display image and having a reference scaling with respect to the touch display screen, the original position including a first horizontal distance and a first vertical distance of an upper left corner of the original display image with respect to the upper left corner of the touch display screen, and in case the first scaling is larger than a second predetermined scaling, the method further includes: in the case where the distance of the left side of the zoomed display image relative to the left side of the touch display screen exceeds the first horizontal distance, the distance to the left of the zoomed display image relative to the left of the touch screen display is set to a first horizontal distance, in the case where the distance to the right side of the zoomed display image relative to the right side of the touch display screen exceeds the first horizontal distance, the distance to the right of the zoomed display image relative to the right of the touch display screen is set to a first horizontal distance, in case the distance of the upper side of the zoomed display image with respect to the upper side of the touch display screen exceeds a first vertical distance, setting a distance of an upper side of the zoomed display image with respect to an upper side of the touch display screen to a first vertical distance, and in case the distance of the lower side of the zoomed display image with respect to the lower side of the touch display screen exceeds a first vertical distance, the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen is set to be a first vertical distance.
According to one example of the present disclosure, a zoomed display image displayed on the touch display screen is zoomed to a fourth predetermined zoom ratio within a predetermined time period when the first zoom ratio exceeds the third predetermined zoom ratio.
According to an example of the present disclosure, prior to scaling the currently displayed image based on the first scaling ratio, the method further comprises: replacing the currently displayed image with the first resolution with a first displayed image with a second resolution in case the first scaling is larger than a fifth predetermined scaling, the second resolution being higher than the first resolution; and generating a scaled display image to be displayed on the touch display screen based on the first display image.
According to an aspect of the present disclosure, there is provided an image processing apparatus including: the first screen touch information acquisition module is used for acquiring first screen touch information on the touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture; a current zoom ratio determination module for determining a current zoom ratio of a current display image displayed on the touch display screen; the first scaling determining module is used for determining a first scaling based on the information corresponding to the scaling gesture and the current scaling; and a generation module, configured to scale the current display image based on a first scaling ratio to generate a scaled display image to be displayed on the touch display screen, where when the first scaling ratio does not exceed a first predetermined scaling ratio, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling ratio exceeds the first predetermined scaling ratio, the current display image is scaled with a center corresponding to the scaling gesture as the scaling center.
According to an example of the present disclosure, the information corresponding to the zoom gesture includes coordinates of two initial touch points before performing zoom processing on the touch display screen and coordinates of two zoomed touch points after the zoom processing, and the first zoom ratio determination module is further configured to: a first scaling is determined based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scaling.
According to an example of the present disclosure, the first scaling module is further configured to: acquiring the distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points; acquiring the distance between the two zoomed touch points as the zoomed distance based on the coordinates of the two zoomed touch points; and determining a first scaling based on the base scaling distance, the scaled distance, and the current scaling.
According to an example of the present disclosure, before the generating module zooms the currently displayed image, the apparatus further includes a first position obtaining module configured to obtain a current width, a current height, and a first position of the currently displayed image relative to the touch display screen, wherein the generating module is further configured to: obtaining the width and the height of the zoomed display image and the second position of the zoomed display image relative to the touch display screen based on the current width and the current height of the current display image, the first position of the current display image relative to the touch display screen and the first zoom scale; and displaying the scaled display image on the touch display screen based on the width, the height, and the second position of the scaled display image.
According to an example of the present disclosure, the apparatus further includes an original position acquiring module configured to acquire an original position of an original display image corresponding to the current display image and having a reference scaling with respect to the touch display screen, the original position including a first horizontal distance and a first vertical distance of an upper left corner of the original display image with respect to the upper left corner of the touch display screen, and in a case where the first scaling is greater than a second predetermined scaling, the generating module is further configured to: in the case where the distance of the left side of the zoomed display image relative to the left side of the touch display screen exceeds the first horizontal distance, the distance to the left of the zoomed display image relative to the left of the touch screen display is set to a first horizontal distance, in the case where the distance to the right side of the zoomed display image relative to the right side of the touch display screen exceeds the first horizontal distance, the distance to the right of the zoomed display image relative to the right of the touch display screen is set to a first horizontal distance, in case the distance of the upper side of the scaled display image with respect to the upper side of the touch display screen exceeds a first vertical distance, setting a distance of an upper side of the zoomed display image with respect to an upper side of the touch display screen to a first vertical distance, and in case the distance of the lower side of the zoomed display image with respect to the lower side of the touch display screen exceeds a first vertical distance, the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen is set to be a first vertical distance.
According to one example of the present disclosure, the generation module is to zoom the zoomed display image displayed on the touch display screen to a fourth predetermined zoom ratio within a predetermined time period when the first zoom ratio exceeds the third predetermined zoom ratio.
According to an example of the disclosure, prior to scaling the currently displayed image based on the first scaling, the generation module is further to: replacing the currently displayed image with the first resolution with a first displayed image with a second resolution in case the first scaling is larger than a fifth predetermined scaling, the second resolution being higher than the first resolution; and generating a scaled display image to be displayed on the touch display screen based on the first display image.
According to one method of the present disclosure, there is provided an image processing apparatus including: a processor; and a memory in which computer-readable program instructions are stored, wherein the image processing method described above is performed when the computer-readable program instructions are executed by the processor.
According to an aspect of the present disclosure, there is provided a computer-readable storage medium for storing computer-readable instructions, which, when executed by a computer, cause the computer to perform the above-described image processing method.
In the above aspect of the present disclosure, different zoom centers may be selected according to the zoom scale, so as to adaptively provide a user with multiple zoom modes, improving user experience.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in more detail embodiments of the present disclosure with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. In the drawings, like reference numbers generally represent like parts or steps.
FIG. 1 is a flow chart of an image processing method according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method of determining a first scaling according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of a method of displaying a scaled display image on a touch display screen according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of zooming a currently displayed image with a center of the touch screen as a center of zooming in accordance with an embodiment of the present disclosure;
FIGS. 5(a) and 5(b) are schematic diagrams of zooming a currently displayed image with a center corresponding to a zoom gesture as a zoom center according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of an original display image with a preset zoom scale of 1 relative to an original position of the touch display screen according to an embodiment of the present disclosure;
FIG. 7 is another schematic diagram of an original display image with a preset zoom scale of 1 relative to an original position of the touch display screen in accordance with an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of an image processing apparatus according to an embodiment of the present disclosure;
FIG. 9 is a schematic diagram of an image processing apparatus according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram of a computer-readable storage medium according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without any inventive step, are intended to be within the scope of the present disclosure.
Flow charts are used herein to illustrate steps of methods according to embodiments of the present application. It should be understood that the preceding and following steps are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or steps may be removed from the processes.
First, an image processing method for implementing an embodiment of the present disclosure is described with reference to fig. 1. For example, the method may be implemented in software, hardware, firmware, or any combination thereof, loaded and executed by a processor in a device such as a cell phone, a tablet, a laptop, a desktop, a web server, or the like. By the method, various zooming modes can be adaptively provided for the user, and the user experience is improved.
For example, the image processing method of the present disclosure may be applied to various suitable fields, such as automobile displays and the like. For example, a set of images may be taken around a car that is currently to be displayed, perhaps 2 images with different resolutions every 10 degrees, for a total of 72 images, and then scaled according to the image processing method of the present disclosure.
As shown in fig. 1, the image processing method 100 includes the following steps S101-S104.
In step S101, first screen touch information on a touch display screen is obtained, where the first screen touch information includes information corresponding to a zoom gesture.
In step S102, a current zoom ratio of a currently displayed image displayed on the touch display screen is determined.
In step S103, a first zoom ratio is determined based on the information corresponding to the zoom gesture and the current zoom ratio.
In step S104, the current display image is scaled based on the first scaling ratio to generate a scaled display image to be displayed on the touch display screen, wherein when the first scaling ratio does not exceed a first predetermined scaling ratio, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling ratio exceeds the first predetermined scaling ratio, the current display image is scaled with a center corresponding to the scaling gesture as a scaling center.
For example, for step S101, it may be first detected by a sensor on the touch display screen whether there is screen touch information. The screen touch information may include information corresponding to a single-finger swipe gesture, information corresponding to a double-finger swipe gesture, information corresponding to a swipe gesture with more than two fingers, information corresponding to a double-finger zoom gesture, information corresponding to a zoom gesture with more than two fingers, and the like. The information corresponding to the zooming gesture is taken as an example to perform corresponding processing on the touch display screen.
For example, touch displays may be incorporated into a wide range of devices, including digital televisions, digital direct broadcast systems, wireless broadcast systems, Personal Digital Assistants (PDAs), laptop or desktop computers, tablet computers, e-book readers, digital cameras, digital recording devices, digital media players, video gaming devices, video gaming consoles, cellular or satellite radio telephones (so-called "smart phones"), video teleconferencing devices, video streaming devices, and the like.
For example, for steps S102 and S103, the information corresponding to the zoom gesture may include coordinates of two initial touch points on the touch display screen before performing the zoom process and coordinates of two post-zoom touch points after the zoom process, and determining the first zoom ratio based on the information corresponding to the zoom gesture and the current zoom ratio may include: determining the first scaling based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scaling. For example, the size of the current scale and the first scale may be between 0.92-5.5.
Fig. 2 illustrates a flow chart of a method 200 of determining a first scaling according to an embodiment of the present disclosure.
As shown in fig. 2, the first scaling may be determined based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scaling through the steps shown in fig. 2: acquiring a distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points (S201); acquiring a distance between the two zoomed touch points as a zoomed distance based on the coordinates of the two zoomed touch points (S202); and determining the first scaling based on the reference scaling distance, the post-scaling distance and the current scaling (S203).
As an example, assume the coordinates of two initial touch points on the touch display screen before performing the zoom process are:
Point1＝(x0,y0) (1)
Point2＝(x1,y1) (2)
the coordinates of two zoomed touch points detected in real time and subjected to zooming processing are assumed as follows:
Point3＝(x2,y2) (3)
Point4＝(x3,y3) (4)
then the distance d between the two initial touch points is taken as a reference scaling distance:
Figure BDA0003243953730000071
the scaled distance l is calculated as follows:
Figure BDA0003243953730000072
then, the first scaling may be calculated as follows:
Scale_1＝(l-d)/d+Scale_0 (7)
where Scale _0 represents the current scaling.
For example, prior to scaling the currently displayed image, the method further includes obtaining a current width, a current height, and a first position of the currently displayed image relative to the touch display screen of the touch display screen.
FIG. 3 illustrates a flow chart of a method 300 of displaying a scaled display image on a touch display screen according to an embodiment of the disclosure.
As shown in fig. 3, scaling the current display image displayed on the touch display screen based on the first scaling ratio to generate a scaled display image to be displayed on the touch display screen may include: obtaining a width and a height of a zoomed display image and a second position of the zoomed display image relative to the touch display screen based on a current width and a current height of the current display image, a first position of the current display image relative to the touch display screen and a first zoom scale (S301); and displaying the scaled display image on the touch display screen based on the width, height, and the second position of the scaled display image (S302).
Next, details of step S104 may be described with reference to fig. 4-5. FIG. 4 shows a schematic diagram of zooming a currently displayed image with the center of the touch display screen as the center of zooming, according to an embodiment of the disclosure. Fig. 5(a) and 5(b) illustrate schematic diagrams of zooming a current display image with a center corresponding to a zoom gesture as a zoom center according to an embodiment of the present disclosure, fig. 5(a) illustrates the display image before zooming, and fig. 5(b) illustrates the display image after zooming.
For example, with step S104, first, the size of the display image after scaling is calculated:
width＝Scale_1/Scale_0*pointDownData.width (8)
height＝Scale_1/Scale_0*pointDownData.height (9)
wherein width represents the width of the zoomed display image, height represents the height of the zoomed display image, pointdowndata.
As an example, as shown in fig. 4, when the first scaling does not exceed the first predetermined scaling, the currently displayed image is scaled with the center of the touch display screen as a scaling center. For example, the first predetermined scaling is 1 and the first scaling is 0.95, then based on equations (8) and (9), the second position of the scaled display image relative to the touch display screen (in terms of the horizontal and vertical distances of the upper left corner of the scaled display image relative to the upper left corner of the touch display screen) is:
left＝(windowWidth-width)/2 (10)
top＝(windowWidth-height)/2 (11)
the window width and the window width respectively represent the height and the width of the touch display screen, and the left and the top respectively represent the horizontal distance and the vertical distance of the upper left corner of the zoomed display image relative to the upper left corner of the touch display screen.
As another example, as shown in fig. 5(a) and 5(b), when the first zoom ratio exceeds the first predetermined zoom ratio, the currently displayed image is zoomed with a center corresponding to the zoom gesture as a zoom center. For example, with the rear vehicle light as the zoom center, in the case that the first predetermined zoom ratio is 1 and the first zoom ratio is 2, the second position of the zoomed display image relative to the touch display screen (expressed as the horizontal distance and the vertical distance of the upper left corner of the zoomed display image relative to the upper left corner of the touch display screen) is:
left＝center.x–B (12)
wherein, B ═ A Scale _1/Scale _0 (13)
A＝center.x-pointDownData.left (14)
top＝center.y–D (15)
Wherein D ═ C Scale _1/Scale _0 (16)
C＝center.y-pointDownData.top (17)
Where left and top represent the horizontal and vertical distances, respectively, of the top left corner of the zoomed display image relative to the top left corner of the touch display screen. The method comprises the steps of displaying a touch display screen on a touch screen, and displaying a zoom image on the touch screen, wherein the zoom image comprises a left angle and a right angle, the left angle of the current display image is relative to the left angle of the touch display screen, the touch down data indicates the horizontal distance of the left angle of the current display image relative to the left angle of the touch display screen, and the touch down data indicates the vertical distance of the left angle of the current display image relative to the left angle of the touch display screen. center.x and center.y represent the horizontal and vertical distances, respectively, in the currently displayed image, of the center corresponding to the zoom gesture with respect to the upper left corner of the touch display screen.
As one example, a zoomed display image displayed on the touch display screen is zoomed to a third predetermined zoom ratio within a predetermined time period when the first zoom ratio exceeds the third predetermined zoom ratio. As one example, for example, where the third predetermined zoom ratio is set to 5, when the first zoom ratio is 5.5, the zoomed display image may be zoomed to the third predetermined zoom ratio within 3 seconds, rather than being immediately zoomed to the third predetermined zoom ratio, thereby providing the user with an animated experience.
It should be appreciated that the predetermined scaling and the predetermined time period may be set as desired and are not limited herein.
As another example, prior to scaling the currently displayed image based on the first scaling ratio, the method further comprises: in the case where the first zoom ratio is greater than a fifth predetermined zoom ratio, replacing a currently displayed image having a first resolution with a first displayed image having a second resolution, the second resolution being higher than the first resolution; and generating a scaled display image to be displayed on the touch display screen based on the first display image.
For example, both the current display image with the first resolution and the first display image with the second resolution may be stored in advance. For example, the first resolution is (2016 pixels 1512 pixels) and the second resolution is (4032 pixels 3024 pixels). As one example, the first resolution of the currently displayed image is (2016 pixels 1512 pixels), and prior to scaling the currently displayed image, if the first scaling is greater than a fifth predetermined scaling (e.g., 1.5), the currently displayed image is replaced with the first displayed image having a resolution of (4032 pixels 3024 pixels), and a scaled displayed image to be displayed on the touch screen is generated based on the first displayed image to make the scaled displayed image more legible.
It should be appreciated that the first resolution, the second resolution, and the fifth predetermined scaling are merely examples, and suitable values may be set according to the needs, and are not limited herein.
For example, an original position of an original display image corresponding to a current display image and having a reference scaling ratio with respect to the touch display screen may be previously set with reference to fig. 6 to 7 to obtain a position of a scaled display image with reference to the original position and the reference scaling ratio. In the present disclosure, the reference scaling is set to 1 as an example.
FIG. 6 is a schematic diagram illustrating an original position of an original display image with a preset zoom scale of 1 relative to the touch display screen according to an embodiment of the disclosure. FIG. 7 shows another schematic diagram of an original position of an original display image with a preset zoom scale of 1 relative to the touch display screen according to an embodiment of the disclosure.
As shown in fig. 6, as an example, an initial aspect ratio of an image to be displayed is first acquired. For example, during the scaling and display of an image, the aspect ratio of the image is always equal to the initial aspect ratio. Next, in the case where the aspect ratio of the touch display screen is greater than or equal to the initial aspect ratio of the image to be displayed, the Height of the original display image scaled to 1 is set in advance to be equal to the Height of the touch display screen, and then the original Height _0, the original Width _0, and the original position with respect to the touch display screen of the original display image scaled to 1 are calculated as follows:
Height_0＝windowHeight
Width_0＝Height_0*imgAspect
Left_0＝(windowWidth-Width_0)/2
Top_0＝0 (18)
the method comprises the steps of displaying an original display image on a touch display screen, wherein the original display image comprises a Left upper corner and a right upper corner, the width and the height of the touch display screen are respectively represented by the width and the height of the touch display screen, imgAssict represents an initial width-to-height ratio, and Left _0 and Top _0 respectively represent a first horizontal distance and a first vertical distance of the upper Left corner of the original display image with the scaling ratio of 1 relative to the upper Left corner of the touch display screen. The original position of an original display image with the scaling ratio of 1 relative to the touch display screen is represented by Left _0 and Top _0 as examples.
As another example, as shown in fig. 7, in the case where the touch display screen aspect ratio is smaller than the initial aspect ratio of the image to be displayed, the Width of the original display image scaled to 1 is set in advance to be equal to the Width of the touch display screen in the portrait display direction, and then the original Height _0, original Width _0, and original position with respect to the touch display screen of the original display image scaled to 1 are calculated as follows:
Width_0＝windowWidth
Height_0＝Width_0/imgAspect
Top_0＝(windowHeight-Height_0)/2
Left_0＝0 (19)
the method comprises the steps of displaying an original display image on a touch display screen, wherein the original display image comprises a Left upper corner and a right upper corner, the width and the height of the touch display screen are respectively represented by the width and the height of the touch display screen, imgAssict represents an initial width-to-height ratio, and Left _0 and Top _0 respectively represent a first horizontal distance and a first vertical distance of the upper Left corner of the original display image with the scaling ratio of 1 relative to the upper Left corner of the touch display screen. The original position of an original display image with the scaling ratio of 1 relative to the touch display screen is represented by Left _0 and Top _0 as examples.
For example, after the original position of the original display image corresponding to the current display image with the reference scaling with respect to the touch display screen is obtained through fig. 6-7, the position of the scaled display image may be obtained based on the original position and the reference scaling.
For example, after obtaining the original position of the original display image at the reference scaling (e.g. scaling of 1) relative to the touch display screen, in case the first scaling (e.g. 1.5) is larger than the second predetermined scaling (e.g. 1), the image processing method may further include: setting a distance of a left side of the zoomed display image relative to a left side of the touch display screen to a first horizontal distance if the distance exceeds the first horizontal distance; setting the distance of the right side of the zoomed display image relative to the right side of the touch display screen as a first horizontal distance when the distance of the right side of the zoomed display image relative to the right side of the touch display screen exceeds the first horizontal distance; setting the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen as a first vertical distance under the condition that the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen exceeds the first vertical distance; and setting the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen to be a first vertical distance in case the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen exceeds the first vertical distance. Thus, it is possible to prevent the zoomed image from being displayed excessively off the center of the screen.
As seen from the image processing method disclosed by the disclosure, different zooming centers can be selected according to the zooming proportion, so that various zooming modes are adaptively provided for a user, and the user experience is improved.
An image processing method according to an embodiment of the present disclosure is described above with reference to fig. 1 to 7. Next, an image processing apparatus according to an embodiment of the present disclosure is described with reference to fig. 8.
As shown in fig. 8, the image processing apparatus 1000 according to the embodiment of the present disclosure includes a first screen touch information acquisition module 1001, a current scaling determination module 1002, a first scaling determination module 1003, a generation module 1004, a first position acquisition module 1005, and an original position acquisition module 1006. Those skilled in the art understand that: these modules may be implemented in various ways by hardware alone, by software alone, or by a combination thereof, and the present disclosure is not limited to any one of them. These modules may be implemented, for example, by a Central Processing Unit (CPU), image processor (GPU), Tensor Processor (TPU), Field Programmable Gate Array (FPGA) or other form of processing unit having data processing and/or instruction execution capabilities and corresponding computer instructions.
For example, the first screen touch information obtaining module 1001 may be configured to obtain first screen touch information on a touch display screen, where the first screen touch information includes information corresponding to a zoom gesture.
For example, the current zoom ratio determination module 1002 may be configured to determine a current zoom ratio of a currently displayed image displayed on the touch screen display.
For example, the first scaling module 1003 may be configured to determine the first scaling based on the information corresponding to the scaling gesture and the current scaling.
For example, the information corresponding to the zoom gesture may include coordinates of two initial touch points before performing the zoom process on the touch display screen and coordinates of two zoomed touch points after the zoom process, and the first zoom ratio determining module 1003 may be configured to determine the first zoom ratio based on the coordinates of the two initial touch points, the coordinates of the two zoomed touch points, and the current zoom ratio. For example, the size of the current scale and the first scale may be between 0.92-5.5.
For example, the first scaling module 1003 may be further configured to: acquiring the distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points; acquiring the distance between the two zoomed touch points as the zoomed distance based on the coordinates of the two zoomed touch points; and determining the first scale based on the base scaling distance, the post-scaling distance, and the current scale.
As an example, assume the coordinates of two initial touch points on the touch display screen before performing the zoom process are:
Point1＝(x0,y0) (20)
Point2＝(x1,y1) (21)
the coordinates of two zoomed touch points detected in real time and subjected to zooming processing are assumed as follows:
Point3＝(x2,y2) (22)
Point4＝(x3,y3) (23)
then the distance d between the two initial touch points is taken as a reference scaling distance:
Figure BDA0003243953730000131
the post-zoom distance l is calculated as follows:
Figure BDA0003243953730000132
then, the first scaling may be calculated as follows:
Scale_1＝(l-d)/d+Scale_0 (26)
where Scale _0 represents the current scaling.
For example, the generating module 1004 may scale the scaled display image displayed on the touch display screen to a fourth predetermined scale within a predetermined time period when the first scale exceeds a third predetermined scale. As one example, for example, in a case where the third zoom ratio is set to 5, when the first zoom ratio is 5.5, the zoomed display image may be zoomed to the third predetermined zoom ratio within 3 seconds, instead of being immediately zoomed to the third predetermined zoom ratio, thereby providing the user with an animated experience.
It should be appreciated that the predetermined scaling and the predetermined time period may be set as desired and are not limited herein.
For example, prior to scaling the currently displayed image based on the first scaling, the generating module 1004 may be further configured to: in the case where the first zoom ratio is greater than a fifth predetermined zoom ratio, replacing a currently displayed image having a first resolution with a first displayed image having a second resolution, the second resolution being higher than the first resolution; and generating a scaled display image to be displayed on the touch display screen based on the first display image.
For example, both the current display image with the first resolution and the first display image with the second resolution may be stored in advance. For example, the first resolution is (2016 pixels 1512 pixels) and the second resolution is (4032 pixels 3024 pixels). As one example, the first resolution of the currently displayed image is (2016 pixels 1512 pixels), and prior to scaling the currently displayed image, if the first scaling is greater than a fifth predetermined scaling (e.g., 1.5), the currently displayed image is replaced with the first displayed image having a resolution of (4032 pixels 3024 pixels), and a scaled displayed image to be displayed on the touch screen is generated based on the first displayed image to make the scaled displayed image more legible.
It should be appreciated that the first resolution, the second resolution, and the fifth predetermined scaling are merely examples, and suitable values may be set according to the needs, and are not limited herein.
For example, before zooming the currently displayed image, the first position obtaining module 1005 may be configured to obtain a current width, a current height, and a first position of the currently displayed image relative to the touch display screen. The generating module 1004 may also be configured to: obtaining the width and the height of the zoomed display image and the second position of the zoomed display image relative to the touch display screen based on the current width and the current height of the current display image, the first position of the current display image relative to the touch display screen and the first zoom scale; and displaying the scaled display image on the touch display screen based on the width and height of the scaled display image and the second position.
For example, the original position obtaining module 1006 may be configured to obtain an original position of an original display image corresponding to the current display image and having a reference scaling with respect to the touch display screen, where the original position includes a first horizontal distance and a first vertical distance of an upper left corner of the original display image with respect to the upper left corner of the touch display screen, and in a case that the first scaling is larger than a second predetermined scaling, the generating module is further configured to: setting the distance of the zoomed display image left side with respect to the touch display screen left side to a first horizontal distance in case the distance of the zoomed display image left side with respect to the touch display screen left side exceeds the first horizontal distance, setting the distance of the zoomed display image right side with respect to the touch display screen right side to a first horizontal distance in case the distance of the zoomed display image right side with respect to the touch display screen right side exceeds the first horizontal distance, setting the distance of the zoomed display image upper side with respect to the touch display screen upper side to a first vertical distance in case the distance of the zoomed display image upper side with respect to the touch display screen upper side exceeds the first vertical distance, and setting the distance of the zoomed display image lower side with respect to the touch display screen lower side to the first vertical distance in case the distance of the zoomed display image lower side with respect to the touch display screen exceeds the first vertical distance, setting a distance of a lower side of the zoomed display image relative to a lower side of the touch display screen to a first vertical distance. Thus, it is possible to prevent the zoomed image from being displayed excessively off the center of the screen.
As can be seen from the image processing apparatus of the present disclosure, the image processing apparatus of the present disclosure may select different zoom centers according to the zoom scale, thereby adaptively providing a plurality of zoom modes for a user and improving user experience.
Next, an image processing apparatus 1100 according to an embodiment of the present disclosure is described with reference to fig. 9. Fig. 9 shows a schematic diagram of an image processing device 1100 according to an embodiment of the disclosure. Since the functions of the image processing apparatus 1100 of the present embodiment are the same as the details of the method described hereinabove with reference to fig. 1, a detailed description of the same is omitted herein for the sake of simplicity.
The image processing apparatus 1100 of the present disclosure includes a processor 1102; and a memory 1101 in which computer readable instructions are stored, which when executed by the processor perform a method of image processing, the method comprising: acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture; determining a current zoom ratio of a currently displayed image displayed on the touch display screen; determining a first zoom scale based on information corresponding to the zoom gesture and the current zoom scale; and scaling the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen, wherein when the first scaling does not exceed a first predetermined scaling, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling exceeds the first predetermined scaling, the current display image is scaled with a center corresponding to the scaling gesture as a scaling center.
For technical effects of the image processing apparatus 1000 and the image processing device 1100 in different embodiments, reference may be made to technical effects of the image processing method provided in the embodiments of the present disclosure, which are not described herein again.
The image processing apparatus 1000 and the image processing device 1100 may be used for various appropriate electronic devices.
Fig. 10 is a schematic diagram of a computer-readable storage medium 1200 according to an embodiment of the present disclosure.
As shown in fig. 10, the present disclosure also includes a computer-readable storage medium 1200 for storing computer-readable instructions 1201 which, when executed by a computer, the computer performs an image processing method, the method comprising: acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture; determining a current zoom ratio of a currently displayed image displayed on the touch display screen; determining a first zoom scale based on information corresponding to the zoom gesture and the current zoom scale; and scaling the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen, wherein when the first scaling does not exceed a first predetermined scaling, the current display image is scaled with a center of the touch display screen as a scaling center, and when the first scaling exceeds the first predetermined scaling, the current display image is scaled with a center corresponding to the scaling gesture as a scaling center.
The computer-readable storage medium includes, but is not limited to, volatile memory and/or non-volatile memory, for example. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc.
Those skilled in the art will appreciate that the disclosure of the present disclosure is susceptible to numerous variations and modifications. For example, the various devices or components described above may be implemented in hardware, or may be implemented in software, firmware, or a combination of some or all of the three.
Further, while the present disclosure makes various references to certain elements of a system according to embodiments of the present disclosure, any number of different elements may be used and run on a client and/or server. The units are illustrative only, and different aspects of the systems and methods may use different units.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present disclosure is not limited to any specific form of combination of hardware and software.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The foregoing is illustrative of the present disclosure and is not to be construed as limiting thereof. Although a few exemplary embodiments of this disclosure have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this disclosure. Accordingly, all such modifications are intended to be included within the scope of this disclosure as defined in the claims. It is to be understood that the foregoing is illustrative of the present disclosure and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The disclosure is defined by the claims and their equivalents.

Claims (14)

1. An image processing method comprising:
acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture;
determining a current zoom ratio of a currently displayed image displayed on the touch display screen;
determining a first zoom scale based on information corresponding to the zoom gesture and the current zoom scale; and
scaling the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen,
wherein the currently displayed image is zoomed with a center of the touch display screen as a zoom center when the first zoom ratio does not exceed a first predetermined zoom ratio, and the currently displayed image is zoomed with a center corresponding to the zoom gesture as a zoom center when the first zoom ratio exceeds the first predetermined zoom ratio,
wherein the information corresponding to the zoom gesture includes coordinates of two initial touch points before performing zoom processing on the touch display screen and coordinates of two zoomed touch points after zoom processing, and the determining a first zoom ratio based on the information corresponding to the zoom gesture and the current zoom ratio includes:
and determining the first scaling based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points and the current scaling, wherein the first scaling represents a proportional relation between the scaled display image and an original display image, and the original display image is a display image which corresponds to the current display image and has a reference scaling.
2. The image processing method of claim 1, wherein the determining the first scale based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points, and the current scale comprises:
acquiring the distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points;
acquiring the distance between the two zoomed touch points as the zoomed distance based on the coordinates of the two zoomed touch points; and
determining the first scale based on the base scaling distance, the post-scaling distance, and the current scale.
3. The image processing method of claim 1, wherein prior to scaling the currently displayed image, the method further comprises obtaining a current width, a current height, and a first position of the currently displayed image relative to the touch display screen,
wherein the scaling a current display image displayed on the touch display screen based on the first scaling to generate a scaled display image to be displayed on the touch display screen comprises:
obtaining the width and the height of the zoomed display image and the second position of the zoomed display image relative to the touch display screen based on the current width and the current height of the current display image, the first position of the current display image relative to the touch display screen and the first zoom scale; and
displaying the scaled display image on the touch display screen based on the width, height, and the second position of the scaled display image.
4. The image processing method of claim 3, the method further comprising:
obtaining an original position of the original display image relative to the touch display screen, the original position including a first horizontal distance and a first vertical distance of an upper left corner of the original display image relative to an upper left corner of the touch display screen,
in the case that the first scaling is greater than a second predetermined scaling, the method further comprises:
setting the distance of the left side of the zoomed display image to the left side of the touch display screen to a first horizontal distance in case the distance of the left side of the zoomed display image to the left side of the touch display screen exceeds the first horizontal distance,
setting the distance of the right side of the zoomed display image to the right side of the touch display screen to a first horizontal distance in case the distance of the right side of the zoomed display image to the right side of the touch display screen exceeds the first horizontal distance,
setting the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen to a first vertical distance in case the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen exceeds the first vertical distance, an
Setting the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen to a first vertical distance in case the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen exceeds the first vertical distance.
5. The image processing method according to any one of claims 1 to 4, wherein the scaled display image displayed on the touch display screen is scaled to a fourth predetermined scaling within a predetermined time period when the first scaling exceeds a third predetermined scaling.
6. The image processing method of any of claims 1-4, wherein prior to scaling the currently displayed image based on the first scaling, the method further comprises:
in the case where the first zoom ratio is greater than a fifth predetermined zoom ratio, replacing a currently displayed image having a first resolution with a first displayed image having a second resolution, the second resolution being higher than the first resolution; and
generating a scaled display image to be displayed on the touch display screen based on the first display image.
7. An image processing apparatus comprising:
the first screen touch information acquisition module is used for acquiring first screen touch information on a touch display screen, wherein the first screen touch information comprises information corresponding to a zooming gesture;
a current zoom ratio determination module for determining a current zoom ratio of a current display image displayed on the touch display screen;
a first scaling determination module, configured to determine a first scaling based on the information corresponding to the scaling gesture and the current scaling; and
a generating module to scale the current display image based on the first scaling to generate a scaled display image to be displayed on the touch display screen,
wherein the currently displayed image is zoomed with a center of the touch display screen as a zoom center when the first zoom ratio does not exceed a first predetermined zoom ratio, and the currently displayed image is zoomed with a center corresponding to the zoom gesture as a zoom center when the first zoom ratio exceeds the first predetermined zoom ratio,
the information corresponding to the zooming gesture includes coordinates of two initial touch points before zooming on the touch display screen and coordinates of two zoomed touch points after zooming, and the first zooming ratio determination module is further configured to:
and determining the first scaling based on the coordinates of the two initial touch points, the coordinates of the two scaled touch points and the current scaling, wherein the first scaling represents a proportional relation between the scaled display image and an original display image, and the original display image is a display image which corresponds to the current display image and has a reference scaling.
8. The image processing apparatus of claim 7, wherein the first scaling module is further configured to:
acquiring the distance between the two initial touch points as a reference zooming distance based on the coordinates of the two initial touch points;
acquiring the distance between the two zoomed touch points as the zoomed distance based on the coordinates of the two zoomed touch points; and
determining the first scale based on the base scaling distance, the post-scaling distance, and the current scale.
9. The image processing apparatus according to claim 7, wherein before the generating means scales the currently displayed image, the apparatus further comprises a first position obtaining means for obtaining a current width, a current height, and a first position of the currently displayed image with respect to the touch display screen,
wherein the generation module is further configured to:
obtaining the width and the height of the zoomed display image and the second position of the zoomed display image relative to the touch display screen based on the current width and the current height of the current display image, the first position of the current display image relative to the touch display screen and the first zoom scale; and
displaying the scaled display image on the touch display screen based on the width, height, and the second position of the scaled display image.
10. The image processing apparatus of claim 9, the apparatus further comprising a home position acquisition module to acquire a home position of the original display image relative to the touch display screen, the home position comprising a first horizontal distance and a first vertical distance of an upper left corner of the original display image relative to an upper left corner of the touch display screen,
in the case that the first scaling is greater than a second predetermined scaling, the generation module is further configured to:
setting the distance of the left side of the zoomed display image to the left side of the touch display screen to a first horizontal distance in case the distance of the left side of the zoomed display image to the left side of the touch display screen exceeds the first horizontal distance,
setting the distance of the right side of the zoomed display image to the right side of the touch display screen to a first horizontal distance in case the distance of the right side of the zoomed display image to the right side of the touch display screen exceeds the first horizontal distance,
setting the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen to a first vertical distance in case the distance of the upper side of the zoomed display image relative to the upper side of the touch display screen exceeds the first vertical distance, an
Setting the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen to a first vertical distance in case the distance of the lower side of the zoomed display image relative to the lower side of the touch display screen exceeds the first vertical distance.
11. The image processing apparatus according to any of claims 7-10, wherein the generation module is configured to scale the scaled display image displayed on the touch display screen to a fourth predetermined scale for a predetermined period of time when the first scale exceeds a third predetermined scale.
12. The image processing apparatus according to any of claims 7-10, wherein, prior to scaling the currently displayed image based on the first scaling, the generation module is further configured to:
in the case where the first zoom ratio is greater than a fifth predetermined zoom ratio, replacing a currently displayed image having a first resolution with a first displayed image having a second resolution, the second resolution being higher than the first resolution; and
generating a scaled display image to be displayed on the touch display screen based on the first display image.
13. An image processing apparatus, the apparatus comprising:
a processor; and
a memory having computer-readable program instructions stored therein,
wherein the computer-readable program instructions, when executed by the processor, perform the method of any of claims 1-6.
14. A computer readable storage medium for storing computer readable instructions which, when executed by a computer, cause the computer to perform the method of any one of claims 1-6.
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