CN115585885A - Multi-region multispectral detection device and detection method thereof, and electronic equipment - Google Patents

Abstract

The application discloses a multi-region multi-spectral detection device, a multi-region multi-spectral detection method thereof and electronic equipment, wherein the multi-region multi-spectral detection device is provided with a plurality of detection regions, the detection regions are provided with a plurality of spectral channels with different wave bands, and the duration of a single-frame detection window of each spectral channel is preset duration; the multi-region multispectral detection method comprises: and adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel. The multi-region multi-spectral detection method can reduce power consumption.

Description

Multi-region multispectral detection device and detection method thereof, and electronic equipment

Technical Field

The application relates to the technical field of multi-region multispectral detection, in particular to a multi-region multispectral detection device and a detection method thereof, and an electronic device

Background

The essence of photography is to record the current light information, and at present, a photodiode converts a light signal into an electrical signal to detect, record and store the electrical signal mainly through a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) device. However, these methods only record brightness information at different positions according to the light intensity, but cannot capture color information, because of the operating principle of the photodiode.

The color separation of light is determined by the wavelength of light, and different color lights correspond to different wavelength bands, such as red light wavelength of about 620nm to 780nm, green light wavelength of about 490nm to 560nm, and near infrared light wavelength of about 780nm to 1500nm. The photodiode can only detect the intensity of the light energy and cannot distinguish between different wavelengths. For example, if the ambient light contains the light of the above three wavelength bands at the same time, and the light intensity of each wavelength band is the same, the green light energy perceived by the human eye is obviously higher than the red light energy, and the infrared light energy cannot be perceived by the human eye. The purpose of photography is to restore the light and shadow information that can be perceived by human eyes at that time. However, due to the non-differentiated recording of the light with different wavelengths by the photodiode, a phenomenon occurs in which the photo and the actually seen light and shadow effects are not consistent, so-called color shift.

Under the background that other intelligent terminal devices such as smart phones have higher and higher requirements on photography, the demands of mobile phone manufacturers on multispectral detection of ambient light are also more and more urgent. The multispectral detection is to detect the light signals with different wavelengths in the ambient light respectively, record the light energy of each wave band, and record all the component information of each wave band in the ambient light at that time. Then, the intelligent terminal device can perform algorithm correction on the shot picture by using the information, and effectively restore the light condition sensed by human eyes at the moment when the image is recorded.

And multi-region multispectral imaging can be used for respectively carrying out multispectral detection on different regions, the imaging effect is better, but because the multi-region multispectral imaging needs more spectral channels, the power consumption in the working process is larger.

How to reduce the power consumption of multi-region multispectral detection is an urgent problem to be solved at present.

Disclosure of Invention

In view of this, the present disclosure provides a multi-region multi-spectral detection apparatus, a detection method thereof, and an electronic device, so as to solve the problem of large power consumption of the conventional multi-region multi-spectral detection apparatus.

The application provides a multi-region multi-spectral detection method of a multi-region multi-spectral detection device, wherein the multi-region multi-spectral detection device is provided with a plurality of detection regions, the detection regions are provided with a plurality of spectral channels with different wave bands, and the duration of a single-frame detection window of each spectral channel is preset duration; the multi-region multispectral detection method comprises: and adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel.

Optionally, the method for adjusting the actual detection duration in the single-frame detection window of the spectrum channel according to the detected light intensity of the spectrum channel includes: when the light intensity detected by the spectrum channel is greater than a first threshold value, the actual detection time length is less than the preset time length; and when the light intensity detected by the spectrum channel is less than or equal to a first threshold value, the actual detection time length is equal to the preset time length.

Optionally, the actual detection time length is t1, the preset time length is t0, the actual detection time length t1= t0/p, and p is greater than or equal to 1.

Optionally, different first thresholds are configured for detection areas at different positions, respectively.

Optionally, different first thresholds are configured for spectrum channels of different wavebands, respectively.

Optionally, the method for adjusting the actual detection duration includes: detecting a detection signal output by a spectrum channel, and stopping detection when the amplitude of the detection signal is increased to a preset amplitude; the preset amplitude corresponds to a first threshold corresponding to the spectral channel; and when the amplitude of the detection signal is less than or equal to the preset amplitude, continuing the detection until the end of the single-frame detection window.

Optionally, the method for adjusting the actual detection duration includes: and (4) pre-detecting the light intensity passing through the spectrum channel, and determining the actual detection time length according to the detected light intensity.

Optionally, the method further includes: induced charges generated by the spectrum channels with the same wave band and the light intensities of which are smaller than a second threshold value in different detection regions are collected into one spectrum channel, and the spectrum channel is used for detection.

The present application further provides a multi-region multi-spectral detection device, comprising: the detection area is provided with a plurality of spectrum channels with different wave bands, and the time length of a single-frame detection window of each spectrum channel is preset time length; and the detection control module is connected to the detection areas and used for adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel.

The present application further provides a multi-region multi-spectral detection device, comprising: the system comprises a plurality of detection areas, a plurality of spectrum channels with different wave bands are arranged in the detection areas, and the duration of a single-frame detection window of each spectrum channel is preset duration; a memory for storing a computer program; a processor connected to the detection regions and the memory, the computer program, when executed by the processor, enabling the multi-region multi-spectral detection method of any of the above.

An electronic device comprising a multi-region multi-spectral detection apparatus as described in any of the above; or enable the multi-region multi-spectral detection method as described in any of the above.

The multi-region multi-spectral detection method flexibly selects the opening time and the opening number of the spectral channels by utilizing the characteristics that the application scene has wide light intensity coverage and has different requirements on the spectral detection accuracy of different colors and different positions, so that the accuracy requirements can be met no matter under the condition of strong light or weak light, and meanwhile, the power consumption required by detection is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the distribution of detection areas of a multi-region multi-spectral detection method according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating a distribution of spectral channels within a detection region of a multi-region multi-spectral detection method according to an embodiment of the present application;

FIG. 3 is a diagram illustrating a single frame detection window and an actual detection duration for a multi-region multi-spectral detection method according to an embodiment of the present application;

FIG. 4a is a diagram illustrating the relationship between the light intensity and the actual detection time duration according to an embodiment of the present application;

FIG. 4b is a diagram illustrating the relationship between the light intensity and the actual detection time duration according to another embodiment of the present application;

FIG. 4c is a diagram illustrating the relationship between the light intensity and the actual detection time according to another embodiment of the present application;

FIG. 5a is a diagram of conventional detection of 4 spectral channels of the same wavelength band according to an embodiment of the present application;

FIG. 5b is a diagram illustrating the detection of 4 spectral channels of the same wavelength band in charge-combined mode according to an embodiment of the present application;

fig. 6 is a schematic diagram of detection signals of the 4 spectral channels in the same wavelength band after detection in the charge-combining mode according to an embodiment of the present application.

Detailed Description

As described in the background, the prior art multi-region multi-spectral detection is power consuming.

Please refer to fig. 1, which is a schematic diagram illustrating a distribution of detection regions in multi-region multi-spectral detection according to an embodiment of the present invention.

To achieve multi-region multi-spectral detection, it is necessary to add multi-spectral detection regions, for example, to divide the imaging region into 7 × 5 detection regions in the example of fig. 1. A plurality of spectral channels corresponding to different wavelength bands are respectively disposed in each region to detect the energy of optical signals with a plurality of different wavelengths (colors) (in the example of fig. 1, each region detects signals with 9 different wavelength bands). The spectral channel includes both a device (e.g., a photodiode) that performs photoelectric conversion of a particular wavelength band and processing circuitry coupled to the device for processing charge generated by photoelectric conversion of the device to generate a detection signal. Each region and each wave band in the region require a corresponding spectral channel of light intensity. For example, in fig. 1, 7 × 5 × 9=341 spectral channels are needed, and each spectral channel outputs a detection signal. Therefore, the number of detection channels which need to be started to work simultaneously in the multi-region multi-spectral detection is correspondingly large. In addition, the light energy of each wavelength band under different environments has a very large variation range, so that each detection channel is required to have a large dynamic measurement range.

Therefore, the multi-region multi-spectral detection requires a large number of spectral channels to be operated simultaneously, and each channel has high detection accuracy requirement. All spectral channels need to be opened simultaneously, and the light intensity energy of the ambient light in each wave band is detected in real time without stopping all the time. This consumes a large amount of power.

In order to solve the problems, the application provides a novel multi-region multi-spectral detection device and a novel multi-region multi-spectral detection method, and the characteristics that the application scene has wide light intensity coverage and different spectral detection precision requirements of different colors and different positions are utilized, so that the opening time and the opening number of the spectral channels are flexibly selected, the precision requirements can be met no matter under the condition of strong light or weak light, and meanwhile, the power consumption required by detection is effectively reduced.

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application. The following embodiments and their technical features may be combined with each other without conflict.

As shown in fig. 2, in the multispectral detection device adopted in the multispectral detection method, an imaging region 100 is divided into a plurality of detection regions, the detection regions are provided with a plurality of spectral channels with different wave bands, and the duration of a single-frame detection window of each spectral channel is preset duration; the multispectral detection method comprises the following steps: and adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel.

As the multispectral detection, the number of the spectral channels arranged in each detection area is usually more than 4, and the more the spectral channels are, the shorter the wavelength range recorded by each spectral channel is, and the richer the spectral information obtained by each detection area is.

In the embodiment shown in fig. 2, the same spectral channels are disposed in each detection region, and specifically, each detection region has the same size (i.e., the area size of the region where photoelectric conversion is performed is the same), and has the corresponding same number of spectral channels and the same wavelength band distribution. By taking four detection regions 101, 102, 103 and 104 as examples, 9 spectral channels are formed in each detection region, wherein the spectral channels A1, B1, C1 and D1 are the same spectral channels and correspond to the same wavelength band (color); the spectral channels A2, B2, C2 and D2 are the same spectral channels and correspond to the same wave band (color); the other detection regions are not specifically labeled with spectral channels, and are not described one by one again.

In other embodiments, different numbers and/or different wavelength bands of spectral channels may be provided within the detection region at different locations, respectively, as may be required for accuracy or wavelength band of the multi-spectral detection at different locations within each imaging region. In some embodiments, the imaging region 100 may be divided into m × n (m rows, n columns) detection regions, each having k spectral channels therein, thus, there are n × m × k spectral channels in total.

The corresponding position of each spectral channel has a corresponding relationship with the position of the imaged pixel, and most ideally, each detection area corresponds to each pixel. However, the method is limited by the existing coating (filter) technology, and cannot make each pixel correspond to each spectral channel, that is, the resolution of the spectral channel is not as high as the imaging resolution, and usually a group of pixels at a fixed position corresponds to a fixed spectral channel. The smaller the size of a single detection region, the fewer the number of corresponding imaging pixels, the higher the resolution of the multi-spectral detection, and the higher the resolution for spectral changes.

Each spectral channel converts a received optical signal into electric charges through photoelectric conversion, accumulates the electric charges within a certain time, and then processes the accumulated electric charges to form a detection signal. In the detection process, the charges generated by each spectral channel are obtained by opening a detection window, so that the detection data of each spectral channel is obtained, and each detection window corresponds to one frame of data. It is assumed that the duration of the single frame detection window of each channel is a preset duration t0. For a whole frame of data, i.e. n × m × k spectral channels are opened simultaneously, the light intensity energy of each band (color) in all detection regions can be detected in t0 time, i.e. the output rate (frame rate) of a single frame is (n × m × k detected data)/t 0.

In some embodiments, the method for adjusting the actual detection duration of single frame detection of a spectral channel according to the detected light intensity of the spectral channel includes: when the light intensity detected by the spectrum channel is greater than a first threshold value, the actual detection time length is less than the preset time length; and when the light intensity detected by the spectrum channel is less than or equal to a first threshold value, the actual detection time length is equal to the preset time length.

In an actual application scene, ambient light detection usually covers a very large light intensity range, and because each spectral channel has a background noise, under the condition of weak light intensity, an actual detection signal is small, so that the signal-to-noise ratio is low; under the condition of strong light intensity, the collected signal energy is detected in a short time, and the requirement of the signal-to-noise ratio can be met. Therefore, the actual detection duration of each spectral channel can be set according to the light intensity condition, and the actual detection duration is prolonged under the condition of weaker light intensity; under the condition that the light intensity is stronger, the actual detection duration can be shortened, and then the power consumption is saved.

In some embodiments, the preset duration of the single-frame detection window is the longest duration of the actual detection duration, and is set to t0; when the light intensity is greater than the first threshold Th1, a shorter actual detection time period t1 is selected, where the actual detection time period t1 is less than the preset time period t0, for example, t1= t0/p, and p ≧ 1. Due to the fact that the light intensity is large, even though the actual detection time is shortened, enough signal energy can still be collected, and enough signal-to-noise ratio is achieved. Because the single-frame output time, namely the single-frame detection window is still t0, the actual working time of the spectral channel is t0/p, and the spectral channel does not need to work in the period of time beyond the time, the power consumption can be saved. Please refer to fig. 3, which is a schematic diagram of a single frame detection window and an actual detection duration of a spectral channel according to the present application.

The first threshold Th1 and the actual detection time t1 may be set according to a background noise condition of the spectrum channel, at least meeting a requirement that when the light intensity is the first threshold Th1, the actual detection time is t1, and a signal-to-noise ratio requirement can be met.

Referring to fig. 4a, in some embodiments, when the light intensity is less than or equal to the first threshold Th1, the actual detection duration is a duration t0 of the single frame detection window; when the light intensity is greater than the first threshold Th1, the actual detection duration is t1, which is less than the duration t0 of the single-frame detection window. When the light intensity is larger than the first threshold value, the actual detection time length is fixed to t1 no matter the actual size of the light intensity.

In some embodiments, the actual detection time period may also be a variable value, and in the case that the light intensity is greater than the first threshold, the actual detection time period may further decrease as the light intensity is greater.

In some embodiments, when the light intensity is less than or equal to the first threshold, the actual detection duration is the duration of the single-frame detection window; when the light intensity is larger than the first threshold value, the actual detection duration is smaller than the duration of the single-frame detection window, and the actual detection duration is in a step decrease along with the increase of the light intensity. For example, the light intensity range larger than the first threshold is divided into a plurality of sub-intervals, each interval corresponding to the same actual detection time. Referring to fig. 4b, in this embodiment, the light intensity range greater than the first threshold Th11 is divided into a plurality of sections, and the actual detection time period is t11 when the light intensity is within the range from Th11 to Th 12; when the light intensity is within the interval from Th12 to Th13, the actual detection time is t12; when the light intensity is greater than Th13, the actual detection period is t13.

In some embodiments, when the light intensity is greater than the first threshold, the actual detection duration is less than the duration of the single-frame detection window, and the actual detection duration decreases in a curve as the light intensity is greater. The curve can be set according to actual conditions, and can be a primary curve, a secondary curve or a plurality of curves. Referring to fig. 4c, in the embodiment, in the light intensity range larger than the first threshold Th1, the actual detection time and the light intensity increase and linearly decrease until the minimum detection time t10.

Since the light intensity distribution range is different in different regions in the detection field of view, the actual detection time for the spectral channels at different positions may be different.

In some embodiments, the method of adjusting the actual detection duration comprises: detecting a detection signal output by a spectrum channel, and stopping detection when the amplitude of the detection signal is increased to a preset amplitude; the preset amplitude corresponds to a first threshold corresponding to the spectrum channel; and when the amplitude of the detection signal is less than or equal to the preset amplitude, continuing the detection until the end of the single-frame detection window. Since the light energy is converted into the electric charge amount during the photoelectric conversion, the more the generated electric charge amount is, the larger the light receiving time is, the larger the detection signal amplitude is, and the shorter the time required for reaching the preset amplitude value is. And corresponding to the setting mode of the first threshold, the preset amplitude value can also be set according to the background noise of the spectrum channel, and when the detection signal reaches the preset amplitude value, the signal-to-noise ratio requirement of detection can be met, and the detection can be stopped. Under the condition of larger light intensity, when the actual detection time length does not reach the preset time length of the single-frame detection window, the amplitude of the detection signal can reach the preset amplitude, the actual detection time of each frame of data output can be shortened, and the power consumption is reduced. And under the condition of low light intensity, the detection is required to be continuously carried out until the end of a single-frame detection window so as to obtain the amplitude of a higher detection signal as much as possible and improve the signal-to-noise ratio. The method can simultaneously turn on all the spectrum channels, and then each spectrum channel autonomously decides when to finish detection according to the actual situation. The longest actual detection time does not exceed the preset time duration t0 of the window. This approach is simpler to implement, but the peak power consumption is higher.

In other embodiments, the method of adjusting the actual detection duration comprises: and (4) pre-detecting the light intensity passing through the spectrum channel, and determining the actual detection time according to the detected light intensity. The short-time low-precision pre-detection can be performed in a short time, and the light intensity is calculated according to the pre-detection time and the obtained detection signal amplitude. The corresponding actual detection time length is set by comparing the light intensity with a threshold value. The pre-detection can be carried out after each single-frame detection window is opened, the pre-detection is carried out firstly, the actual detection duration is set according to the pre-detection result, and then the subsequent actual detection is continued, wherein the pre-detection is used as a part of the actual detection, and the detection signal in the pre-detection process is used as a part of the detection signal obtained in the actual detection process; in other embodiments, there may be a pre-detection for an additional period of time added before the single frame detection window is opened, and the pre-detection results in a pre-detected signal that is not the actual detected signal. After the actual detection time is determined through pre-detection, all the spectrum channels can be opened in a time-sharing mode, namely the number of the spectrum channels opened at the same time is small, and the peak power consumption is low.

The average power consumption of the above modes is not very different, and the most appropriate mode can be selected to shorten the detection time of each channel and reduce the average power consumption according to the actual circuit implementation conditions.

Different first thresholds may also be set for different spectral channels, respectively.

In some embodiments, different first thresholds are configured for different bands of spectral channels, respectively. Since the human eyes have very different sensitivity to different bands of light intensities, although each detection region needs to detect a plurality of different bands, i.e. a plurality of spectral channels for different colors, the required signal-to-noise ratio requirement for each color is different in practice. For example, for green light, which is most sensitive to the human eye, the signal-to-noise ratio required for the corresponding spectral channel is also highest; for blue light with lower wavelength and red light with higher wavelength, the perception sensitivity of human eyes is lower, and even if the detection precision of the corresponding spectrum channel is slightly lower, the influence on the perception of the human eyes is not large, so different first threshold values can be respectively set for the spectrum channels with different wave bands. For the spectral channels of the color with lower sensitivity requirement, the first threshold may be set lower to reduce the actual detection time of the corresponding spectral channel as much as possible; for the spectral channels of the color with higher sensitivity requirement, the first threshold can be set higher to improve the signal-to-noise ratio as much as possible and improve the sensitivity. The higher the sensitivity requirement, the larger the corresponding first threshold.

In some embodiments, the first threshold may be configured to be different for detection areas at different positions. The multi-region multispectral detection result is used for performing algorithm correction on the picture shot under the current ambient light condition so as to avoid the influence of color cast. Different imaging areas often have different requirements on the color cast compensation accuracy, such as the positions of the edges, corners, and the like of a picture, and due to the existence of factors such as lens distortion, the original accuracy requirement is relatively low. In some cases, the attention of the user is different for different imaging regions, for example, the attention at the center position of the imaging region is larger than the attention at the edge position of the imaging region, which requires that the detection accuracy of each spectral channel in the detection region at the center position is larger than the detection accuracy of each spectral channel in the detection region at the edge position. Therefore, the spectral channels in the regions with lower precision requirements can be set with a relatively lower first threshold, so that the detection time is reduced under the condition that the precision requirements of the regions are still met, and the power consumption is effectively reduced.

In other embodiments, different spectral channels within the same detection region may respectively correspond to different first thresholds; the same spectral channels of different detection areas can also correspond to different first threshold values; can be set according to different requirements. Preferably, the sensitivity setting can be performed according to the comprehensive requirements of human eyes on the sensitivity requirements of different wavelengths, the sensitivity requirements of different positions and the like.

In some embodiments, when the light intensity received by the spectrum channel is less than the second threshold, the light intensity is too low, even if the actual detection time length of a single frame of the spectrum channel is equal to the detection window time length of the single frame, the amplitude of the obtained detection signal is still small, the signal-to-noise ratio is low, and the requirement of sensitivity cannot be met. In this case, the induced charges generated by the spectral channels of the same wavelength band, in which the light intensities in different detection regions are all smaller than the second threshold value, can be collected into one of the spectral channels, and the one spectral channel can be used for detection. At this time, for the detection circuit of the spectral channel, the amplitude of the input signal is increased, but the noise of the spectral channel is not increased, thereby achieving the effect of improving the signal-to-noise ratio. In addition, the number of spectrum channels (namely, detection circuits of the spectrum channels) required to be opened is reduced, and accordingly, the total power consumption required by detection is reduced. Preferentially, charges in the same wave band of adjacent detection areas are collected, which is beneficial to the realization of a circuit.

Referring to fig. 5a, in the conventional mode, the charges generated by the four spectral channels A1, B1, C1, D1 in the same wavelength band are detected by the respective detection circuits A1, B1, C1, D1, and the detection signals Q11, Q21, Q31, Q41 are respectively output.

Referring to fig. 5B, when the light intensities received by the 4 spectral channels are all smaller than the second threshold, the photoelectric conversion devices of the 4 spectral channels are electrically connected, so that the charges generated by the four spectral channels A1, B1, C1, and D1 are collected into the detection circuit of one of the spectral channels. Taking the signal collected to the detection circuit b1 as an example, the detection circuit b1 outputs the detection signal Q1, and the detection circuits of other spectral channels do not work, so that the number of the opened spectral channels is reduced, and the input signal of the spectral channel is changed to be 4 times of the original input signal, but the noise is not increased, so that the signal-to-noise ratio can be improved by 4 times. In imaging, the average value of Q1 can be used as the detection signal corresponding to A1, B1, C1, D1, please refer to fig. 6.

In some embodiments, the charge-combining mode and the real-time selection of the channel actual detection time may be mixed at the same time. For example, in certain circumstances, green light has a relatively large energy, while red light has a very low energy. Then the green corresponding spectral channels of all detection areas may be fully on but the actual detection time is very short. And the red light detection enters a low-power-consumption charge combination mode, only a few red light spectrum channels are needed to be started through combination of spectrum channels corresponding to the red light in the detection area to cover measurement of the red light energy of all the areas, and the longest time t0 is selected for the starting time of each red light spectrum channel.

In the detection process, the light intensity distribution situation can be changed continuously, so that the actual detection time of each spectral channel in each detection area can be adjusted in real time or at regular time according to the current light intensity distribution situation.

The multi-light-area multi-spectral detection method provides an energy-saving mode of multi-light-area multi-spectral detection adaptive to ambient light energy, and by utilizing the characteristics that the application scene has wide light intensity range coverage and has different requirements on the spectral detection precision of different colors and different positions, the opening time and the opening number of the detection channels are flexibly selected, so that the detection channels can meet the precision requirement no matter under the condition of strong light or weak light, and meanwhile, the power consumption required by detection is effectively reduced.

Embodiments of the present application also provide a multi-region multispectral detection device, including: the detection area is provided with a plurality of spectrum channels with different wave bands, and the time length of a single-frame detection window of each spectrum channel is preset time length; and the detection control module is connected to the detection areas and used for adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel. The specific working principle and method of the detection control module may refer to the specific description in the foregoing embodiments, and are not described herein again.

The present application also provides a multi-region multispectral detection device, comprising: the detection area is provided with a plurality of spectrum channels with different wave bands, and the time length of a single-frame detection window of each spectrum channel is preset time length; a memory for storing a computer program; a processor connected to the detection areas and the memory, the computer program being capable of implementing the multi-region multi-spectral detection method as described in any of the above embodiments when executed by the processor.

Embodiments of the present application also provide an electronic device, including the multi-region multispectral detection device as described in the above embodiments; or can implement the multi-region multi-spectral detection method as described in the above embodiments. The electronic equipment can be terminal equipment with a shooting function, such as a smart phone, a tablet personal computer and a smart watch, multispectral spectral information can be obtained through the multi-region multispectral detection device, and the shooting effect is improved. The electronic device can also be a multispectral detection device used for spectral detection, and the effect of spectral imaging is realized through multi-region multispectral detection.

The above-mentioned embodiments are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by the contents of the specification and the drawings, such as the combination of technical features between the embodiments and the direct or indirect application to other related technical fields, are also included in the scope of the present application.

Claims (11)

1. The multi-region multi-spectral detection method of the multi-region multi-spectral detection device is characterized in that the multi-region multi-spectral detection device is provided with a plurality of detection regions, the detection regions are provided with a plurality of spectral channels with different wave bands, and the duration of a single-frame detection window of each spectral channel is preset duration; the multi-region multispectral detection method comprises:

and adjusting the actual detection time length in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel.

2. The method according to claim 1, wherein adjusting the actual detection duration within the single-frame detection window of a spectral channel based on the detected light intensity of the spectral channel comprises: when the light intensity detected by the spectrum channel is greater than a first threshold value, the actual detection time length is less than the preset time length; and when the light intensity detected by the spectrum channel is less than or equal to a first threshold value, the actual detection time length is equal to the preset time length.

3. The multi-region multi-spectral detection method according to claim 1, wherein the actual detection time period is t1, the preset time period is t0, the actual detection time period t1= t0/p, and p ≧ 1.

4. The multi-region multi-spectral detection method according to claim 2, wherein the first threshold is configured differently for detection regions at different locations, respectively.

5. The method according to claim 2, wherein the first threshold is configured differently for different bands of spectral channels.

6. The method of multi-region multispectral detection according to claim 1, wherein adjusting the actual detection duration comprises: detecting a detection signal output by a spectrum channel, and stopping detection when the amplitude of the detection signal is increased to a preset amplitude; the preset amplitude corresponds to a first threshold corresponding to the spectrum channel; and when the amplitude of the detection signal is less than or equal to the preset amplitude, continuing to detect until the end of the single-frame detection window.

7. The method of multi-region multispectral detection according to claim 1, wherein adjusting the actual detection duration comprises: and (4) pre-detecting the light intensity passing through the spectrum channel, and determining the actual detection time according to the detected light intensity.

8. The multi-region multispectral detection method of claim 1, further comprising: induced charges generated by the spectrum channels with the same wave band and the light intensities of which are smaller than a second threshold value in different detection regions are collected into one spectrum channel, and the spectrum channel is used for detection.

9. A multi-region multi-spectral detection apparatus, comprising:

the detection area is provided with a plurality of spectrum channels with different wave bands, and the time length of a single-frame detection window of each spectrum channel is preset time length;

and the detection control module is connected to the detection areas and used for adjusting the actual detection duration in the single-frame detection window of the spectrum channel according to the light intensity detected by the spectrum channel.

10. A multi-region multi-spectral detection apparatus, comprising:

the detection area is provided with a plurality of spectrum channels with different wave bands, and the time length of a single-frame detection window of each spectrum channel is preset time length;

a memory for storing a computer program;

a processor connected to the detection zones and the memory, the computer program, when executed by the processor, being capable of implementing the multi-zone multi-spectral detection method of any one of claims 1 to 8.

11. An electronic device comprising the multi-region multi-spectral detection device of claim 9 or 10; or enable the multi-region multispectral detection method of any one of claims 1 to 8.

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