JP6292852B2 - Imaging device used for grain discrimination - Google Patents

Description

The present invention is capable of detecting body split grains and white immature grains with high efficiency, and also detecting highly efficiently such as colored grains on the back side of the grain on the surface far from the image sensor in the upper imaging / illumination unit. It is related with the imaging device used for the grain discrimination which exhibits the outstanding function that can be obtained and can obtain the high quality image data of the back surface of a grain .

  Regardless of the country of origin and production area, agricultural products, especially grain grains such as brown rice grains and wheat grains, are inspected by the national government (Ministry of Agriculture, Forestry and Fisheries) in order to conduct fair and smooth transactions with producers. Based on the above, each quality is rated as 1st grade, 2nd grade, etc.

  Such a rating is executed based on various factors, one of which is a rating by visual inspection.

  Ratings based on visual inspection are broadly divided into numerical standards (colored grains, broken grains, damaged grains, etc.) and standards that cannot be expressed numerically (referred to as traits, grains There are two types, such as fullness and gloss.

  There is a limit standard product created by the government for grains that have standards defined by numerical values at present, and standard products are created for standards that cannot be expressed numerically. Both of these are based on real grain.

  As for standard products, the national government has created the actual products and distributed them to the regional agricultural administration offices and registered inspection organizations that are 8 blocks nationwide. In reality, it is not sufficient in terms of reliability of appearance inspection because color change and quality deterioration occur.

  Recently, due to the lack of personnel due to administrative reforms and other reasons, it has become difficult to create a national standard product, so the country plans to distribute a photo of the standard product.

  However, there are problems such as variations in ink due to printers when printing photographs, variations due to models when actually printing, and it is difficult to create equivalent ones.

  In Patent Document 1, an illuminating unit that illuminates rice grains, an imaging device that captures the rice grains illuminated by the illuminating unit with an imaging camera and obtains an analog image signal, and binarization processing of the obtained analog image signal are performed. Image conversion means for converting into a digital signal representing light and shade, image processing of the digital image signal obtained by the image conversion means, a density distribution histogram relating to density is created, and rice grains and adhered wrinkles are produced based on this A rice grain appearance inspection apparatus for binarization discrimination has been proposed.

  In Patent Document 2, a plurality of grains are imaged in a method of calculating a weight ratio by grade in a grain appearance quality discriminating apparatus that images the grain by an imaging device and discriminates the quality of the grain based on the imaging data. And determining the quality of the plurality of grains based on the imaging data, totaling the number of pixels in the imaging data of the plurality of grains whose quality has been determined by the quality, and the number of pixels totaled by the quality Is multiplied by a weight conversion coefficient per pixel that is set in advance for each grade, and the number of pixels is converted to a weight for each grade, and a weight ratio for each grain is calculated based on the weight for each grade. Technology has been proposed.

However, including these Patent Documents 1 and 2, it is possible to detect torn and white immature grains with high efficiency, and coloring grains on the back side of the grain on the surface far from the image sensor in the upper imaging / illumination unit, etc. The present situation is that there is no imaging device used for grain discrimination that exhibits an excellent function of being able to detect the image with high efficiency and obtaining high-quality image data of the back side of the grain .

JP-A-2005-43260 JP 2011-242284 A

Problems which the invention is to provide, it is possible to highly efficiently Dowaritsubu and white immature grains detected without aligning the grain, grain in the far surface from the image sensor in the upper imaging and lighting unit 2. Description of the Related Art Conventionally, there has been an imaging device used for grain discrimination that can be detected with high efficiency, such as colored grains on the grain back side, and can exhibit high quality image data on the back side of the grain. It is a point that does not exist.

The imaging apparatus of the present invention constitutes a flat tray on which an arbitrary number of grains to be discriminated are placed, and a reflected image light source that emits illumination light for imaging from above the grains placed on the tray. An upper imaging / illuminating unit comprising an upper light emitting unit, an image sensor for imaging the grain, and a transmission image for irradiating imaging illumination light from below the grain placed on the tray A light source that has a plurality of light emitting points that can control the amount of light and has a light source that can irradiate the grain with transmitted light by whole surface light emission or transmitted light by spot light emission, a temperature sensor that detects the ambient temperature, and on the tray A lower illumination unit comprising: a vibration sensor for detecting movement of the grain; light emission control of the upper light emitting unit of the upper imaging / illumination unit; operation control of the image sensor; light emission control of the light emitter; the temperature sensor And a control unit for controlling the operation of the vibration sensor, and having a.

According to the first aspect of the invention, it is possible to detect torn and white immature grains with high efficiency, and to detect colored grains on the grain back side on the face far from the image sensor in the upper imaging / illumination unit. It can be detected with high efficiency and can exhibit the excellent function of being able to obtain high-quality image data of the backside of the grain. Furthermore , the temperature signal around the grain and the movement of the grain It is possible to realize and provide an image pickup apparatus used for grain discrimination that also has a function of being able to obtain a signal indicating.

FIG. 1 is a block diagram showing the configuration of a grain discrimination system that combines an imaging device and an operation panel type information terminal according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating the function of the data processing unit in the grain discrimination system that combines the imaging device and the operation panel type information terminal according to the present embodiment. FIG. 3 is an actual configuration diagram of the imaging apparatus according to the present embodiment. FIG. 4 is a schematic end view of the upper imaging / illuminating unit constituting the imaging apparatus according to the present embodiment. FIG. 5 is a flowchart showing the processing contents of the application program according to the present embodiment. FIG. 6 is a diagram illustrating an initial screen of the grain discrimination process based on the application program according to the present embodiment. FIG. 7 is a diagram illustrating an example of a result screen of the grain discrimination process based on the application program according to the present embodiment. FIG. 8 is a diagram illustrating an example of a torn grain image in a grain discrimination system in which an imaging apparatus according to the present embodiment and an operation panel type information terminal are combined. FIG. 9 is a schematic explanatory view showing the density state of the body split grain image corresponding to the body split grain (no crack). FIG. 10 is a schematic explanatory view showing the density state of the body split grain image corresponding to the body split grain (with cracks). FIG. 11 is a schematic explanatory view showing images obtained as a result of imaging of cardiac white grains using transmitted light (entire surface) and imaging of cardiac white grains using transmitted light (spots) in addition to imaging of cardiac white grains using reflected light. It is. FIG. 12 shows imaging of colored particles (front) using reflected light, imaging of colored particles (back), imaging of colored particles using transmitted light (entire surface) (back), and imaging of colored particles using transmitted light (spots). It is a schematic explanatory drawing which shows each image of the result of having performed back).

The present invention is capable of detecting torn and white immature grains with high efficiency without aligning grains, and coloring grains on the back side of the grains on the surface far from the image sensor in the upper imaging / illumination unit, etc. high efficiency can be detected, the object of providing an imaging device for use in grain discrimination that can exhibit an excellent function that it is possible to obtain a high-quality image data of the back surface of the grain, determine the target A flat tray on which an arbitrary number of grains are placed, an upper light-emitting unit that constitutes a reflected image light source that emits illumination light for imaging from the upper side of the grains placed on the tray, and the grains An upper image pickup / illumination unit comprising an image sensor for image pickup, and a transmission image light source for irradiating image pickup illumination light from the lower side of the grain placed on the tray and capable of controlling the amount of light Luminous point A light emitter capable of irradiating the grain with transmitted light by multiple-surface light emission or transmitted light by spot light emission, a temperature sensor for detecting ambient temperature, and a vibration sensor for detecting movement of the grain on the tray A lower illumination unit, and a control unit that performs light emission control of the upper light emitting unit of the upper imaging / illumination unit, operation control of the image sensor, light emission control of the light emitter, operation control of the temperature sensor, and vibration sensor. Realized by having a configuration.

Hereinafter, an imaging apparatus according to an embodiment of the present invention will be described in detail.

An imaging apparatus 21 according to an embodiment of the present invention, to FIG. 1 for the image pickup device 21 and the operation panel type information terminal 1 and the kernel discriminating system 61 combines, for該穀particle discrimination system 61 application program, and storage medium This will be described with reference to FIG.

  First, with reference to FIG. 1 thru | or FIG. 4, the grain discrimination | determination system 61 which combined the imaging device 21 and the operation panel type information terminal 1 which concern on a present Example is explained in full detail.

As shown in FIGS. 1 and 3, the imaging device 21 according to the present embodiment includes an upper imaging / illumination unit 22, a lower illumination unit 23, and a tray 24 on which an arbitrary number of grains to be discriminated are placed. It has.

  The upper imaging / illumination unit 22 includes a power supply unit 25, a unit control unit 26 configured by a CPU or DSP (Digital Signal Processor) that performs control of the entire upper imaging / illumination unit 22, and a unit control unit 26. The work memory 27 to be controlled includes, for example, a communication interface 28 that transmits the appearance image data of the grain to the outside wirelessly or by wire, a temperature sensor 29 that detects the ambient temperature, and a lighting controller 30.

  And the upper light emission part 31 which comprises the reflected image light source using the LED (Light Emitting Diode) element 31A which light-emits white light, for example is connected to the said illumination controller 30, and it illuminates toward the tray 24 from the upper light emission part 31 It is configured to emit light.

  The upper imaging / illuminating unit 22 has an imaging optical system 32 that faces an arbitrary number of grains on the tray 24, an image sensor that captures grains and generates appearance image data (color image data). A color image sensor) 33, and a data processing unit 34 that captures image data transmitted from the image sensor 33 under the control of the unit control unit 26 and stores it in the image memory 35. The optical system 32 and the image sensor 33 constitute an imaging unit.

  The data processing unit 34 is configured by, for example, a field programmable gate array (FPGA), which is a kind of semiconductor device that can be programmed by the user.

  As shown in FIG. 2, the data processing unit 34 performs various controls such as reading image data from the image sensor 33, storing the image data in the image memory 35, and transmitting the image data to the communication interface 28. Thus, the program data programmed by the user is stored in the IC chip.

  As shown in FIG. 1, the lower illumination unit 23 includes a lower illumination unit control unit 37 configured by a power source 36, for example, a CPU, and the lower illumination unit control unit 37 performs illumination from the upper light emitting unit 31. The operation of the light quantity sensor 38 for detecting light, the temperature sensor 39 for detecting the ambient temperature, and the vibration sensor 40 for detecting the movement of the grain on the tray 24 are each controlled.

  Note that the lower illumination unit controller 37 may be eliminated, and the unit controller 26 may control each element of the lower illumination unit 23.

  Further, the lower illumination unit controller 37 constitutes a lower emission that constitutes a transmission image light source comprising an LCD or the like that irradiates the grain with illumination light from the lower side of the tray 24 via the imaging illumination controller 41. Unit (for example, 10.4 inch LCD with backlight) 43 is configured to control light emission.

  The lower light emitting unit 43 is a transmitted light type and is formed of a light emitter having a plurality of light emitting points that can arbitrarily control the intensity of light.

  In this case, the imaging illumination controller 41 may include an image interface for an LCD (Liquid Crystal Display) having an LVDS (Low Voltage Differential Signaling) conversion function.

  Next, a touch panel type information terminal 1 which is an example of an operation panel type information terminal will be described with reference to FIG.

  The touch panel type information terminal 1 includes, for example, a thin rectangular parallelepiped terminal main body 2 and an operator who performs, for example, grain discrimination arranged on the surface portion of the terminal main body 2 performs a tap operation with a finger etc. And a touch panel type operation display unit 3 for displaying information and the like.

Moreover, the terminal body 2, as shown in FIG. 1, the details of the control program and the embodiment for carrying out the overall control program memory 4 for storing the application program to be described later, executes the overall control Control unit 10 that stores, for example, the limit standard product for inspection of brown rice grains, etc. created by the country, various image data corresponding to the standard product, character information based on the standard, various icons for guiding the screen operation, judgment item information, etc. In addition, the terminal storage unit 5 that stores the captured image data, and also the determination result information, the image processing unit 11 that performs image processing of the captured image data, and the e-mail processing that is preinstalled in the terminal body 2 Communication processing for transmitting / receiving data to / from a computer such as an inspection head office to which an inspector belongs, for example, via the unit 7 and the Internet network N previously installed in the terminal body 2 8, between the storage medium interface 9 for reading data from the external storage medium 12 or writing data to the external storage medium 12 and the communication interface 28 in the upper imaging / illumination unit 22, wirelessly or wiredly The communication interface 13 for communication is provided as a main element.

  As described above, the terminal main body 2 stores a control program for executing overall control in the program memory 4 and an application program to be described later in detail, and the terminal storage unit 5 stores, for example, for inspection of brown rice grains. Discrimination reference image information consisting of limit reference products, various image data corresponding to standard products, character information based on standards, various icons for guiding screen operations, and the like, and further, for example, determination regarding brown rice grains in the terminal storage unit 5 Item information is stored.

  The imaging device 21 and the touch panel type information terminal 1 can transmit image data by a cable connection method, a method using a memory card, or the like in addition to a wireless or wired communication method.

  The application program according to the present embodiment is mounted on the touch panel type information terminal 1 and stores image data of grains composed of an arbitrary number of brown rice grains and the like imaged by the imaging device 21 in the terminal storage unit 5, and Perform the grain quality determination calculation based on various image data related to the limit standard product and standard product for image data of an arbitrary number of grains, respectively determine the grain quality of the image data of an arbitrary number of captured grains, , A process for obtaining a determination result associated with the determination item information, a process for storing the determination result in the terminal storage unit 5, and the determination result stored in the terminal storage unit 5 for a touch operation on the touch panel type operation display unit 3. In response, the touch panel type operation display unit 3 is configured to execute processing.

  As judgment item information by the application program according to the present embodiment, for example, for brown rice grains, sizing (presence or absence of skin slip), immature grains (milk white, base immature, blue immature, heart white, belly white, other immature) , Dead rice (white dead rice / blue dead rice), colored grains (full-colored / partially colored / red rice), damaged grains (germination, sprout, torso, kimono, insect damage, disease, crushed grains, brown rice) Examples can be given.

  In addition, for polished rice grains, normal grains (no germs, germ traces, germ smoothness, germ form), powdered grains (whole powder, half powder, heart white, belly white), damaged grains (damage, shape, Other examples include damage and crushed grains, colored grains (overall coloring, stink bug coloring, nematode coloring, lesion coloring), and different types of grains.

  Further, the discrimination result information by the application program according to the present embodiment includes a thumbnail image with a discrimination item for each discriminating grain, the number of grains and the composition ratio (grain number%, mass conversion%) for each discriminating grain, and particle shape analysis. Examples of such histograms can be given.

  In addition, the application program according to the present embodiment is a process for enlarging / reducing an image displayed on the touch panel type operation display unit 3 according to a finger operation on the touch panel type operation display unit 3, a rotation process in the case of a stereoscopic image, and the like. The touch panel type information terminal 1 can be effectively functioned as a grain appearance inspection means.

  That is, by using the touch panel type information terminal 1 equipped with the application program having the functions as described above, the inspector can display various images relating to the grains stored in the touch panel type information terminal 1 in advance on the touch panel type operation display unit. By simply executing the tap operations on 3 in order, it can be clearly seen, and the appearance inspection of grains such as brown rice to be inspected can be accurately performed.

  In addition, since the image can be enlarged or the three-dimensional grain image of the limit standard product can be rotated and displayed by operating the screen, the back side and shape of the grain can be checked very easily, and inspection can be performed. The accuracy of appearance discrimination of grains such as brown rice should be expected.

  Next, with reference to FIG. 3 and FIG. 4, a substantial configuration of each element of the upper imaging / illumination unit 22 and the lower illumination unit 23 will be outlined.

  The upper imaging / illuminating unit 22 includes a box-shaped upper casing 51, and the above-described elements are mounted on each part of the upper casing 51.

In FIG. 3 , the power supply unit 25, the data processing unit 34, the image sensor 33, and the lens 32 </ b> A constituting the optical system 32 facing the lower illumination unit 23, which are a part of the upper imaging / illumination unit 22, a plurality of components. The LED element 31 </ b> A is used to arrange an upper light emitting unit 31 facing the lower illumination unit 23, and a constant voltage circuit 44 that applies a predetermined voltage to the upper light emitting unit 31.

  The lower illumination unit 23 is configured as a transmitted light type and includes a box-shaped lower casing 62. As shown in FIG. 3, the lower casing 62 includes the upper light emitting unit 31 and the optical system 32. The lower light emitting portion 43 is disposed so as to face the lens 32A constituting the above structure, the tray 24 is placed on the lower light emitting portion 43, and the power source portion 36 is disposed in the lower casing 62. , A configuration in which a lower illumination unit controller 37 and an imaging illumination controller 41 are arranged is shown.

  The lower illumination unit 23 is, for example, an illuminant that includes a backlight, an LCD, an OLED (organic EL display), or the like, and has a plurality of light emitting points that can arbitrarily control the intensity of light.

  When the lower illumination unit 23 is used, measurement with transmitted light is possible without using a perforated tray, so that it is not necessary to arrange the particles to be measured on the perforated tray, and the time required for measurement preparation is reduced. There are advantages to being.

  FIG. 8 shows an example of a torn grain image captured by the image sensor 33 using the lower illumination unit 23.

  Here, a supplementary explanation will be given regarding the presence / absence of the body split of the grain and the shade of the image.

  When light is applied to a part of the sample to be measured, the portion that is exposed to the light becomes brightest, and as it gets farther from the light source, it scatters and reaches the inside of the sample and becomes darker.

If the measurement object is a grain, the change in brightness of the grain image cylinder split by cracks no if looks smooth as shown in FIG.

On the other hand, in the case of grains which have cracked due to cylinder split, since the scattering of light occurs strongly cracked portion, an abrupt change in brightness before and after cracking is observed as shown in FIG. 10.

  In the present embodiment, it is clear from FIG. 8 that the image of the lower illumination unit 23 is bright and dark due to the center split of the split grain on the light emitting point on the LCD having the backlight, for example. did.

  On the other hand, in the case of the lower illumination unit used in the conventional grain discriminator, since the emission point of the transmitted light is determined, the illumination direction is constant with respect to the axis of the grain to be inspected, for example, when discriminating torn grains Had to keep on.

  In addition, in the conventional transport disk type grain discriminator, since the measurement is performed for each grain, the time for physical movement of the grain is limited in addition to the image processing time. There is an inconvenience that a plurality of measurement systems are necessary, for example, it is necessary to distinguish between split grains and heart white grains using different light sources.

  Furthermore, in the case of a grain discriminator using an image scanner, there is an inconvenience that it is indispensable to place it on a tray with a grain hole.

  FIG. 4 shows a schematic cross section of the upper imaging / illumination unit 22. A main board 52 is horizontally arranged in the upper housing 51, and the image sensor 33 is placed by the image sensor board 53 at the center of the main board 52. Further, the lens 32A is supported by a lens barrel 54 attached to the lower portion thereof, and a polarizing plate 55 is attached to a lower end portion of the lens barrel 54.

  A heat radiating plate 56 is attached around the lens barrel 54 to support the LED element 31A, and a diffusion plate 57 and a dustproof plate are provided on the lower end surface of the upper housing 51 located below the LED element 31A. 58 is attached.

Next, the grain discrimination process by the grain discrimination system 61 combining the imaging device 21 and the operation panel type information terminal 1 according to the embodiment of the present invention will be described.

  The following example can be given as an overall flow of the imaging process of the grain on the tray 24 by the imaging device 21 in the grain discrimination system 61 and the image processing by the operation panel type information terminal 1.

(A) After turning on the upper light emitting unit 31 of the imaging device 21, an image of a grain is captured by the image sensor 33 with reflected light to obtain image data. And the position of a grain is detected by the image process in the operation panel type information terminal 1, and the light emission shape of the lower light emission part 43 which is a transmission light source is calculated. Further, detection other than torso cracking is performed by image processing in the operation panel type information terminal 1.

(B) After the lower light emitting unit 43 is turned on, an image of a grain is captured by the image sensor 33 with transmitted light to obtain image data. Then, crack detection is performed by image processing in the operation panel type information terminal 1.

(C) Depending on the result of the above processing, as shown in FIG. 11, the lower light emitting unit 43 is turned on with a different pattern to detect white immature grains, and the second imaging with transmitted light is performed. That is, as shown in FIG. 11, in addition to imaging of white particles using reflected light, imaging of white particles using transmitted light (entire light emission from the entire surface : light emission points ), transmitted light (spot : light emission from some light emission points). ).

(D) Depending on the measurement item, the lower light emitting unit 43 is turned on in a different pattern to detect colored grains on the back side of the grain on the surface far from the image sensor 33, and imaging is performed three times or more by transmitted light. . That is, as shown in FIG. 12, in addition to imaging of colored particles (front) by reflected light and imaging of colored particles (back), imaging of colored particles (back) by transmitted light (entire emission of all emission points ). The colored particles are imaged (back) by transmitted light (spot : light emitted from some light emitting points ).

(E) With the illumination method as described above, it is possible to measure the state of the inside / back side of the sample that cannot be seen from the image sensor 33 in the conventional reflected light image, and the image sensor 33 is not disposed above and below the sample. There is an advantage that it may be.

  Next, a series of processing of the touch panel information terminal 1 equipped with the application program according to the present embodiment will be outlined with reference to FIGS.

  FIG. 5 is a flowchart showing the processing contents of the application program according to the present embodiment, and FIG. 6 is an initial screen for grain discrimination displayed on the touch panel type operation display unit 3 based on the application program.

  First, on the initial screen shown in FIG. 6, for example, brown rice measurement is selected (tapped), and the application program is started.

  Next, images of a large number of brown rice grains arranged on the tray 24 are picked up by the image pickup device 21, and the image data is transmitted to the touch panel type information terminal 1 as described above.

  Image data of a large number of brown rice grains imaged by the imaging device 21 is subjected to image processing by the image processing unit 11 based on the application program and then stored in the terminal storage unit 5.

  Next, based on the application program, the grain size determination calculation is performed based on the image data of the limit reference product and the standard product with respect to the image data of the arbitrary number of kernels, and an image of the arbitrary number of kernels captured The grain quality of the data is discriminated, and the discrimination result associated with the judgment item information is obtained for each individual brown rice grain.

  Further, the determination result is stored in the terminal storage unit 5 based on the application program.

  And by the tap operation for the result display with respect to the touch panel type information terminal 1 of the operator, for example, for each brown rice grain such as sized grains, partial colored grains, etc., which are discriminated as shown in FIG. Several thumbnail images with discrimination items are displayed on the touch panel type operation display unit 3. In addition, in FIG. 7, the discrimination | determination result regarding eight brown rice grains is displayed as an example.

  In addition, although not shown, the number of grains, the composition ratio (number of grains,% by mass) and a histogram are calculated and displayed on the touch panel type operation display unit 3 by the application program, or displayed by the application program. , Enlargement / reduction processing of the captured image, rotation processing in the case of a stereoscopic image, rearrangement display for each grain quality, grain quality, typicality, grain length, grain width, projection for each grain An area or the like can be calculated and displayed on the touch panel type operation display unit 3.

  According to the grain discrimination system 61 that combines the imaging device 21 and the operation panel type information terminal 1 according to the present embodiment, the imaging device 21 captures an image of a grain made of brown rice grain and the like to obtain an image data. After being obtained, the image data is transmitted to the operation panel type information terminal 1 and processed to process the image data of each grain to determine the grain quality and display it on the touch panel type operation display unit 3. Based on the image data by reflected light of each grain or the image data by transmitted light, the operation panel type information terminal 1 accurately discriminates various grain qualities of these grains and displays the discrimination results. It is possible to realize and provide a novel grain discrimination system 61 that is simple and easy to operate.

  In addition, according to the grain discrimination | determination system 61 which concerns on a present Example, a brown rice grain etc. are imaged with the said imaging device 21, and it memorize | stores in the terminal memory 5 of the touchscreen type information terminal 1, and thereby brown rice grain etc. It is also possible to adopt a usage mode in which the imaging time point and the grain quality determination time point are shifted.

  In addition, according to the present embodiment, the touch panel type information terminal 1 is used, and the captured image such as brown rice grains is transmitted through the e-mail processing unit 7, the communication processing unit 8, and the Internet N as in the case of the first example. Similarly, it is possible to realize a quick discrimination process such as seeking expert judgment by transmitting / receiving data to / from an external computer.

  Furthermore, by using the captured images of brown rice grains and the like for publicly known cloud management, it is possible to realize a usage mode in which the image data is shared by many people.

As shown in FIG. 1, the application program according to the present embodiment is stored in an external storage medium 12 such as an SD card, and the terminal body 2 is stored on the basis of the application program using the storage medium interface 9. By operating in the same manner as described above, the general-purpose touch panel information terminal 1 can be made to function as described above, and the application program according to the present embodiment can be effectively used for many operators. is there.

  In addition, imaging of heart white grains by transmitted light (entire surface) by emission of the lower light emitting unit 31 as shown in FIG. 11, imaging of heart white grains by transmitted light (spots), transmitted light (as shown in FIG. Imaging of colored particles by the whole surface (back) and imaging of colored particles by the transmitted light (spot) (back) can be performed.

  With such an illumination method, it is possible to measure the state of the inside and the front side of the sample that cannot be seen from the image sensor 33 in the conventional reflected light image, and it is not necessary to arrange the image sensor 33 below the sample. There are advantages.

  In the embodiment of the present invention described above, the case of using the touch panel type information terminal 1 has been described. However, for example, as an operation panel type information terminal, for example, a floating touch technology is installed without touching the screen directly. (Move the screen without touching the panel by moving the finger near the panel) Non-contact operation type smartphone “for example Xperia sol” that can execute various screen operations with the finger etc. floating from the screen of the operation panel Of course, Xperia is a registered trademark.

  In addition to the above-described case, the present invention can be widely applied for appearance inspection and grain discrimination of various grains such as milled rice, wheat and soybeans.

DESCRIPTION OF SYMBOLS 1 Touch panel type information terminal 2 Terminal main body 3 Touch panel type operation display part 4 Program memory 5 Terminal storage part 7 E-mail processing part 8 Communication processing part 9 Storage medium interface 10 Control part 11 Image processing part 12 External storage medium 13 Communication interface 21 Imaging device 22 Upper imaging / illumination unit 23 Lower illumination unit 24 Tray 25 Power supply unit 26 Unit control unit 27 Work memory 28 Communication interface 29 Temperature sensor 30 Illumination controller 31 Upper light emitting unit 31A LED element 32 Optical system 32A Lens 33 Image sensor 34 Data Processing unit 35 Image memory 36 Power supply unit 37 Lower illumination unit control unit 38 Light quantity sensor 39 Temperature sensor 40 Vibration sensor 41 Imaging illumination controller 43 Lower light emitting unit 44 Low voltage circuit 5 The upper housing 52 main board 53 image sensor substrate 54 a lens barrel 55 polarizing plate 56 radiating plate 57 diffusion plate 58 dust-proof plate 61 grains determination system 62 lower housing N Internet network

Claims (1)

A flat tray on which an arbitrary number of grains to be discriminated are placed;
Upper imaging / illuminating unit comprising: an upper light-emitting unit that constitutes a reflected image light source that irradiates imaging illumination light from above the grain placed on the tray; and an image sensor for imaging the grain image When,
The transmission image light source that irradiates the illumination light for imaging from the lower side of the grain placed on the tray and has a plurality of light emission points capable of controlling the amount of light. A lower illumination unit comprising: a light emitter that can irradiate the grain; a temperature sensor that detects an ambient temperature; and a vibration sensor that detects movement of the grain on the tray;
Control unit for performing light emission control of the upper light emitting unit of the upper imaging / illuminating unit, operation control of the image sensor, light emission control of the light emitter, operation control of the temperature sensor, vibration sensor,
The imaging device used for the grain discrimination characterized by having.