WO2023181092A1 - 電子機器、電子機器の制御方法およびプログラム - Google Patents
電子機器、電子機器の制御方法およびプログラム Download PDFInfo
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- WO2023181092A1 WO2023181092A1 PCT/JP2022/012944 JP2022012944W WO2023181092A1 WO 2023181092 A1 WO2023181092 A1 WO 2023181092A1 JP 2022012944 W JP2022012944 W JP 2022012944W WO 2023181092 A1 WO2023181092 A1 WO 2023181092A1
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- 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
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- the present invention relates to an electronic device, a method of controlling the electronic device, and a program.
- Event-based vision sensors are known in which pixels that detect changes in the intensity of incident light generate signals in a time-asynchronous manner. Event-based vision sensors can operate at low power and high speed compared to frame-type vision sensors that scan all pixels at predetermined intervals, specifically image sensors such as CCD and CMOS, and can operate at high speed with low temporal resolution. This is advantageous in that both spatial resolution and spatial resolution can be increased. Techniques regarding such event-based vision sensors are described in, for example, Patent Document 1 and Patent Document 2.
- the present invention aims to provide an electronic device, a control method for the electronic device, and a program that can realize effective operation when an event-based vision sensor is implemented together with other devices. purpose.
- an event-based vision sensor, a physical input/output unit, and a predetermined flag are attached to an event signal generated by the event-based vision sensor during operation of the input/output unit.
- An electronic device is provided that includes a control unit for setting.
- a method for controlling an electronic device including an event-based vision sensor and a physical input/output unit, wherein during operation of the input/output unit, the event-based vision sensor
- a method for controlling an electronic device including the step of setting a predetermined flag in an event signal generated by the method.
- a control program for an electronic device including an event-based vision sensor and a physical input/output unit, wherein during operation of the input/output unit, the event-based vision sensor
- a program is provided that causes a computer to implement a function of setting a predetermined flag on an event signal generated by a sensor.
- FIG. 1 is a diagram schematically showing the configuration of an electronic device according to an embodiment of the present invention.
- 12 is a flowchart illustrating an example of processing when a vibrator, speaker, or display operates.
- 12 is a flowchart illustrating an example of processing when an operation button or a touch sensor receives a physical input.
- 3 is a flowchart illustrating an example of processing when a flash device operates.
- FIG. 1 is a diagram schematically showing the configuration of an electronic device according to an embodiment of the present invention.
- the electronic device 10 includes an event-based vision sensor (EVS) 110, a vibrator 120, a speaker 130, an operation button 140, a touch sensor 150, a display 160, It includes a flash device 170, a control unit 200, a memory 210, a recording medium 220, and a communication device 230.
- the electronic device 10 according to the present embodiment is, for example, a smartphone, a tablet terminal, a portable game machine, or the like.
- the electronic device 10 does not necessarily need to include all of the vibrator 120, the speaker 130, the operation button 140, the touch sensor 150, the display 160, and the flash device 170, and may include only some of them.
- Touch sensor 150 and display 160 may be integrally implemented as a touch panel, for example.
- the electronic device 10 may include a physical input/output unit that is not limited to the above example.
- the EVS 110 is also called an EDS (Event Driven Sensor), an event camera, or a DVS (Dynamic Vision Sensor), and includes a sensor array composed of sensors including light receiving elements.
- the EVS 110 generates an event signal that includes a timestamp, identification information of the sensor, and information about the polarity of the brightness change when the sensor detects a change in the intensity of incident light, more specifically a change in brightness on the surface of an object.
- the event signal generated by the EVS 110 is input to the control unit 200.
- the control unit 200 temporarily or continuously stores the event signal in the memory 210 or the recording medium 220, or transfers the event signal to the external device 20 via the communication device 230.
- the vibrator 120, the speaker 130, the operation button 140, the touch sensor 150, the display 160, and the flash device 170 also operate under the control of the control unit 200 or send input signals to the control unit 200. Therefore, the operation timings of these devices are known in the control unit 200.
- the control unit 200 is configured by a processing circuit such as a CPU (Central Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), and/or an FPGA (Field-Programmable Gate Array).
- the memory 210 is configured by, for example, a storage device such as various types of ROM (Read Only Memory), RAM (Random Access Memory), and/or HDD (Hard Disk Drive).
- the control unit 200 executes operations as described below according to program codes stored in the memory 210.
- the program code may be read into the memory 210 from the recording medium 220, or may be received from the external device 20 via the communication device 230 and stored in the memory 210.
- the recording medium 220 includes, for example, a removable recording medium such as a semiconductor memory, a magnetic disk, an optical disk, or a magneto-optical disk, and a driver thereof.
- Communication device 230 includes various wired or wireless communication interfaces.
- the vibrator 120, speaker 130, operation button 140, touch sensor 150, display 160, and flash device 170 included in the electronic device 10 are examples of physical input/output units. More specifically, vibrator 120 and speaker 130 are devices that generate mechanical output called vibration.
- the operation button 140 and the touch sensor 150 are contact-type input devices, and are devices that accept mechanical inputs such as contact and pressure from a user's finger or the like.
- Display 160 and flash device 170 are devices that generate a physical output of light. As described below, when the above-mentioned physical input/output unit operates in the electronic device 10 in which the EVS 110 is installed, the detection results of the EVS 110 may be affected.
- the vibrator 120 generates vibrations in the housing of the electronic device 10, so when the vibrator 120 operates, the EVS 110 also vibrates.
- the EVS 110 detects changes in the intensity of incident light, but when the EVS 110 itself vibrates, the intensity of light at each pixel changes due to changes in the positional relationship with the object, so there is no change in brightness on the object surface.
- an event signal is generated at each pixel.
- an event signal is generated at each pixel of the EVS 110 due to vibrations generated in the housing when the speaker 130 outputs audio.
- Such an event signal becomes noise when, for example, the EVS 110 is used to detect movement of an object with respect to the electronic device 10. Since the EVS 110 has a higher temporal resolution than, for example, a frame-based vision sensor, there is a possibility that the influence of such vibration of the housing on the detection results cannot be ignored.
- displacement or vibration occurs in the casing of the electronic device 10 . Similar to the above example, when displacement or vibration occurs in the EVS 110 itself, an event signal is generated at each pixel even if no brightness change occurs on the object surface.
- the display 160 and the flash device 170 affect the detection results of the EVS 110 by reflecting the generated light on the object.
- a brightness change occurs on the surface of the object, but when detecting movement of the object with respect to the electronic device 10 using the EVS 110, for example, the light of the display 160 or flash device 170 is The event signal generated by the reflection becomes noise.
- the electronic device 10 may include an IMU (Inertial Measurement Unit).
- the IMU may be treated as a physical input/output unit in order to detect motion occurring in the housing of the electronic device 10.
- the IMU is used as a means for detecting that a physical input/output unit such as the above example, specifically, for example, the vibrator 120, the speaker 130, the operation button 140, or the touch sensor 150 is operating. Good too.
- the control unit 200 controls the detection results generated by the EVS 110 while the physical input/output unit is in operation, as described below.
- a predetermined flag is set for the event signal.
- the predetermined flag is added to the event signal as arbitrary setting information, for example.
- a predetermined flag distinguishes between event signals generated during the operation of the physical input/output unit and those that are not. It is possible to distinguish between the event signal and the event signal. Examples of processing by the control unit 200 in each example will be described below.
- FIG. 2 is a flowchart showing an example of processing when the vibrator 120, speaker 130, or display 160 operates.
- the vibrator 120, the speaker 130, and the display 160 operate under the control of the control unit 200, so the control unit 200 substantially controls the operation of these parts and the process of setting a flag in the event signal of the EVS 110. Can be synchronized.
- the control unit 200 sends a control signal to the vibrator 120, an audio signal to the speaker 130, or an audio signal to the display 160. Transmission of the image signal (step S102) and setting of a flag to the event signal (step S103) are executed substantially simultaneously.
- the above steps S101 to S103 are repeatedly executed, and while the vibrator 120, speaker 130, or display 160 continues to operate, the setting of the flag in the event signal continues.
- FIG. 3 is a flowchart illustrating an example of processing when the operation button 140 or the touch sensor 150 receives a physical input.
- the control unit 200 since the control unit 200 detects after the fact that the operation button 140 or the touch sensor 150 has received an input, the control unit 200 flags the event signal retroactively to the time when the input was received. Set. Specifically, when the control unit 200 receives an input signal from the operation button 140 or the touch sensor 150 (YES in step S201), the control unit 200 goes back in time by referring to the time stamp of the event signal buffered in the memory 210. A flag is set in the event signal in an interval of a predetermined length before and after the time when the input signal is received (step S202).
- Step S203 If input signals are received consecutively with a time difference shorter than the predetermined threshold (YES in step S203), the control unit 200 makes the section where the flag was previously set and the section where the flag is newly set consecutively. (Step S204). If the operation button 140 or the touch sensor 150 is continuously receiving input, the casing of the electronic device 10 is likely to be continuously displaced or vibrating. A flag can be continuously set in the event signal until the input of the event signal is completed.
- FIG. 4 is a flowchart showing an example of processing when the flash device 170 operates. Since the flash device 170 also operates under the control of the control unit 200, the control unit 200 substantially synchronizes the operation of the flash device 170 and the process of setting a flag in the event signal of the EVS 110, as in the example of FIG. It's okay. On the other hand, in the illustrated example, the operation of the flash device 170 is instantaneously executed, so that different processing from the example of FIG. 2 is executed.
- the control unit 200 determines to operate the flash device 170 (YES in step S301)
- the control unit 200 transmits a control signal to the flash device 170 (step S302), and transmits a control signal to the flash device 170 while the flash device 170 is in operation.
- the event signal buffered in the memory 210 is verified (step S303), and a flag is set for the event signal in an interval in which the time density of the event signal is specific (step S304).
- the section affected by the operation of the flash device 170 that is, the section in which a specifically large number of event signals are generated compared to the preceding and succeeding sections, can be more reliably identified and a flag set on the event signal. can do.
- the EVS 110 is connected to other devices, specifically, the vibrator 120, which is a physical input/output unit, the speaker 130, the operation button 140, and the touch sensor.
- the vibrator 120 which is a physical input/output unit
- the speaker 130 the speaker 130
- the operation button 140 the touch sensor.
- the touch sensor. 150, display 160, flash device 170, etc. are installed together, the effect on the detection results of the EVS 110 when the physical input/output section operates is reduced, and for example, noise included in the detection results is reduced. Reduced and effective operation can be achieved.
- the event signal for which the flag has been set may be treated as having low reliability. For example, a flagged event signal may be ignored. Alternatively, if an event signal with a flag set shows a different detection result from an event signal with no flag set, it may be ignored. Furthermore, if the event signal is affected by a device that operates continuously, such as the speaker 130 or the display 160, the event signal may be corrected and used according to a predetermined procedure.
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Abstract
Description
Claims (13)
- イベントベースのビジョンセンサと、
物理的な入出力部と、
前記入出力部の動作中は、前記イベントベースのビジョンセンサで生成されたイベント信号に所定のフラグを設定する制御部と
を備える電子機器。 - 前記入出力部は、振動を発生させる装置を含む、請求項1に記載の電子機器。
- 前記振動を発生させる装置は、バイブレータを含む、請求項2に記載の電子機器。
- 前記振動を発生させる装置は、スピーカーを含む、請求項2または請求項3に記載の電子機器。
- 前記入出力部は、接触型の入力装置を含む、請求項1から請求項4のいずれか1項に記載の電子機器。
- 前記接触型の入力装置は、操作ボタンを含む、請求項5に記載の電子機器。
- 前記接触型の入力装置は、タッチセンサを含む、請求項5または請求項6に記載の電子機器。
- 前記入出力部は、光を発生させる装置を含む、請求項1から請求項7のいずれか1項に記載の電子機器。
- 前記光を発生させる装置は、ディスプレイを含む、請求項8に記載の電子機器。
- 前記光を発生させる装置は、フラッシュ装置を含む、請求項8または請求項9に記載の電子機器。
- 前記制御部は、前記イベント信号を外部装置に転送する、請求項1から請求項10のいずれか1項に記載の電子機器。
- イベントベースのビジョンセンサと、物理的な入出力部とを備える電子機器の制御方法であって、
前記入出力部の動作中は、前記イベントベースのビジョンセンサで生成されたイベント信号に所定のフラグを設定するステップを含む、電子機器の制御方法。 - イベントベースのビジョンセンサと、物理的な入出力部とを備える電子機器の制御プログラムであって、
前記入出力部の動作中は、前記イベントベースのビジョンセンサで生成されたイベント信号に所定のフラグを設定する機能をコンピュータに実現させるプログラム。
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JP2018022490A (ja) * | 2016-08-01 | 2018-02-08 | 三星電子株式会社Samsung Electronics Co.,Ltd. | イベント信号処理方法及びその方法を遂行するイベント基盤センサー |
WO2020263230A1 (en) * | 2019-06-25 | 2020-12-30 | Hewlett-Packard Development Company, L.P. | Global motion suppression in an event-driven camera |
US20210136288A1 (en) * | 2019-11-05 | 2021-05-06 | Fotonation Limited | Event-sensor camera |
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JP2018022490A (ja) * | 2016-08-01 | 2018-02-08 | 三星電子株式会社Samsung Electronics Co.,Ltd. | イベント信号処理方法及びその方法を遂行するイベント基盤センサー |
WO2020263230A1 (en) * | 2019-06-25 | 2020-12-30 | Hewlett-Packard Development Company, L.P. | Global motion suppression in an event-driven camera |
US20210136288A1 (en) * | 2019-11-05 | 2021-05-06 | Fotonation Limited | Event-sensor camera |
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