CN106017369B - Detection method and device - Google Patents
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- CN106017369B CN106017369B CN201610612626.7A CN201610612626A CN106017369B CN 106017369 B CN106017369 B CN 106017369B CN 201610612626 A CN201610612626 A CN 201610612626A CN 106017369 B CN106017369 B CN 106017369B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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Abstract
The invention discloses a kind of detection methods, which comprises triggering mobile lens mould group focuses to target focusing picture；Acquire the phase-detection value at least two regions in the object picture that the mobile lens mould group captures；The phase-detection value at least two region is analyzed, analysis result is obtained；When the analysis result meets preset condition, determine that the complementary metal oxide semiconductor CMOS flatness of the mobile lens mould group is up to standard.The present invention also discloses a kind of detection devices.Using the present invention, the yields of lens module when can be improved mobile phone factory.
Description
Technical Field
The present invention relates to a parameter detection technology in the field of communication technologies, and in particular, to a detection method and apparatus.
Background
In the process of producing a mobile phone, a mobile phone manufacturer needs to purchase a lens module from a mobile phone lens module supplier. In practice, the flatness of Complementary Metal Oxide Semiconductor (CMOS) of a mobile phone lens module manufactured by a lens module manufacturer has a certain reject ratio; in contrast, lens module manufacturers generally use professional instruments to detect the flatness of the CMOS of the mobile phone lens module, and the default is that the quality of the lens module provided by the lens module manufacturer reaches the standard; however, in practice, some mobile phone lens modules with unsatisfactory CMOS flatness are provided for mobile phone manufacturers for various reasons.
However, mobile phone manufacturers do not have special instruments and conditions for detecting the flatness index of the CMOS; moreover, the mobile phone lens module is already assembled on the mobile phone, which further increases the difficulty of testing the instrument; if a mobile phone manufacturer fails to detect that the flatness of the CMOS is poor, the mobile phone lens module will greatly affect the photographing effect of the mobile phone, so that the photographing single side is blurred, and the imaging quality of the photographing of the mobile phone is reduced.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a detection method and apparatus to solve at least one problem in the prior art.
The technical scheme of the embodiment of the invention is realized as follows:
an embodiment of the present invention provides a detection apparatus, including:
the focusing module is used for triggering the mobile phone lens module to focus the target focusing picture;
the acquisition module is used for acquiring phase detection values of at least two areas in an object picture captured by the mobile phone lens module;
the analysis module is used for analyzing the phase detection values of the at least two areas to obtain an analysis result;
and the determining module is used for determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard when the analysis result meets the preset condition.
In the foregoing solution, the focusing module is specifically configured to:
and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
In the above scheme, the at least two regions at least include any two of the following regions: the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
In the foregoing solution, the analysis module is specifically configured to: respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2; and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
In the foregoing solution, the determining module is specifically configured to: and when the difference value between the maximum value and the minimum value in the average values is less than or equal to a threshold value, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard.
The embodiment of the invention provides a detection method, which comprises the following steps:
triggering the mobile phone lens module to focus the target focusing picture;
acquiring phase detection values of at least two areas in an object picture captured by the mobile phone lens module;
analyzing the phase detection values of the at least two regions to obtain an analysis result;
and when the analysis result meets a preset condition, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard.
In the above scheme, the triggering of the mobile phone lens module to focus the target focusing picture includes:
and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
In the above scheme, the at least two regions at least include any two of the following regions: the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
In the above scheme, the analyzing the phase detection values of the at least two regions to obtain an analysis result includes: respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2; and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
In the above scheme, when the analysis result satisfies the preset condition, determining that the CMOS flatness of the mobile phone lens module meets the standard includes: and when the difference value between the maximum value and the minimum value in the average values is less than or equal to a threshold value, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard.
Compared with the prior art, the detection method and the detection device provided by the embodiment of the invention have the advantages that the target focusing picture is focused by triggering the mobile phone lens module, the phase detection values of at least two areas in the object picture captured by the mobile phone lens module are collected, the phase detection values of the at least two areas are analyzed to obtain an analysis result, and when the analysis result meets the preset condition, the standard of the CMOS (complementary metal oxide semiconductor) flatness of the mobile phone lens module is determined. That is to say, for the camera with phase detection, under the condition of not using special measuring equipment, through letting the cell-phone carry out the focusing to the target focusing picture, gather the phase detection value of typical region in the whole picture to do the analysis to the phase detection value of different regions, can detect out whether CMOS roughness is up to standard, have easy operation, measure quick characteristics, can effectively detect out bad lens module, improve the yields of camera when the cell-phone dispatches from the factory.
Drawings
Fig. 1 is a schematic hardware configuration diagram of an alternative mobile terminal 100 for implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal 100 shown in FIG. 1;
FIG. 3 is a block diagram of the electrical structure of the camera;
FIG. 4 is a schematic diagram of an alternative structure of the detecting device in the embodiment of the present invention;
FIG. 5 is a schematic diagram of a black and white spaced boxcard according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a mobile phone lens module focusing a target focusing picture according to an embodiment of the present invention;
FIG. 7 is another schematic diagram illustrating a mobile phone lens module focusing a target focusing picture according to an embodiment of the present invention;
FIG. 8 is a schematic flow chart of an alternative detection method in an embodiment of the present invention;
fig. 9 is a schematic flow chart of another alternative detection method in the embodiment of the present invention.
Detailed Description
It should be understood that the embodiments described herein are only for explaining the technical solutions of the present invention, and are not intended to limit the scope of the present invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a Personal Digital Assistant (PDA), a tablet computer (PAD), a Portable Multimedia Player (PMP), a navigation device, etc., and a stationary terminal such as a digital TV, a desktop computer, etc. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a hardware configuration diagram of an alternative mobile terminal 100 implementing various embodiments of the present invention, and as shown in fig. 1, the mobile terminal 100 may include a wireless communication unit 110, an audio/video (a/V) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, a power supply unit 190, and the like. Fig. 1 illustrates the mobile terminal 100 having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. The elements of the mobile terminal 100 will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. Broadcast associated information is also providedMay be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting system of a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal 100. The wireless internet module 113 may be internally or externally coupled to the terminal. The wireless internet access technology referred to by the wireless internet module 113 may include Wireless Local Area Network (WLAN), wireless compatibility authentication (Wi-Fi), wireless broadband (Wibro), worldwide interoperability for microwave access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbeeTMAnd so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal 100. A typical example of the location information module 115 is a Global Positioning System (GPS) module 115. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 122, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the cameras 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 121 may be provided according to the construction of the mobile terminal 100. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data to control various operations of the mobile terminal 100 according to a command input by a user. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The sensing unit 140 detects a current state of the mobile terminal 100 (e.g., an open or closed state of the mobile terminal 100), a position of the mobile terminal 100, presence or absence of contact (i.e., touch input) by a user with the mobile terminal 100, an orientation of the mobile terminal 100, acceleration or deceleration movement and direction of the mobile terminal 100, and the like, and generates a command or signal for controlling an operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide-type mobile phone, the sensing unit 140 may sense whether the slide-type phone is opened or closed. In addition, the sensing unit 140 can detect whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled with an external device.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port (a typical example is a Universal Serial Bus (USB) port), a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means.
The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal 100. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal 100 is accurately mounted on the cradle.
The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, mobile terminal 100 may include two or more display units (or other display devices), for example, mobile terminal 100 may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The alarm unit 153 may provide an output to notify the mobile terminal 100 of the occurrence of an event. Typical events may include call reception, message reception, key signal input, touch input, and the like. In addition to audio or video output, the alarm unit 153 may provide output in different ways to notify the occurrence of an event. For example, the alarm unit 153 may provide an output in the form of vibration, and when a call, a message, or some other incoming communication (communicating communication) is received, the alarm unit 153 may provide a tactile output (i.e., vibration) to inform the user thereof. By providing such a tactile output, the user can recognize the occurrence of various events even when the user's mobile phone is in the user's pocket. The alarm unit 153 may also provide an output notifying the occurrence of an event via the display unit 151 or the audio output module 152.
The memory 160 may store software programs or the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, etc.) that has been output or is to be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal 100. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for reproducing or playing back multimedia data, and the multimedia module 181 may be constructed within the controller 180 or may be constructed to be separated from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, the mobile terminal 100 has been described in terms of its functions. Hereinafter, the slide-type mobile terminal 100 among various types of mobile terminals 100, such as a folder-type, bar-type, swing-type, slide-type mobile terminal 100, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal 100, and is not limited to the slide type mobile terminal 100.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which the mobile terminal 100 according to the present invention is capable of operating will now be described with reference to fig. 2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 2 may include multiple BSCs 2750.
Each BS 270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS 270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz, 5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS 270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each partition of a particular BS 270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the system. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several satellites 300 are shown, for example, Global Positioning System (GPS) satellites 300 may be employed. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal 100 may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS 270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS 270 to transmit forward link signals to the mobile terminal 100.
The mobile communication module 112 of the wireless communication unit 110 in the mobile terminal accesses the mobile communication network based on the necessary data (including the user identification information and the authentication information) of the mobile communication network (such as the mobile communication network of 2G/3G/4G, etc.) built in the mobile terminal, so as to transmit the mobile communication data (including the uplink mobile communication data and the downlink mobile communication data) for the services of web browsing, network multimedia playing, etc. of the mobile terminal user.
The wireless internet module 113 of the wireless communication unit 110 implements a function of a wireless hotspot by operating a related protocol function of the wireless hotspot, the wireless hotspot supports access by a plurality of mobile terminals (any mobile terminal other than the mobile terminal), transmits mobile communication data (including uplink mobile communication data and downlink mobile communication data) for mobile terminal user's services such as web browsing, network multimedia playing, etc. by multiplexing the mobile communication connection between the mobile communication module 112 and the mobile communication network, since the mobile terminal essentially multiplexes the mobile communication connection between the mobile terminal and the communication network for transmitting mobile communication data, the traffic of mobile communication data consumed by the mobile terminal is charged to the communication tariff of the mobile terminal by a charging entity on the side of the communication network, thereby consuming the data traffic of the mobile communication data included in the communication tariff contracted for use by the mobile terminal.
Fig. 3 is an electrical block diagram of the camera.
The photographing lens 1211 is composed of a plurality of optical lenses for forming an object image, and is a single focus lens or a zoom lens. The photographing lens 1211 is movable in the optical axis direction under the control of the lens driver 1221, and the lens driver 1221 controls the focal position of the photographing lens 1211 in accordance with a control signal from the lens driving control circuit 1222. The lens drive control circuit 1222 performs drive control of the lens driver 1221 in accordance with a control command from the microcomputer 1217.
An image pickup device 1212 is disposed on the optical axis of the photographing lens 1211 near the position of the object image formed by the photographing lens 1211. The image pickup device 1212 is used to pick up an image of an object and acquire picked-up image data. Photodiodes constituting each pixel are two-dimensionally arranged in a matrix on the image pickup device 1212. Each photodiode generates a photoelectric conversion current corresponding to the amount of received light, and the photoelectric conversion current is charged by a capacitor connected to each photodiode. A bayer RGB color filter is disposed on the front surface of each pixel.
The image pickup device 1212 is connected to an image pickup circuit 1213, and the image pickup circuit 1213 performs charge accumulation control and image signal reading control in the image pickup device 1212, performs waveform shaping after reducing reset noise for the read image signal (analog image signal), and further performs gain improvement or the like so as to obtain an appropriate signal level.
The imaging circuit 1213 is connected to an a/D converter 1214, and the a/D converter 1214 performs analog-to-digital conversion on the analog image signal and outputs a digital image signal (hereinafter referred to as image data) to the bus 1227.
The bus 1227 is a transfer path for transferring various data read out or generated inside the camera. The a/D converter 1214 described above is connected to the bus 1227, and further connected to an image processor 1215, a JPEG processor 1216, a microcomputer 1217, an SDRAM (Synchronous Dynamic random access memory) 1218, a memory interface (hereinafter referred to as memory I/F)1219, and an LCD (Liquid Crystal Display) driver 1220.
The image processor 1215 performs various image processing such as OB subtraction processing, white balance adjustment, color matrix operation, gamma conversion, color difference signal processing, noise removal processing, synchronization processing, and edge processing on image data output from the image pickup device 1212. The JPEG processor 1216 compresses the image data read out from the SDRAM1218 in a JPEG compression method when recording the image data in the recording medium 1225. The JPEG processor 1216 decompresses JPEG image data for image reproduction display. When decompression is performed, a file recorded in the recording medium 1225 is read out, decompression processing is performed in the JPEG processor 1216, and the decompressed image data is temporarily stored in the SDRAM1218 and displayed on the LCD 1226. In the present embodiment, the JPEG system is used as the image compression/decompression system, but the compression/decompression system is not limited to this, and other compression/decompression systems such as MPEG, TIFF, and h.264 may be used.
The microcomputer 1217 functions as a control unit of the entire camera, and collectively controls various processing sequences of the camera. The microcomputer 1217 is connected to an operation unit 1223 and a flash memory 1224.
The operation unit 1223 includes, but is not limited to, physical keys or virtual keys, which may be various input buttons such as a power button, a photographing key, an editing key, a moving image button, a reproduction button, a menu button, a cross key, an OK button, a delete button, and an enlargement button, and various operation controls such as various input keys, and detects operation states of these operation controls.
The detection result is output to the microcomputer 1217. A touch panel is provided on the front surface of the LCD1226 as a display, and a touch position of the user is detected and output to the microcomputer 1217. The microcomputer 1217 executes various processing sequences corresponding to the user's operation according to the detection result of the operation position from the operation unit 1223.
The flash memory 1224 stores programs for executing various processing sequences of the microcomputer 1217. The microcomputer 1217 controls the entire camera according to the program. The flash memory 1224 stores various adjustment values of the camera, and the microcomputer 1217 reads the adjustment values and controls the camera in accordance with the adjustment values.
The SDRAM1218 is an electrically rewritable volatile memory for temporarily storing image data and the like. The SDRAM1218 temporarily stores the image data output from the a/D converter 1214 and the image data processed by the image processor 1215, JPEG processor 1216, and the like.
The memory interface 1219 is connected to the recording medium 1225, and performs control for writing and reading image data and data such as a file header added to the image data to and from the recording medium 1225. The recording medium 1225 is, for example, a recording medium such as a memory card that can be attached to and detached from the camera body, but is not limited to this, and may be a hard disk or the like that is built in the camera body.
The LCD driver 1210 is connected to the LCD1226, and stores the image data processed by the image processor 1215 in the SDRAM1218, and when display is required, reads the image data stored in the SDRAM1218 and displays the image data on the LCD1226, or the image data compressed by the JPEG processor 1216 is stored in the SDRAM1218, and when display is required, the JPEG processor 1216 reads the compressed image data in the SDRAM1218, decompresses the data, and displays the decompressed image data through the LCD 1226.
The LCD1226 is disposed on the back surface of the camera body and displays an image. The LCD1226LCD is not limited to this, and various display panels (LCD1226) such as organic EL may be used.
Based on the above-mentioned hardware structure of the mobile terminal, the communication system, and the electrical structure schematic diagram of the camera, various embodiments of the present invention are proposed.
Fig. 4 is an alternative structural schematic diagram of the detection device in the embodiment of the present invention. As shown in fig. 4, the detection apparatus provided in the embodiment of the present invention may include: a focusing module 401, an acquisition module 402, an analysis module 403 and a determination module 404; wherein,
the focusing module 401 is configured to trigger the mobile phone lens module to focus the target focusing picture.
Here, the focusing module 401 is specifically configured to: and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
Specifically, when the Detection device in the embodiment of the present invention is used to detect a lens module of a mobile phone, a target focusing picture is first prepared, and the target focusing picture is a designated graphic card, which has to have relatively dense edges and be uniformly distributed, such as a small black-and-white-spaced square-frame graphic card shown in fig. 5, to ensure that each window can obtain a relatively accurate Phase Detection (PD) value. Then, the mobile phone is placed on the holder, the card occupies the whole mobile phone picture, and the distance between the mobile phone and the card is smaller than the hyperfocal distance and larger than 120 cm; triggering the mobile phone lens module to focus the target focusing picture; referring to fig. 6, a schematic diagram of a mobile phone photographing application (e.g., a camera) focusing on the target focusing picture shown in fig. 5; triggering primary focusing to focus; if the distance between the mobile phone and the card exceeds the hyperfocal distance, the change of the phase detection value is small, and the detection is difficult; conversely, if the distance is too small, the effect of defocusing will be obtained. Considering that the phase detection value itself will be inaccurate when the defocus is serious, the focus is performed once during the test.
The acquisition module 402 is configured to acquire phase detection values of at least two areas in an object picture captured by the mobile phone lens module.
Here, the at least two regions include at least any two or more of:
the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
In practice, 5 regions may be referenced simultaneously: the mobile phone lens module captures a central area, an upper left area, a lower left area, an upper right area and a lower right area of an object picture. Referring to fig. 7, when the mobile phone photographing application is used to focus the target focusing picture shown in fig. 5, the center region 701, the upper left region 702, the lower left region 703, the upper right region 704, and the lower right region 705 of the target picture captured by the mobile phone lens module are shown.
The acquisition module 402 acquires the phase detection values of a plurality of frames in a specified number in succession in the 5 windows in the object picture captured by the mobile phone lens module.
An analyzing module 403, configured to analyze the phase detection values of the at least two regions to obtain an analysis result.
Here, the analysis module 403 is specifically configured to:
respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2;
and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
Taking the at least two regions as the above 5 regions as an example, the analysis module 403 calculates an average value of phase detection values of N frames in each of the 5 regions; counting the maximum value and the minimum value of the average values according to the average value of the phase detection values of the N frames of each region; calculating the difference value between the maximum value and the minimum value; the difference is the analysis result.
A determining module 404, configured to determine that the CMOS flatness of the mobile phone lens module meets a standard when the analysis result meets a preset condition.
In practice, since a CMOS sensor (sensor) of the lens module cannot guarantee 100% flatness in a production process, and an error of a phase detection value is added, a threshold is preset in the embodiment of the present invention when determining the CMOS flatness.
Here, the determining module 404 is specifically configured to: judging whether the difference value between the maximum value and the minimum value in each average value is less than or equal to a threshold value:
if so (namely, judging that the difference value between the maximum value and the minimum value in the average values is less than or equal to a threshold value), determining that the CMOS flatness of the mobile phone lens module reaches the standard and meets the requirement;
otherwise (namely, judging that the difference value between the maximum value and the minimum value in the average values is larger than the threshold value), determining that the CMOS flatness of the mobile phone lens module does not reach the standard, namely the CMOS flatness of the mobile phone lens module is poor, and the mobile phone lens module is a defective product.
In the embodiment of the present invention, the PD value can represent the interpolation of the current lens (lens) position and the lens position in focusing, and if the CMOS is flat, the PD values of different areas of the whole screen should be consistent. In practice, Phase Detection Auto Focus (PDAF) is a focusing method based on PD value in recent years; it should be noted that the application of the phase focusing technology in the field of digital cameras is already mature, and the phase focusing technology is still in the beginning stage in the field of smart phones. The phase focusing has the advantages that: the focusing can be completed by only one-time calculation, the focusing speed is very high, and the calculation load of a processor is reduced. The phase focusing has the following disadvantages: the lens is easy to be out of focus under the environment of weak light.
In the prior art, a mobile phone manufacturer cannot effectively detect that the CMOS flatness of the mobile phone lens module is poor, so that the mobile phone lens module greatly influences the photographing effect of the mobile phone, the photographing single side is blurred, and the imaging quality of photographing of the mobile phone is reduced. Compared with the prior art, in the detection device provided by the embodiment of the invention, the focusing module triggers the mobile phone lens module to focus the target focusing picture, the acquisition module acquires the PD values of at least two areas in the object picture captured by the mobile phone lens module, the analysis module analyzes the PD values of the at least two areas to obtain an analysis result, and the determination module determines that the CMOS flatness of the mobile phone lens module reaches the standard when the analysis result meets the preset condition. That is to say, for the camera with the PD, under the condition that no special measuring equipment is used, after focusing is performed by facing the mobile phone to the target focusing diagram, the PD value of a typical region in the whole picture is collected, and the PDs of different regions are analyzed, so as to detect whether the flatness of the CMOS reaches the standard or not.
Fig. 8 is an alternative flow chart of the detection method in the embodiment of the present invention. As shown in fig. 8, the detection method provided in the embodiment of the present invention includes:
step 801, triggering a mobile phone lens module to focus a target focusing picture;
step 802, collecting phase detection values of at least two areas in an object picture captured by the mobile phone lens module;
step 803, analyzing the phase detection values of the at least two regions to obtain an analysis result;
and step 804, when the analysis result meets a preset condition, determining that the CMOS flatness of the mobile phone lens module reaches the standard.
Here, the main body of the detection method may be the detection device described in any of the above embodiments.
In the embodiment of the invention, a target focusing picture is focused by triggering the mobile phone lens module, phase detection values of at least two areas in an object picture captured by the mobile phone lens module are collected, the phase detection values of the at least two areas are analyzed to obtain an analysis result, and when the analysis result meets a preset condition, the CMOS flatness of the mobile phone lens module is determined to reach the standard. That is to say, for the camera with phase detection, under the condition of not using special measuring equipment, through letting the cell-phone carry out the focusing to the target focusing picture, gather the phase detection value of typical region in the whole picture to do the analysis to the phase detection of different regions, can detect out whether CMOS roughness is up to standard, have easy operation, measure quick characteristics, can effectively detect out bad lens module, improve the yields of camera when the cell-phone dispatches from the factory.
On the basis of the above embodiment, one possible implementation manner of step 801 includes: and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
Optionally, the at least two regions at least include any two of the following regions: the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
On the basis of the foregoing embodiment, a possible implementation manner of step 803 includes: respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2; and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
On the basis of the foregoing embodiment, a possible implementation manner of step 804 includes: and when the difference value between the maximum value and the minimum value in the average values is less than or equal to a threshold value, determining that the CMOS flatness of the mobile phone lens module reaches the standard.
Fig. 9 is a schematic flow chart of another alternative detection method in the embodiment of the present invention. As shown in fig. 9, the main steps of the detection method provided by the embodiment of the present invention include:
step 901, entering a detection program; and pre-selecting a graphic card: a special card is prepared, which must have a relatively dense edge and be uniformly distributed, such as the small black and white boxes shown in fig. 5, to ensure that each window can obtain a relatively accurate PD value.
And 902, placing the mobile phone on a test holder, enabling the test card to be parallel to the mobile phone, enabling the distance between the mobile phone and the test card to be smaller than the hyperfocal distance and larger than 120cm, and triggering one-time focusing to focus. The card must fill the entire picture.
And step 903, collecting the PD values of a plurality of latest frames of 5 windows, wherein the 5 windows are respectively a center, an upper left part, an upper right part, a lower left part and a lower right part.
And 904, respectively counting the average PD values of a plurality of latest frames of 5 windows, and counting the maximum PD value and the minimum PD value.
Step 905, judging whether the difference value between the maximum PD value (MAX) and the minimum PD value (MIN) is larger than a threshold value; if yes, go to step 906; otherwise go to step 907.
Here, since the lens module CMOS sensor cannot guarantee 100% flatness in the production process, and the error of PD is added, a value should be set for the flatness determination, if the measured mobile phone lens module is greater than the set value, the measured mobile phone lens module is determined to be a defective product, and if the measured mobile phone lens module is less than or equal to the set value, the measured mobile phone lens module can be determined to be a CMOS flat lens module.
And 906, judging that the flatness of the mobile phone lens module is poor.
And 907, judging that the flatness of the mobile phone lens module meets the requirements.
The detection method provided by the embodiment of the invention can accurately detect the flatness of the CMOS of the mobile phone by an algorithm and a special focusing diagram without using special measuring equipment for the camera with the PD, has the characteristics of simple operation and quick measurement, effectively detects a bad lens module and improves the yield of the camera when the mobile phone leaves a factory.
The detection method provided by the embodiment of the invention can be applied to a detection device, the functions realized by the detection method can be realized by calling a program code through a processor in the detection device, and the program code can be saved in a computer storage medium.
Here, it should be noted that: the above description of the embodiment of the apparatus is similar to the above description of the embodiment of the method, and has similar beneficial effects to the embodiment of the method, and therefore, the description thereof is omitted. For technical details that are not disclosed in the method embodiment of the present invention, please refer to the description of the apparatus embodiment of the present invention for understanding, and therefore, for brevity, will not be described again.
Here, it should be noted that: the description of the terminal embodiment is similar to the description of the method, and has the same beneficial effects as the method embodiment, and therefore, the description is omitted. For technical details that are not disclosed in the embodiment of the method of the present invention, those skilled in the art should refer to the description of the embodiment of the terminal of the present invention to understand that, for brevity, detailed description is omitted here.
The detection module, the option display module, the hiding module and the icon display module in the terminal provided by the embodiment of the invention can be realized by a processor in the terminal; of course, the implementation can also be realized through a specific logic circuit; in the course of a particular embodiment, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A lens inspection apparatus, comprising:
the focusing module is used for triggering the mobile phone lens module to focus the target focusing picture;
the acquisition module is used for acquiring phase detection values of at least two areas in an object picture captured by the mobile phone lens module;
the analysis module is used for analyzing the phase detection values of the at least two areas to obtain an analysis result;
the determining module is used for determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module meets the standard when the analysis result meets the preset condition; and the preset condition is used for judging the flatness of the CMOS according to the analysis result and a threshold value.
2. The lens detection apparatus of claim 1, wherein the focusing module is specifically configured to:
and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
3. The lens detection apparatus according to claim 1, wherein the at least two regions include at least any two of: the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
4. The lens barrel detection apparatus according to claim 1, wherein the analysis module is specifically configured to: respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2; and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
5. The lens barrel detection apparatus according to claim 4, wherein the determination module is specifically configured to: and when the difference value between the maximum value and the minimum value in the average values is less than or equal to the threshold value, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard.
6. A shot detection method, the method comprising:
triggering the mobile phone lens module to focus the target focusing picture;
acquiring phase detection values of at least two areas in an object picture captured by the mobile phone lens module;
analyzing the phase detection values of the at least two regions to obtain an analysis result;
when the analysis result meets a preset condition, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard; and the preset condition is used for judging the flatness of the CMOS according to the analysis result and a threshold value.
7. The method of claim 6, wherein the triggering the mobile phone lens module to focus the target focusing picture comprises:
and when the distance between the mobile phone lens module and the target focusing picture is less than the hyperfocal distance and more than 120cm, triggering the mobile phone lens module to focus the target focusing picture.
8. The method of claim 6, wherein the at least two regions comprise at least any two of: the central area of the object picture captured by the mobile phone lens module; the mobile phone lens module captures the upper left area of an object picture; the left lower area of the object picture captured by the mobile phone lens module; the upper right area of the object picture captured by the mobile phone lens module; and the right lower area of the object picture captured by the mobile phone lens module.
9. The method of claim 6, wherein analyzing the phase detection values of the at least two regions to obtain an analysis result comprises:
respectively calculating the average value of the phase detection values of N frames of each of the at least two regions; wherein N is an integer greater than or equal to 2;
and determining the difference value between the maximum value and the minimum value in the average values according to the average value of the phase detection values of the N frames of each area.
10. The method of claim 9, wherein determining that the CMOS flatness of the phone lens module meets the predetermined condition comprises:
and when the difference value between the maximum value and the minimum value in the average values is less than or equal to the threshold value, determining that the flatness of the complementary metal oxide semiconductor CMOS of the mobile phone lens module reaches the standard.
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| CN105451017A (en) * | 2015-12-29 | 2016-03-30 | 努比亚技术有限公司 | Camera module photosensitive quality detection method and device |
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| JP2000341703A (en) * | 1999-05-26 | 2000-12-08 | Fuji Photo Film Co Ltd | Method and device for generating signal and recording medium |
| US20010053557A1 (en) * | 2000-02-03 | 2001-12-20 | Keun-Hyung Park | Inspection of defects on the circumference of semiconductor wafers |
| CN102629978A (en) * | 2012-03-26 | 2012-08-08 | 深圳英飞拓科技股份有限公司 | High-definition network hemisphere with flatness of target face detected by automatic focusing |
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