CN112669403A - Image generation method and device for handwritten signature, terminal equipment and storage medium - Google Patents
Image generation method and device for handwritten signature, terminal equipment and storage medium Download PDFInfo
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Abstract
The invention discloses an image generation method, a device, terminal equipment and a storage medium of a handwritten signature, wherein the method mainly comprises the following steps: creating a canvas object and generating a handwriting input area on the canvas object to receive a signature input; acquiring a currently input signature track according to signature input of a user on a handwriting input area, and continuously recording track coordinates of a currently drawn signature; when the signature input is finished, generating a signature track graph according to all recorded track coordinates; and synthesizing the signature track graph and the signature background graph to generate a handwritten signature image. The scheme of the invention can realize the generation of the on-line handwritten signature, meet the signature requirement which is increased by the development and innovation of the on-line business in the financial industry, replace the traditional paper signature mode, and lead the signature to be stored efficiently and be convenient for the circulation of the business. In addition, when the handwritten signature is carried out, the track of the handwritten signature is played back and displayed in real time so as to meet the requirements of compliance and supervision.
Description
Technical Field
The present invention relates to the field of handwritten signatures, and in particular, to a method and an apparatus for generating an image of a handwritten signature, a terminal device, and a storage medium.
Background
Nowadays, the economy flourishes and develops rapidly, and a large number of business businesses, government administration works and personal performances all need to carry out name signing on some important documents. Names not only represent attributes of an individual person, but also have legal effectiveness. Meanwhile, the current name signing process exists in an infinite number of scenes, and various complicated name signing scenes enable the signature process to have the characteristics of convenience and convenience in storage.
For the existing signature mode, the traditional signature method relies on paper files to carry out circulation signature and stores the paper files through an entity folder and a file box. The traditional signature process cannot meet the requirements of efficient and safe signature along with the rapid increase of the traffic and the increase of more complex service scenes. At present, with the development of internet application, the remote business handling of government and enterprise becomes a mainstream business scene. For the financial industry, remote services of the financial industry are continuously developing and innovated, such as remote approval of credit services, remote development of project construction and the like, so that the demand of online handwritten signatures is continuously increased. Meanwhile, the paper documents of the business are not easy to store, and the risk of failure of the signature documents caused by human factors exists, even huge contract loss is caused. Therefore, a method for inputting a handwritten signature and generating the handwritten signature is needed for realizing the document signature, so that the signature flow is simplified, the document signature efficiency is improved, the signature is stored more efficiently, and the defects caused by a paper signature mode are overcome.
Disclosure of Invention
The embodiment of the invention provides an image generation method and device of a handwritten signature, terminal equipment and a storage medium, which can improve the generation speed and efficiency of the handwritten signature, thereby improving the efficiency and convenience of signature flow and business approval.
The embodiment of the invention provides an image generation method of a handwritten signature, which comprises the following steps:
creating a canvas object and generating a handwriting input area on the canvas object to receive a signature input;
acquiring a currently input signature track according to the signature input of a user on the handwriting input area, and continuously recording track coordinates of a currently drawn signature;
when the signature input is confirmed to be finished, generating a signature track graph according to all recorded track coordinates;
and synthesizing the signature track graph and a preset signature background graph to generate a handwritten signature image simultaneously with the signature track graph and the signature background graph.
Further, after the generating a handwritten signature image with the signature trace map and the signature background map, the method further includes:
and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of a local system, and storing the handwritten signature file on a local storage device.
Further, the acquiring a currently input signature track according to the signature input of the user on the handwriting input area, and continuously recording track coordinates of the currently drawn signature specifically includes:
the method comprises the steps of continuously acquiring a touch signal of a currently input signature track through a touch call-back method for monitoring a screen touch event, and calculating a coordinate value of the currently input signature track according to the touch signal, so as to continuously record a track coordinate of a currently drawn signature.
Further, after the obtaining of the currently input signature track, the method further includes:
and drawing the currently input signature track on the canvas object through a drawing API so as to generate a signature track playback diagram.
Correspondingly, an embodiment of the present invention further provides an image generating apparatus for a handwritten signature, including: the device comprises an area input unit, a track recording unit, a drawing judgment unit and a signature graph generation unit.
The area input unit is used for creating a canvas object and generating a handwriting input area on the canvas object so as to receive signature input;
the track recording unit is used for acquiring a currently input signature track according to the signature input of a user on the handwriting input area and continuously recording track coordinates of a currently drawn signature;
the drawing judgment unit is used for generating a signature track graph according to all recorded track coordinates when the signature input is confirmed to be finished;
the signature graph generating unit is used for synthesizing the signature track graph and a preset signature background graph to generate a handwritten signature image simultaneously with the signature track graph and the signature background graph.
Further, after the generating a handwritten signature image with the signature trace map and the signature background map, the method further includes:
and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of a local system, and storing the handwritten signature file on a local storage device.
Further, the track recording unit further comprises a screen monitoring unit;
the method comprises the steps of continuously acquiring a touch signal of a currently input signature track through a touch call-back method for monitoring a screen touch event, and calculating a coordinate value of the currently input signature track according to the touch signal, so as to continuously record a track coordinate of a currently drawn signature.
Further, after the obtaining of the currently input signature track, the method further includes:
and drawing the currently input signature track on the canvas object through a drawing API so as to generate a signature track playback diagram.
Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program; wherein the computer program, when running, controls an apparatus on which the computer-readable storage medium is located to perform the image generation method of a handwritten signature as described above.
Accordingly, an embodiment of the present invention further provides a terminal device, which is characterized by comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the image generation method of the handwritten signature as described above when executing the computer program.
The embodiment of the invention has the following beneficial effects:
according to the image generation method, the image generation device, the terminal equipment and the storage medium of the handwritten signature, track coordinates of the signature which is currently drawn are continuously recorded according to the signature input by a user in a handwritten input area, and a signature track graph is drawn after the drawing is finished; and synthesizing the signature track graph and a preset background graph to generate a handwritten signature image with the signature track graph and the preset background graph. Compared with the prior art that the signature is carried out through the paper file, the technical scheme of the invention can efficiently and conveniently realize the generation of the handwritten signature, has concise signature flow and wide applicability, and improves the generation speed and efficiency of the handwritten signature.
Furthermore, the technical scheme of the invention can also realize the electronic storage of the signature by converting the synthesized handwritten signature image with the signature track graph and the signature background graph into a file and then storing the file, thereby improving the storage timeliness of the signature and the reusability of the signature and further improving the signature efficiency.
Drawings
FIG. 1 is a flow chart illustrating a method for generating an image of a handwritten signature according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of an image generation device for a handwritten signature provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of an embodiment of an image generation method for a handwritten signature provided by the present invention. The image generation method of the handwritten signature of the embodiment is suitable for terminal equipment with an android system. As shown in fig. 1, the method includes the following steps 101 to 104, and each step is specifically as follows:
step 101: a canvas object is created and a handwriting input area is generated on the canvas object to receive signature input.
In this embodiment, the signature input device is preferably a mobile terminal device based on the android system. According to the signature input device, a signature function icon is clicked on a touch screen of the device, a brush object is created, an input function is started, meanwhile, a canvas is created, a handwriting area is generated, and a user can draw a signature in the handwriting area. The virtual input brush pen is mainly provided for a user, meanwhile, the virtual input brush pen can be set, the color and the style of the brush pen, how to draw geometric figures, texts and bitmaps, the style and the color change and other items can be set, the settings are stored, and the set effect is reflected when the user draws a signature. Meanwhile, the canvas is used for drawing a user-defined view, and the editing range is divided in the screen window of the equipment, so that the subsequent signature is drawn. And, through the API of the operation canvas, for example, the operation of converting the canvas such as rotating and clipping, etc., the customizable complex graph can be skillfully drawn.
Step 102: and acquiring a currently input signature track according to the signature input of the user on the handwriting input area, and continuously recording track coordinates of the currently drawn signature.
In this embodiment, step 102 is specifically to continuously obtain a touch signal of a currently input signature track by a touch callback method for monitoring a screen touch event, and calculate a coordinate value of the currently input signature track according to the touch signal, so as to continuously record a track coordinate of a currently drawn signature. The signature input device based on the mobile terminal of the android system can continuously receive a signature track transmitted by a handwriting input area, a touch screen of the device transmits an electric signal of a signature track point to a processor of the device in real time, and the position of the electric signal point of the current track is obtained by combining with touch event. And the device forms track coordinate information of the drawn signature by continuously storing the coordinates of the track points.
As another example of this embodiment, after acquiring the currently input signature track, the method further includes: and drawing the currently input signature track on the canvas object through the drawing API so as to generate a signature track playback diagram.
In this embodiment, the signature trajectory is rendered in the canvas object in real time in conjunction with the style settings of the brush and the canvas. The generated signature track playback graph can be displayed on a screen in real time, so that a user can conveniently see the situation of the signature pattern drawn by the user in real time.
Step 103: and when the signature input is confirmed to be finished, generating a signature track graph according to all track coordinates recorded.
In this embodiment, the user may touch the determination key, and the system executes step 103 after obtaining the signal that the drawing has been completed; if the user does not click the confirm button, the step 102 is continuously executed, and new track information is continuously saved. And when the step 103 is executed, drawing the track coordinate information of all the drawn signatures into a signature track graph. The canvas and the drawpath graph are used for drawing a path graph described by the track coordinates in the canvas.
Step 104: and synthesizing the signature track graph and a preset signature background graph to generate a handwritten signature image with the signature track graph and the signature background graph simultaneously.
In this embodiment, the application program interface of the signature input device that combines the signature background map and the drawn signature trajectory map is canvas. And drawing the track to a signature background image by transmitting the width and height of the signature track image and the bitmap object to the interface, and realizing the synthesis of the signature and the background image so as to generate the handwritten signature.
As another example in this embodiment, after generating a handwritten signature image with both a signature trace map and a signature background map, the method further includes: and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of the local system, and storing the handwritten signature file on a local storage device.
In this embodiment, the generated handwritten signature may also be converted into a file through an android system API of the device and stored, and the synthesized handwritten signature image is converted into a handwritten signature file through a read-write API that calls a system file stream of the device, and the converted handwritten signature file is stored in the local storage device. Preferably, a read-write application program interface of a FileOutputStream file stream, preferably a bitmap () application program interface, is used, and a signature image file is generated and stored locally through an incoming file path and a bitmap object.
Further, on the basis of the steps of the foregoing embodiment, the steps can also be operated in an embedded device in a movable or fixed form.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of an image generation apparatus for a handwritten signature according to an embodiment of the present invention. As shown in fig. 2, the apparatus includes: an area input unit 201, a trajectory recording unit 202, a drawing judgment unit 203, and a signature map generation unit 204;
the area input unit 201 is used to create a canvas object and generate a handwriting input area on the canvas object to receive a signature input.
The track recording unit 202 is configured to obtain a currently input signature track according to a signature input by a user on a handwriting input area, and continuously record track coordinates of a currently drawn signature.
The drawing judgment unit 203 is used for generating a signature track map according to all track coordinates recorded when the signature input is confirmed to be finished.
The signature graph generating unit 204 is configured to combine the signature trace graph with a preset signature background graph, and generate a handwritten signature image with both the signature trace graph and the signature background graph.
The track recording unit 202 further includes a screen listening unit; the screen monitoring unit is used for continuously acquiring the touch signal of the currently input signature track through a touch call-back method for monitoring the screen touch event, and calculating the coordinate value of the currently input signature track according to the touch signal, so as to continuously record the track coordinate of the currently drawn signature.
After generating a hand-written signature image with a signature track graph and a signature background graph, the method further comprises the following steps: and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of the local system, and storing the handwritten signature file on a local storage device.
The more detailed steps and principles in the present embodiment can be, but are not limited to, see the related description of the steps as described above.
Accordingly, an embodiment of the present invention provides a computer-readable storage medium, which includes a stored computer program; wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the image generation method of a handwritten signature as described above.
Accordingly, an embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the image generation method of a handwritten signature of the above-described embodiment when executing the computer program.
As can be seen from the above, according to the image generation method, device, terminal device and storage medium for a handwritten signature provided in the embodiments of the present invention, track coordinates of a signature currently being drawn are continuously recorded according to a signature input by a user in a handwriting input area, and a signature track map is drawn after drawing is completed; and synthesizing the signature track graph and a preset background graph to generate a handwritten signature image with the signature track graph and the preset background graph. Compared with the prior art that the signature is carried out through the paper file, the technical scheme of the invention can efficiently and conveniently realize the generation of the handwritten signature, has concise signature flow and wide applicability, and improves the generation speed and efficiency of the handwritten signature.
Furthermore, the technical scheme of the invention can also realize the electronic storage of the signature by converting the synthesized handwritten signature image with the signature track graph and the signature background graph into a file and then storing the file, thereby improving the storage timeliness of the signature and the reusability of the signature and further improving the signature efficiency.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. An image generation method for a handwritten signature, comprising:
creating a canvas object and generating a handwriting input area on the canvas object to receive a signature input;
acquiring a currently input signature track according to the signature input of a user on the handwriting input area, and continuously recording track coordinates of a currently drawn signature;
when the signature input is confirmed to be finished, generating a signature track graph according to all recorded track coordinates;
and synthesizing the signature track graph and a preset signature background graph to generate a handwritten signature image simultaneously with the signature track graph and the signature background graph.
2. The method for generating an image of a handwritten signature according to claim 1, further comprising, after said generating a handwritten signature image with said signature trace map and said signature background map, the steps of:
and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of a local system, and storing the handwritten signature file on a local storage device.
3. The method for generating an image of a handwritten signature according to claim 1, wherein the step of obtaining a currently input signature track according to a signature input of a user on the handwriting input area and continuously recording track coordinates of a currently drawn signature includes:
the method comprises the steps of continuously acquiring a touch signal of a currently input signature track through a touch call-back method for monitoring a screen touch event, and calculating a coordinate value of the currently input signature track according to the touch signal, so as to continuously record a track coordinate of a currently drawn signature.
4. The method for generating an image of a handwritten signature according to claim 1, further comprising, after said obtaining a currently input signature trajectory:
and drawing the currently input signature track on the canvas object through a drawing API so as to generate a signature track playback diagram.
5. An image generating apparatus for a handwritten signature, comprising: the device comprises an area input unit, a track recording unit, a drawing judgment unit and a signature graph generation unit;
the area input unit is used for creating a canvas object and generating a handwriting input area on the canvas object so as to receive signature input;
the track recording unit is used for acquiring a currently input signature track according to the signature input of a user on the handwriting input area and continuously recording track coordinates of a currently drawn signature;
the drawing judgment unit is used for generating a signature track graph according to all recorded track coordinates when the signature input is confirmed to be finished;
the signature graph generating unit is used for synthesizing the signature track graph and a preset signature background graph to generate a handwritten signature image simultaneously with the signature track graph and the signature background graph.
6. The apparatus for generating a handwritten signature image according to claim 5, further comprising, after said generating a handwritten signature image with said signature trace map and said signature background map, the steps of:
and converting the handwritten signature image into a handwritten signature file by calling a read-write API of a file stream of a local system, and storing the handwritten signature file on a local storage device.
7. The image generation apparatus of a handwritten signature according to claim 5, characterized in that said trajectory recording unit further includes a screen listening unit;
the method comprises the steps of continuously acquiring a touch signal of a currently input signature track through a touch call-back method for monitoring a screen touch event, and calculating a coordinate value of the currently input signature track according to the touch signal, so as to continuously record a track coordinate of a currently drawn signature.
8. The apparatus for generating an image of a handwritten signature according to claim 5, further comprising, after said acquiring a currently input signature trajectory:
and drawing the currently input signature track on the canvas object through a drawing API so as to generate a signature track playback diagram.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored computer program; wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the image generation method of a handwritten signature of any of claims 1 to 4.
10. A terminal 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 image generation method of a handwritten signature as claimed in any of claims 1 to 4 when executing the computer program.
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