CN113347365A - Triggering acquisition method of image sensor and image acquisition equipment - Google Patents
Triggering acquisition method of image sensor and image acquisition equipment Download PDFInfo
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- CN113347365A CN113347365A CN202110893703.1A CN202110893703A CN113347365A CN 113347365 A CN113347365 A CN 113347365A CN 202110893703 A CN202110893703 A CN 202110893703A CN 113347365 A CN113347365 A CN 113347365A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
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Abstract
The application discloses a triggering acquisition method of an image sensor and image acquisition equipment. The method comprises the following steps: the method comprises the steps that a driver controls an image sensor to stop outputting a current image frame under the condition that a preset interrupt event notification of an FPGA chip is received, and configures parameters of the image sensor based on pre-stored configuration parameters, wherein the preset interrupt event notification is used for indicating the FPGA chip to generate a preset interrupt event based on a photographing instruction; and the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip, so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to a trigger acquisition method for an image sensor and an image acquisition device.
Background
Generally, the image acquisition device needs to use a high-end chip in an image sensor to realize the mapping of the trigger mode, and the cost is high. At present, for an image capturing device that does not support a triggered mode mapping, an image may be output in an Electronic Rolling Shutter (ERS) mode, and in the ERS mode, after the image sensor completes an initialization configuration, image data is continuously output line by line. When the back end needs to take the picture, the register of the image sensor is modified through the driving software of the image acquisition equipment, so that the image sensor outputs the picture corresponding to the current frame, and the effect of drawing the picture in the trigger mode is simulated. But the frame currently being output may start or may end immediately. If the current frame is output by the standing horse, the pictures received by the rear end are incomplete; if the current frame is output after finishing, the time point of receiving the picture at the rear end can be caused, and the time error of one frame of image is at most.
Disclosure of Invention
In order to solve the above problems, the present invention provides a trigger capture method of an image sensor and an image capture device, which can implement a trigger mode to produce images at low cost, and can ensure that the images output by the image capture device are complete and time-consuming and stable when the image capture device is triggered at the back end to capture images.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a trigger acquisition method of an image sensor, which is applied to an image acquisition apparatus, where the image acquisition apparatus includes: the image acquisition device comprises a processor, an FPGA chip and an image sensor, wherein the processor runs a driving program of the image acquisition device, and the method comprises the following steps:
the driving program controls the image sensor to stop outputting the current image frame under the condition that a preset interrupt event notification of the FPGA chip is received, and configures parameters of the image sensor based on pre-stored configuration parameters, wherein the preset interrupt event notification is used for indicating the FPGA chip to generate a preset interrupt event based on a photographing instruction; and
and the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
Preferably, the preset interrupt event notification includes an interrupt number of the preset interrupt event.
Preferably, the configuring, by the driver, the parameters of the image sensor based on the pre-stored configuration parameters includes: and the driving program judges whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters or not, and configures the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters.
Preferably, the method further comprises: and the driver does not configure the parameters of the image sensor under the condition that the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters.
Preferably, the controlling, by the driver, the image sensor to terminate the output of the current image frame includes: the driver configures a restart register of the image sensor to cause the image sensor to terminate output of a current image frame.
Preferably, the parameters of the image sensor include at least one of: exposure value, gain value, frame rate, contrast.
Preferably, the image sensor is an image sensor that does not support mapping in the trigger mode.
In a second aspect, an embodiment of the present invention provides an image capturing apparatus, including: the system comprises an FPGA chip, a processor and an image sensor, wherein the processor runs a driving program of the image acquisition equipment; wherein the content of the first and second substances,
the processor is used for controlling the image sensor to stop outputting the current image frame and configuring the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the driver is used for receiving the preset interrupt event notification of the FPGA chip, wherein the preset interrupt event notification is used for indicating the FPGA chip to generate the preset interrupt event based on the photographing instruction;
the processor is further configured to send an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip by using the driver, so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
Preferably, the preset interrupt event notification includes an interrupt number of the preset interrupt event.
Preferably, the configuring, by the processor, the parameters of the image sensor based on the pre-stored configuration parameters by using the driver includes: the processor judges whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters or not by using the driving program, and configures the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters.
Preferably, the processor is further configured to not configure the parameters of the image sensor by using the driver when the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters.
Preferably, the controlling, by the processor, the image sensor to terminate the output of the current image frame by using the driver includes: the processor configures a restart register of the image sensor using the driver to cause the image sensor to terminate output of a current image frame.
Preferably, the parameters of the image sensor include at least one of: exposure value, gain value, frame rate, contrast.
Preferably, the image sensor is an image sensor that does not support mapping in the trigger mode.
By using the triggering acquisition method of the image sensor and the image acquisition equipment provided by the invention, the FPGA chip and the driving program of the image acquisition equipment are combined for acquiring images to be plotted. Based on the method, the driver controls the image sensor to stop outputting the current image frame under the condition of receiving the preset interrupt event notice of the FPGA chip, and configures the parameters of the image sensor based on the pre-stored configuration parameters. And then, the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip, so that the FPGA chip ends the preset interrupt event and acquires the image frame from the image sensor. Therefore, even if the image acquisition device uses an image sensor which does not support the image drawing in the trigger mode, the image drawing in the trigger mode can be realized, so that the cost of the image acquisition device is reduced, and when the image acquisition device is triggered at the rear end to acquire the image, the image output by the image acquisition device is complete and consumes time stably.
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The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.
Fig. 1 is a schematic flowchart of a triggered acquisition method of an image sensor according to an exemplary embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an image capturing device according to an exemplary embodiment of the present application.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.
Fig. 1 is a schematic flowchart of a triggered acquisition method of an image sensor according to an embodiment of the present disclosure. The triggering acquisition method of the image sensor can be applied to image acquisition equipment.
In an embodiment of the present invention, an image capturing apparatus may include: the system comprises a processor, an FPGA chip and an image sensor. Wherein, the processor runs with the image acquisition equipment's driver. In one example, the image sensor may be an image sensor that does not support toggle mode mapping. Based on this, as shown in fig. 1, the triggered acquisition method of the image sensor provided by the embodiment of the present invention may include:
The preset interrupt event notification is used for instructing the FPGA chip to generate a preset interrupt event based on the photographing instruction, and specifically, the preset interrupt event notification may include an interrupt number of the preset interrupt event.
In one example, an interrupt event corresponding to a photographing instruction is preset in the FPGA chip, and based on this, after the FPGA chip receives the photographing instruction sent by a back end (e.g., a client or external hardware), a preset interrupt event is triggered based on the photographing instruction, that is, an interrupt signal of the preset interrupt event is generated.
And after receiving an interrupt signal of a preset interrupt event generated by the FPGA chip based on the photographing instruction, the driving program controls the image sensor to stop outputting the current image frame, and configures the parameters of the image sensor based on the pre-stored configuration parameters.
Preferably, the driver controls the image sensor to terminate the output of the current image frame, and may include: the driver configures a restart register of the image sensor to cause the image sensor to terminate output of the current image frame.
Preferably, the driver configures parameters of the image sensor based on pre-stored configuration parameters, and may include:
the driving program judges whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters or not, if the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters, the parameters of the image sensor are configured based on the pre-stored configuration parameters, and if the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters, the parameters of the image sensor are not configured.
Preferably, the parameters of the image sensor include at least one of: exposure value, gain value, frame rate, contrast.
Specifically, the parameter policy and the corresponding configuration parameter are stored in a storage medium of the image acquisition device, and can be configured manually or issued through a cloud. After receiving an interrupt signal of a preset interrupt event generated by the FPGA chip based on a photographing instruction, the driving program calls a parameter strategy and a corresponding configuration parameter from a storage medium to determine a parameter to be configured which needs to be configured for the image sensor currently, if the configuration parameter corresponding to the current image frame is different from the parameter to be configured, the parameter of the image sensor is configured based on the parameter to be configured, and if the configuration parameter corresponding to the current image frame is the same as the parameter to be configured, the parameter of the image sensor is not configured. Therefore, the switching of multiple sets of configuration parameters of the image sensor can be realized, and the requirements of different scenes can be met.
In a specific example, the storage medium may store a plurality of sets of parameters, and the parameter policy is specifically to use the plurality of sets of parameters in turn according to a preset sequence.
For example, the plurality of sets of parameters are divided into a parameter set 1, a parameter set 2, and a parameter set 3, and the parameter policy is to use the three sets of parameters in turn in the order of the parameter set 1, the parameter set 2, and the parameter set 3. If the software senses that the photographing event starts, the configuration parameter of the image sensor is the parameter group 2, the parameter group 3 is determined to be the parameter to be configured according to the parameter strategy in the embodiment, and then the image sensor is configured according to the parameter group 3 to be configured.
And step 102, the driver sends an interrupt event end notification corresponding to a preset interrupt event to the FPGA chip, so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
In one example, a delay time may be set according to a time required for the image sensor to process the capturing of one frame of picture, the delay time being not less than a time required for the image sensor to process the capturing of one frame of picture and less than 2 times a time required for the image sensor to process the capturing of one frame of picture. When the driver completes the configuration of the parameters of the image sensor, or when the configuration parameters corresponding to the current image frame are determined to be the same as the pre-stored configuration parameters, timing is started, and when the delay time is reached, an interrupt event end notification corresponding to a preset interrupt event is sent to the FPGA chip. When the FPGA chip receives an interrupt event end notification corresponding to a preset interrupt event, the preset interrupt event is ended, and an image frame is obtained from the image sensor, so that the image obtained from the image sensor by the FPGA chip is the first image frame collected by the image sensor according to the pre-stored configuration parameters. Then, the FPGA chip sends the first image frame to the back end that sends the photographing instruction in step 101, thereby completing the acquisition requirement of the back end.
By using the triggering acquisition method of the image sensor provided by the embodiment of the invention, the FPGA chip and the driving program of the image acquisition equipment are combined for acquiring the image to be plotted. Based on the method, the driver controls the image sensor to stop outputting the current image frame under the condition of receiving the preset interrupt event notice of the FPGA chip, and configures the parameters of the image sensor based on the pre-stored configuration parameters. And then, the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip, so that the FPGA chip ends the preset interrupt event and acquires the image frame from the image sensor. Therefore, even if the image acquisition device uses an image sensor which does not support the image drawing in the trigger mode, the image drawing in the trigger mode can be realized, so that the cost of the image acquisition device is reduced, and when the image acquisition device is triggered at the rear end to acquire the image, the image output by the image acquisition device is complete and consumes time stably.
An embodiment of the present invention provides an image capturing device, and fig. 2 is a schematic structural diagram of the image capturing device. The image acquisition device comprises at least: the system comprises an FPGA chip 201, a processor 202 and an image sensor 203, wherein the processor 202 runs a driving program 21 of the image acquisition equipment; wherein the content of the first and second substances,
the processor 202 is configured to control the image sensor 203 to terminate output of the current image frame and configure parameters of the image sensor 203 based on pre-stored configuration parameters, when receiving a preset interrupt event notification of the FPGA chip 201 by using the driver 21, where the preset interrupt event notification is used to instruct the FPGA chip 201 to generate a preset interrupt event based on a photographing instruction;
the processor 202 is further configured to send an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip 201 by using the driver 21, so that the FPGA chip 201 ends the preset interrupt event and acquires the image frame from the image sensor 203.
Preferably, the preset interrupt event notification includes an interrupt number of the preset interrupt event.
Preferably, the configuring, by the processor 202, the parameters of the image sensor 203 based on the pre-stored configuration parameters by using the driver 21 includes: the processor 202 determines whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters by using the driver 21, and configures the parameters of the image sensor 203 based on the pre-stored configuration parameters if the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters.
Preferably, the processor 202 is further configured to not configure the parameters of the image sensor 203 by using the driver 21 when the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters.
Preferably, the controlling, by the processor 202, the image sensor 203 to terminate the output of the current image frame by using the driver 21 includes: the processor 202 configures a restart register of the image sensor 203 using the driver 21 to cause the image sensor 203 to terminate the output of the current image frame.
Preferably, the parameters of the image sensor 203 include at least one of: exposure value, gain value, frame rate, contrast.
Preferably, the image sensor 203 is an image sensor that does not support the trigger mode mapping.
By using the image acquisition equipment provided by the invention, the FPGA chip and the driving program of the image acquisition equipment are combined for acquiring images to carry out plotting. Based on the method, the driver controls the image sensor to stop outputting the current image frame under the condition of receiving the preset interrupt event notice of the FPGA chip, and configures the parameters of the image sensor based on the pre-stored configuration parameters. And then, the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip, so that the FPGA chip ends the preset interrupt event and acquires the image frame from the image sensor. Therefore, even if the image acquisition device uses an image sensor which does not support the image drawing in the trigger mode, the image drawing in the trigger mode can be realized, so that the cost of the image acquisition device is reduced, and when the image acquisition device is triggered at the rear end to acquire the image, the image output by the image acquisition device is complete and consumes time stably.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (14)
1. A trigger acquisition method of an image sensor is characterized by being applied to an image acquisition device, wherein the image acquisition device comprises: the image acquisition device comprises a processor, an FPGA chip and an image sensor, wherein the processor runs a driving program of the image acquisition device, and the method comprises the following steps:
the driving program controls the image sensor to stop outputting the current image frame under the condition that a preset interrupt event notification of the FPGA chip is received, and configures parameters of the image sensor based on pre-stored configuration parameters, wherein the preset interrupt event notification is used for indicating the FPGA chip to generate a preset interrupt event based on a photographing instruction; and
and the driver sends an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
2. The trigger acquisition method of an image sensor according to claim 1, wherein the preset interrupt event notification includes an interrupt number of the preset interrupt event.
3. The trigger acquisition method of the image sensor according to claim 1, wherein the driver configuring the parameters of the image sensor based on the pre-stored configuration parameters comprises:
and the driving program judges whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters or not, and configures the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters.
4. The trigger acquisition method of an image sensor of claim 3, further comprising:
and the driver does not configure the parameters of the image sensor under the condition that the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters.
5. The trigger acquisition method of the image sensor as claimed in claim 1, wherein the controlling of the image sensor by the driver to terminate the output of the current image frame comprises:
the driver configures a restart register of the image sensor to cause the image sensor to terminate output of a current image frame.
6. The trigger acquisition method of the image sensor according to claim 1, wherein the parameters of the image sensor comprise at least one of: exposure value, gain value, frame rate, contrast.
7. The trigger acquisition method of the image sensor according to any one of claims 1 to 6, wherein the image sensor is an image sensor that does not support mapping in the trigger mode.
8. An image capturing apparatus characterized in that the image capturing apparatus comprises: the system comprises an FPGA chip, a processor and an image sensor, wherein the processor runs a driving program of the image acquisition equipment; wherein the content of the first and second substances,
the processor is used for controlling the image sensor to stop outputting the current image frame and configuring the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the driver is used for receiving the preset interrupt event notification of the FPGA chip, wherein the preset interrupt event notification is used for indicating the FPGA chip to generate the preset interrupt event based on the photographing instruction;
the processor is further configured to send an interrupt event end notification corresponding to the preset interrupt event to the FPGA chip by using the driver, so that the FPGA chip ends the preset interrupt event and acquires an image frame from the image sensor.
9. The apparatus according to claim 8, wherein the preset interrupt event notification includes an interrupt number of the preset interrupt event.
10. The image capture device of claim 8, wherein the processor configuring the parameters of the image sensor based on pre-stored configuration parameters using the driver comprises:
the processor judges whether the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters or not by using the driving program, and configures the parameters of the image sensor based on the pre-stored configuration parameters under the condition that the configuration parameters corresponding to the current image frame are not the same as the pre-stored configuration parameters.
11. The apparatus of claim 10, wherein the processor is further configured to not configure the parameters of the image sensor by using the driver if the configuration parameters corresponding to the current image frame are the same as the pre-stored configuration parameters.
12. The image capturing device of claim 8, wherein the processor controlling the image sensor to terminate output of a current image frame using the driver comprises:
the processor configures a restart register of the image sensor using the driver to cause the image sensor to terminate output of a current image frame.
13. The image capturing device of claim 8, wherein the parameters of the image sensor include at least one of: exposure value, gain value, frame rate, contrast.
14. The image capturing device according to any one of claims 8 to 13, characterized in that the image sensor is an image sensor that does not support mapping in a triggered mode.
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