CN117270747A - Handwriting erasing method and device, electronic equipment and storage medium - Google Patents
Handwriting erasing method and device, electronic equipment and storage medium Download PDFInfo
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- CN117270747A CN117270747A CN202311272144.8A CN202311272144A CN117270747A CN 117270747 A CN117270747 A CN 117270747A CN 202311272144 A CN202311272144 A CN 202311272144A CN 117270747 A CN117270747 A CN 117270747A
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- 238000004590 computer program Methods 0.000 claims description 16
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000004422 calculation algorithm Methods 0.000 abstract description 15
- 238000004891 communication Methods 0.000 description 2
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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]
- G06F3/0487—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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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Abstract
The invention provides a handwriting erasing method, a handwriting erasing device, electronic equipment and a storage medium, wherein an erasing area and a handwriting area are obtained, and handwriting nodes which are not in the erasing area are added into a preset handwriting set when an intersection area exists between the erasing area and the handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not completely fall into the erasing area; deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting. The original handwriting is not required to be cut for multiple times, the image processing interface is not required to be called for multiple times to obtain the intersecting region, a large amount of operation time is reduced, excessive system resources are avoided being occupied, the operation efficiency of an erasure algorithm is improved, and the use experience of a user is further effectively improved.
Description
Technical Field
The present invention relates to the field of handwriting input technologies, and in particular, to a handwriting erasing method, apparatus, electronic device, and storage medium.
Background
The conventional handwriting erasing algorithm generally obtains the intersection area of the circumscribed rectangle of the handwriting and the erasing area by calling an image processing interface, calculates whether the intersection area is intersected, divides the handwriting into two symmetrical parts of handwriting, respectively calls the image processing interface to obtain the intersection area of the two parts of handwriting and the erasing area, calculates whether the two parts of handwriting still intersect with the erasing area, continues to split if the two parts of handwriting intersect with the erasing area, until the handwriting area which does not intersect with the erasing area is split, and finally takes the handwriting in each handwriting area which does not intersect with the erasing area as the erased handwriting.
However, the method has some defects that firstly, when in operation, an image processing interface needs to be called for multiple times to judge whether an intersected region exists, so that computational resources are very consumed, the time for acquiring the algorithm of the intersected region is long, and further, the method also needs to cut and split handwriting for multiple times, and the time for splitting the algorithm of the handwriting is long. Through statistics, if one thousand handwriting exists on the screen, the existing erasing algorithm is used for erasing, the required operation time is about 2 seconds, the efficiency is extremely low, and the use experience of a user is very influenced.
Disclosure of Invention
The embodiment of the invention provides a handwriting erasing method, a handwriting erasing device, electronic equipment and a storage medium, which can effectively improve the operation efficiency of an erasing algorithm and further effectively improve the use experience of a user.
An embodiment of the present invention provides a handwriting erasing method, including:
acquiring an erasing area and a handwriting area of handwriting to be erased;
when determining that an intersection area exists between the erasure area and a handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not fall into the erasure area completely, adding the handwriting nodes which are not in the erasure area into a preset handwriting set;
deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting.
Further, the acquiring the erasing area and the handwriting area of the handwriting to be erased includes:
generating an external rectangle of the moving area according to the moving area of the erasing action to obtain the erasing area;
and generating an external matrix of the handwriting to be erased according to the handwriting nodes of the handwriting to be erased, and obtaining the handwriting area.
Further, the handwriting erasing method further comprises the following steps:
and when the intersection area does not exist between the erasing area and the handwriting area of the handwriting to be erased, determining that the handwriting to be erased does not need to be erased.
Further, the handwriting erasing method further comprises the following steps:
and when determining that an intersection area exists between the erasure area and the handwriting area of the handwriting to be erased, and no handwriting node of the handwriting to be erased exists in the intersection area, determining that the handwriting to be erased does not need to be erased.
Further, the handwriting erasing method further comprises the following steps:
and deleting all original handwriting nodes of the handwriting to be erased when the intersection area exists between the erasing area and the handwriting area of the handwriting to be erased and the handwriting area completely falls into the erasing area.
Further, the adding the handwriting node which is not in the erasing area to the preset handwriting set includes:
extracting a plurality of interval handwriting nodes from the handwriting to be erased according to a preset distance interval;
when each interval handwriting node is extracted, judging whether the extracted interval handwriting node is in an erasure area or not;
if not, reading a preset numerical value of the first mark; when the value of the first mark is determined to be an initial value, taking the currently extracted handwriting node as a first mark node, and changing the value of the first mark; when the numerical value of the first mark is determined not to be the initial value, extracting a next interval handwriting node;
if yes, taking the currently extracted interval handwriting node as a second mark node, adding all handwriting nodes between the first mark node and the second mark node in the handwriting to be erased to a preset handwriting set, and then resetting the value of the first mark as an initial value.
Another embodiment of the present invention provides a handwriting erasing apparatus, including:
the region acquisition module is used for acquiring an erasing region and a handwriting region of handwriting to be erased;
the handwriting set generation module is used for adding handwriting nodes which are not in the erasing area into a preset handwriting set when the fact that the intersection area exists between the erasing area and the handwriting area of the handwriting to be erased and handwriting nodes of the handwriting to be erased exist in the intersection area and the handwriting area does not completely fall into the erasing area is determined;
the handwriting erasing generating module is used for deleting all original handwriting nodes of the handwriting to be erased, rendering according to the handwriting nodes in the handwriting set and generating erased handwriting.
Another embodiment of the present invention correspondingly provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements the method for erasing handwriting according to the embodiment of the present invention when executing the computer program.
Another embodiment of the present invention correspondingly provides a storage medium, where the storage medium includes a stored computer program, and when the computer program runs, the device where the storage medium is controlled to execute an erasing method for handwriting according to the embodiment of the present invention.
The invention has the following beneficial effects:
the invention provides a handwriting erasing method, a handwriting erasing device, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining an erasing area and a handwriting area, and adding handwriting nodes which are not in the erasing area into a preset handwriting set when an intersection area exists between the erasing area and the handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not completely fall into the erasing area; deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting. The original handwriting is not required to be cut for multiple times, the image processing interface is not required to be called for multiple times to obtain the intersecting region, a large amount of operation time is reduced, excessive system resources are avoided being occupied, the operation efficiency of an erasure algorithm is improved, and the use experience of a user is further effectively improved.
Drawings
Fig. 1 is a flowchart of a handwriting erasing method according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an handwriting erasing apparatus according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a flowchart of a handwriting erasing method according to an embodiment of the present invention includes:
s1, acquiring an erasing area and a handwriting area of handwriting to be erased;
in one embodiment of the invention, handwriting area of handwriting to be erased is obtained by recognizing handwriting of a user on a screen device through the writing screen device; and identifying the erasing operation of the user on the screen device through the writing screen device, and acquiring an erasing area. The handwriting area of the handwriting to be erased is obtained through handwriting on the writing screen device;
preferably, generating an external rectangle of the moving area according to the moving area of the erasing action to obtain the erasing area;
and generating an external matrix of the handwriting to be erased according to the handwriting nodes of the handwriting to be erased, and obtaining the handwriting area.
In an embodiment of the present invention, a circumscribed rectangle of a moving area is generated according to the moving area of an erasing action through a preset image processing interface, so as to obtain the erasing area; and generating an external matrix of the handwriting to be erased according to the handwriting nodes of the handwriting to be erased through the image processing interface, so as to obtain the handwriting area. Preferably, the image processing interface is a Region object.
S2, when an intersection area exists between the erasure area and a handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not fall into the erasure area completely, adding the handwriting nodes which are not in the erasure area into a preset handwriting set;
in an embodiment of the present invention, when it is determined that an intersection area exists between the erasing area and a handwriting area of the handwriting to be erased, an intersection area between the erasing area and the handwriting area of the handwriting to be erased is obtained through a preset image processing interface, and it is further determined whether a handwriting node of the handwriting to be erased exists in the intersection area, and it is also determined whether the handwriting area completely falls into the erasing area. When determining that an intersection area exists between the erasure area and a handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not fall into the erasure area completely, adding the handwriting nodes which are not in the erasure area into a preset handwriting set;
preferably, when it is determined that the intersection area does not exist between the erasing area and the handwriting area of the handwriting to be erased, it is determined that the handwriting to be erased does not need to be erased.
Preferably, when it is determined that an intersection area exists between the erasing area and a handwriting area of the handwriting to be erased, but no handwriting node of the handwriting to be erased exists in the intersection area, it is determined that the handwriting to be erased does not need to be erased.
It can be understood that the erasing area and the handwriting area are respectively an external matrix of the erasing path and an external matrix of the handwriting to be erased, and there may be a situation that the two external matrices intersect, but the handwriting to be erased does not intersect with the erasing path, so that it is necessary to further determine whether there is a handwriting node of the handwriting to be erased in the intersecting area, and if not, it is directly determined that the handwriting to be erased does not need to be erased. The operation efficiency of the erasure algorithm is further improved.
Preferably, when it is determined that an intersection area exists between the erasing area and a handwriting area of the handwriting to be erased and the handwriting area completely falls into the erasing area, deleting all original handwriting nodes of the handwriting to be erased.
In an embodiment of the present invention, coordinate positions of four vertices of the handwriting area are obtained, and whether the four vertices are located in the erasing area is determined, if yes, it is indicated that the handwriting to be erased is erased, and then all original handwriting nodes of the handwriting to be erased are directly deleted. The operation efficiency of the erasure algorithm is further improved.
Preferably, the adding the handwriting node that is not in the erasing area to the preset handwriting set includes:
extracting a plurality of interval handwriting nodes from the handwriting to be erased according to a preset distance interval;
in an embodiment of the present invention, according to a preset distance interval, the interval handwriting nodes are extracted one by one from the first handwriting node of the handwriting to be erased; preferably, the handwriting node is a plurality of pixel points forming the handwriting to be erased, and the distance interval is set to be 1 pixel unit. It will be appreciated that by increasing the distance interval, the operational efficiency of the erasure algorithm is improved, but correspondingly, the accuracy of the erasure algorithm identification is sacrificed.
When each interval handwriting node is extracted, judging whether the extracted interval handwriting node is in an erasure area or not;
in one embodiment of the present invention, by determining coordinates of the currently extracted interval handwriting node, it is determined whether the extracted interval handwriting node is within an erasure area.
If not, reading a preset numerical value of the first mark; when the value of the first mark is determined to be an initial value, taking the currently extracted handwriting node as a first mark node, and changing the value of the first mark; when the numerical value of the first mark is determined not to be the initial value, extracting a next interval handwriting node;
in an embodiment of the present invention, when it is identified that the currently extracted interval handwriting node is not located in the erasing area, whether the currently extracted interval handwriting node is the first handwriting node of a section of handwriting that is not currently erased is confirmed through a preset first identifier.
When the first mark is an initial value, when the current extracted interval handwriting node is the first handwriting node of a section of handwriting which is not erased currently, the current extracted interval handwriting node is used as a first mark node, and the numerical value of the first mark is changed; and when the first mark is not an initial value, and the currently extracted interval handwriting node is not the first handwriting node of a section of handwriting which is not erased currently, then continuing to extract the next interval handwriting node.
If yes, taking the currently extracted interval handwriting node as a second mark node, adding all handwriting nodes between the first mark node and the second mark node in the handwriting to be erased to a preset handwriting set, and then resetting the value of the first mark as an initial value;
in an embodiment of the present invention, when it is identified that the currently extracted interval handwriting node is located in the erasing area, the currently extracted interval handwriting node is used as a second mark node, all handwriting nodes located between the first mark node and the second mark node in the handwriting to be erased are used as a section of non-erased handwriting to be added into a preset handwriting set, and then the numerical value of the first mark is reset to be an initial value. It will be appreciated that if the next extracted alternate script node is not located within the erase region, then the next extracted alternate script node is the first script node of the next segment of script that is not erased.
According to the method, handwriting nodes of the handwriting to be erased are extracted one by one according to the preset distance interval, and each small section of handwriting which is not erased in the handwriting to be erased is determined. Avoiding the adoption of a plurality of handwriting clipping algorithms, avoiding the acquisition of intersection areas by calling the image processing interface for a plurality of times, reducing a great amount of operation time, effectively improving the operation efficiency of an erasure algorithm,
and S3, deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting.
In one embodiment of the invention, the finally erased handwriting is generated by replacing all handwriting nodes in the handwriting set with all original handwriting nodes of the original handwriting to be erased.
The invention provides an erasing method of handwriting, which comprises the steps of obtaining an erasing area and a handwriting area, and adding handwriting nodes which are not in the erasing area into a preset handwriting set when determining that an intersecting area exists between the erasing area and the handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersecting area and the handwriting area does not completely fall into the erasing area; deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting. The original handwriting is not required to be cut for multiple times, the image processing interface is not required to be called for multiple times to obtain the intersecting region, a large amount of operation time is reduced, excessive system resources are avoided being occupied, the operation efficiency of an erasure algorithm is improved, and the use experience of a user is further effectively improved.
Referring to fig. 2, a schematic structural diagram of a handwriting erasing apparatus according to an embodiment of the present invention includes:
the region acquisition module is used for acquiring an erasing region and a handwriting region of handwriting to be erased;
the handwriting set generation module is used for adding handwriting nodes which are not in the erasing area into a preset handwriting set when the fact that the intersection area exists between the erasing area and the handwriting area of the handwriting to be erased and handwriting nodes of the handwriting to be erased exist in the intersection area and the handwriting area does not completely fall into the erasing area is determined;
the handwriting erasing generating module is used for deleting all original handwriting nodes of the handwriting to be erased, rendering according to the handwriting nodes in the handwriting set and generating erased handwriting.
The invention provides an erasing device for handwriting, which is characterized in that an erasing area and a handwriting area are obtained, and handwriting nodes which are not in the erasing area are added into a preset handwriting set when an intersection area exists between the erasing area and the handwriting area to be erased, handwriting nodes which are in the intersection area to be erased and the handwriting area does not fall into the erasing area completely; deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting. The original handwriting is not required to be cut for multiple times, the image processing interface is not required to be called for multiple times to obtain the intersecting region, a large amount of operation time is reduced, excessive system resources are avoided being occupied, the operation efficiency of an erasure algorithm is improved, and the use experience of a user is further effectively improved.
The invention provides an electronic device comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the steps of the method embodiments described above when executing the computer program.
It should be noted that the above-described apparatus embodiments are merely illustrative, and the units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the invention, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
It will be clear to those skilled in the art that, for convenience and brevity, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
The electronic device may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, and the like. The electronic device may include, but is not limited to, a processor, a memory.
The processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like that is a control center of the electronic device, connecting various parts of the overall electronic device using various interfaces and lines.
The memory may be used to store the computer program, and the processor may implement various functions of the electronic device by running or executing the computer program stored in the memory, and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the cellular phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
The present invention provides a storage medium which is a computer readable storage medium, in which a computer program is stored which, when being executed by a processor, implements the steps of the various method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (9)
1. A method of erasing writing, comprising:
acquiring an erasing area and a handwriting area of handwriting to be erased;
when determining that an intersection area exists between the erasure area and a handwriting area of the handwriting to be erased, handwriting nodes of the handwriting to be erased exist in the intersection area, and the handwriting area does not fall into the erasure area completely, adding the handwriting nodes which are not in the erasure area into a preset handwriting set;
deleting all original handwriting nodes of the handwriting to be erased, and rendering according to the handwriting nodes in the handwriting set to generate erased handwriting.
2. The method of erasing writing as claimed in claim 1, wherein the acquiring the erasing area and the writing area of writing to be erased includes:
generating an external rectangle of the moving area according to the moving area of the erasing action to obtain the erasing area;
and generating an external matrix of the handwriting to be erased according to the handwriting nodes of the handwriting to be erased, and obtaining the handwriting area.
3. A method of erasing writing as recited in claim 2, further comprising:
and when the intersection area does not exist between the erasing area and the handwriting area of the handwriting to be erased, determining that the handwriting to be erased does not need to be erased.
4. A method of erasing writing as claimed in claim 3, further comprising:
and when determining that an intersection area exists between the erasure area and the handwriting area of the handwriting to be erased, and no handwriting node of the handwriting to be erased exists in the intersection area, determining that the handwriting to be erased does not need to be erased.
5. A method of erasing writing as recited in claim 4, further comprising:
and deleting all original handwriting nodes of the handwriting to be erased when the intersection area exists between the erasing area and the handwriting area of the handwriting to be erased and the handwriting area completely falls into the erasing area.
6. The method of claim 5, wherein adding the handwriting nodes not in the erasing area to the preset handwriting set comprises:
extracting a plurality of interval handwriting nodes from the handwriting to be erased according to a preset distance interval;
when each interval handwriting node is extracted, judging whether the extracted interval handwriting node is in an erasure area or not;
if not, reading a preset numerical value of the first mark; when the value of the first mark is determined to be an initial value, taking the currently extracted handwriting node as a first mark node, and changing the value of the first mark; when the numerical value of the first mark is determined not to be the initial value, extracting a next interval handwriting node;
if yes, taking the currently extracted interval handwriting node as a second mark node, adding all handwriting nodes between the first mark node and the second mark node in the handwriting to be erased to a preset handwriting set, and then resetting the value of the first mark as an initial value.
7. A handwriting erasing apparatus, comprising:
the region acquisition module is used for acquiring an erasing region and a handwriting region of handwriting to be erased;
the handwriting set generation module is used for adding handwriting nodes which are not in the erasing area into a preset handwriting set when the fact that the intersection area exists between the erasing area and the handwriting area of the handwriting to be erased and handwriting nodes of the handwriting to be erased exist in the intersection area and the handwriting area does not completely fall into the erasing area is determined;
the handwriting erasing generating module is used for deleting all original handwriting nodes of the handwriting to be erased, rendering according to the handwriting nodes in the handwriting set and generating erased handwriting.
8. An electronic device comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing a method of erasing handwriting according to any one of claims 1 to 6 when the computer program is executed.
9. A storage medium comprising a stored computer program, wherein the computer program, when run, controls a device in which the storage medium is located to perform a method of erasing writing according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272144.8A CN117270747A (en) | 2023-09-28 | 2023-09-28 | Handwriting erasing method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272144.8A CN117270747A (en) | 2023-09-28 | 2023-09-28 | Handwriting erasing method and device, electronic equipment and storage medium |
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| Publication Number | Publication Date |
|---|---|
| CN117270747A true CN117270747A (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311272144.8A Pending CN117270747A (en) | 2023-09-28 | 2023-09-28 | Handwriting erasing method and device, electronic equipment and storage medium |
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| Country | Link |
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| CN (1) | CN117270747A (en) |
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- 2023-09-28 CN CN202311272144.8A patent/CN117270747A/en active Pending
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