TWI272841B - Spatial information determining apparatus - Google Patents

Abstract

A spatial information determining apparatus capable of precisely determining information of a target space. This apparatus comprises a plurality of photoelectric converting parts that receive a reflected light from a space to which a flash light is irradiated; a charge storing part formed, on each photoelectric converting part, by applying a control voltage to a plurality of electrodes provided on each photoelectric converting part; control means for controlling the number of electrodes, to which the control voltage is to be applied, such that the area of the charge storing part is different based on the flash period of the flash light; and an amplitude image generating part for generating an amplitude image having pixel values each of which is the difference between the charge stored by a charge storing part during the light up of the flash light and the charge stored by another charge storing part during the light out of the flash light.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spatial information detecting apparatus for detecting spatial information of a subject from two pairs of reflected light that are irradiated with modulated intensity. [Prior Art] _ In recent years, the detection device for illuminating the light in the object space and receiving the space information provided by the object space to detect the presence of the object in the object space or its contour or shape, is being used in the factory. Quality management in automation, crime prevention systems such as airports or train stations, and home TV automatic telephones in various fields. For example, Japanese Laid-Open Patent Publication No. 2001-148808 discloses a solid-state imaging device that can clearly capture a subject with respect to the influence of ambient light. In the solid-state imaging device, two CCDs for accumulating electric charge are provided for one automatic shooting image, and light-receiving charges when the light-emitting portion is turned on and off are accumulated on the respective CCDs, and the difference signals between them are used. Offset the effects of background light. Further, in the introduction of International Publication No. 2004/090994, a spatial information detecting device having an excellent S/N ratio is described. The spatial information detecting device is provided with a photoelectric conversion unit that generates a charge corresponding to the received light intensity, a control voltage is applied to the electrode provided in the photoelectric conversion unit to form a photoelectric conversion unit, and a charge accumulation region in which the photoelectric conversion unit generates charges is generated, and the output is derived from The charge release portion of the charge accumulation field and the sensitivity controller that controls the control voltage to change the charge accumulation 1272841 domain size. However, in addition to the influence of ambient light on the above-mentioned devices, the stability of the detection device, and the complexity of the detection device, from the efficiency of the detection of the space in the southern region, the evaluation method of the negative effect, the saturation of the light output, etc. There is still room for improvement in terms of the simplification of the device structure. [Summary of the Invention]

Therefore, the main object of the present invention is to provide a spatial information detecting device capable of detecting spatial information with a relatively simple structure while effectively reducing the influence of ambient light. In other words, the spatial information detecting device of the present invention is characterized in that: the abnormal signal having the predetermined number of cycles receives light from the target space irradiated with the intensity abnormal light, and at least two conversion units corresponding to the received light output power are generated; Providing at least one electrode in each of the photoelectric conversion units; at least one of the electric charge conversion unit and the at least one electric charge conversion unit generated by the electrophoresis (four) electric conversion unit and the animal imaging photoelectric conversion unit; The two different intervals, in the case of different charge accumulation products, the control is printed on the aforementioned at least _electrode system

The pressure control device; W outputs the charge m accumulated in the charge of the charge storage portion and the electric i accumulation portion formed by the photoelectric conversion portion at one end, and the charge accumulated at the end of the two sections, and the charge at the other end Light; 1272841 change. In the charge storage unit formed by 卩, the evaluation unit of the charge difference amount evaluation target space accumulated at the other end of the two sections. According to the present invention, since the area of the charge accumulating portion formed in the photoelectric conversion portion can be changed by controlling the control voltage applied to the electrode, the shutter or the aperture can be set in order to adjust the illuminance of the incident photoelectric conversion portion. A space detecting device having a relatively simple structure is provided. In addition, since a photoelectric conversion unit can be used, charges are accumulated in two different intervals of the abnormal signal phase.

When the evaluation is performed, the charge in each of the two intervals of the abnormal signal phase is taken out and evaluated in a batch, so that the spatial information can be detected and evaluated more efficiently. In a preferred embodiment of the present invention, the at least two photoelectric conversion units are controlled by the light receiving from the object space where the flash is irradiated, the control device is turned on by the flash, and the acid is different in the area of the charge accumulation portion. The voltage and evaluation unit's the charge accumulated during the flash-on period of the charge storage unit formed by the photoelectric conversion unit and the difference between the charge accumulated by the charge storage unit __ formed by the other photoelectric conversion unit =. In this case, it is preferable that the control device integrates the electric charge accumulation portion formed in each of the photoelectric conversion portions with the change in the _light flashover period, and the charge accumulation formed by the other (fourth device)-one photoelectric conversion portion. It is preferable to control the control voltage during the light-on period, which is larger than the _ period, and the charge accumulation area formed in the other photoelectric conversion portion is larger than the light-on period during the light-off period. More advanced steps, difficult to control, during the light-on period: the area of the charge accumulation portion formed by the change part is preferably controlled by the other photoelectric conversion unit during the closing period. Voltage. The difference portion of the evaluation unit of the space-poor detecting device is the two-image generating unit that emphasizes the object to the background as the child of the amplitude image of the pixel value. The image of the background object is effectively recognized by the relevant space information detecting device, and the shape or size is further improved. The image generating portion increases the amount of charge accumulated in the charge accumulation portion in the amplitude of the light, and the average amount of charge accumulated in the charge storage portion during both of the light-on periods: The generation of the value during the light-off period (4) The thick image generation part of the image/--when the prime number is constructed according to this, the g-image of the image is added to the amplitude image, and the amplitude image and the rich two are: J The value can be added in the same position in the object space, so the field only has the image of the background. Further step-by-step, in order to obtain the light output of the shadow==:::r, it is possible to effectively obtain the spatial information of the other best implementation of the vibration. The silo and the standby station are based on the amplitude image generating unit. The amplitude image includes the feature quantity for extracting the feature quantity of the object in the target space. The similarity calculation unit that calculates the similarity by the provision of the predetermined value is prepared in advance, and the similarity is equal to or greater than the predetermined value. The object _ corresponds to the object recognition unit of the object of the tentative value. In addition, when the object is a face, it further has a tentative value memory unit for temporarily calculating the face value of the face according to the feature amount of the face, and the object recognition unit 1728841 4 the face feature amount and the tentative value memory unit extracted by the feature amount extracting unit. When the similarity between the tentative temporary values of the memory is equal to or greater than the predetermined value, it is preferable to recognize that the face is the person whose tentacles are tentative. In this case, it is possible to perform face-to-face authentication judgment with excellent accuracy without being affected by the environment. Further, the spatial information detecting apparatus according to still another preferred embodiment of the present invention includes a saturation determination in which at least one of the two sections of the abnormal signal phase differs from the predetermined threshold by the amount of charge accumulated by the charge storage unit. And an output adjustment device that corresponds to the power output of the received light intensity according to the comparison result. According to this configuration, the charge amount of the saturation determination unit is larger than the critical value, i.e., when the light reception output is judged to be saturated, the output adjustment means can output the electric power of the photoelectric conversion unit under the lapse of ten months in which the light receiving output can be reduced. On the other hand, when the space is evaluated based on the difference in the received light output, and one of the received light outputs is saturated in order to obtain the difference, meaningful spatial information cannot be obtained. In particular, when the two received light outputs are saturated, the difference is zero, and the object is indistinguishable from the background. However, according to the present invention, even when the spatial information detecting device is used outside the room where a lot of ambient light is stored, the saturation state of the light receiving output is judged by the saturation determining unit, and based on the result of the determination, the light receiving device can suppress the light receiving by the output adjusting device. The saturation of the output. Therefore, even in an environment where the light output is saturated, it is possible to stably extract meaningful spatial information from the difference in received light output. Further, as will be described in detail later in the embodiment, the output adjusting means preferably controls at least one of the photoelectric conversion portion, the light source, and the light receiving optical system in the case where the light receiving output is not saturated. In addition, the space information detecting device of the present invention includes a saturation determining unit that compares the amount of charge accumulated in the charge storage unit with a predetermined threshold value in at least one of two sections of the control signal phase, and the evaluation charge amount When the threshold value is larger than the threshold value, it is preferable to use the difference amount set in advance to take the above-mentioned difference: The difference I depends on the space of the other party. In this case, the difference value obtained in advance can be used to obtain the maximum value obtained by the difference amount, and the portion where the received light is positively saturated is separated from the background on the amplitude image.

In addition, the spatial information detecting and oscillating device of the present invention preferably has a storage time corresponding to the complex period of the abnormal signal, and a charge amount and a mosquito threshold value accumulated in two different health centers located in the phase of the abnormal signal. The comparison saturation determination unit and the output adjustment device that adjusts the accumulation time to adjust the power reception corresponding to the received light intensity according to the ship comparison result. This ^ if the skill of the new can rely on f_ to improve the coping. = When the amount of received light is small, the accumulation time becomes longer, that is, there is a suppression of the sound effect = the multiplication of the time of the product interval and the number of cycles (the number of accumulations). Or 疋, the saturation determination unit, in the two abnormal intervals of the abnormal signal, the two of the different abnormalities of the phase of the abnormal signal are known to be determined by the criticality of the reading, and the comparison result is changed by at least two different servants. - The length of the square is also set to adjust the power equivalent to the above-mentioned received light intensity. Further objects and effects of the present invention will be understood in more detail from the following preferred embodiments of the invention. [Embodiment] 1272841 Hereinafter, the exercise assisting device of the present invention will be described in detail based on a preferred embodiment. <First Embodiment> As shown in the first figure, the space training detecting apparatus according to the first embodiment of the present invention mainly consists of a light source 1 that illuminates a flash in a target space, and a light that receives light from a target space. The image sensor 2, the light source 1 and the control image sensor 2 are arranged on the semiconductor substrate.

In the path 3, the evaluation unit 4 that evaluates the target space from the image sensor 2 is used as the amplitude image generating unit 40 that generates the amplitude image, and the shading image generating unit 42 that generates the shading image is mainly composed. Further, the symbol 5 in the figure is a series of neon optics, whereby the light from the object space is projected into the image sensor 2. For example, the light source 1 can be used as a semiconductor in which a plurality of light-emitting negative resistances are arranged on one plane, or a combination of a semiconductor laser and a distributed laser. The light irradiated by the light source 1 can be either one of infrared rays and visible light. If infrared rays are used, it does not affect the opening k of the light source at night, and is suitable for the purpose of monitoring a camera or the like. On the one hand, if visible light is used, the image light source 1 which is close to the state of human visual observation can be driven by the signal of the predetermined number of cycles outputted from the control circuit 3. In the present embodiment, the number of square waves of the control signal is selected from HM00KHz, and the Dolby number is 5〇%. Therefore, the light ~1 called s cycle is provided at the same time and alternately turned on and off. This switching cycle is equivalent to the shortcoming of the human eye's incomprehension. It is difficult to have the above-mentioned cycle number and Dolby value as an example, and press the light source! 1272841 4 or the content of the spatial information to be evaluated 'The number of cycles and the value of Dolby can be set appropriately. The light receiving element 20 of each image sensor 2 has a photoelectric conversion unit 22 that receives a power output corresponding to the received light intensity from the target space, a plurality of electrodes 24 provided on the photoelectric conversion unit 22, and is printed on the electrode 24. The control voltage is formed in the photoelectric conversion unit, and the charge storage unit 26 that accumulates at least a part of the electric charge generated by the photoelectric conversion unit and the electric charge extraction unit 28 that extracts the electric charge stored in the electric charge storage unit 26 are taken out. For example, in the second A diagram and the second diagram B, each of the light-receiving elements 2 is provided with a semiconductor layer 11 formed by adding a tantalum solid of an impure object, and an insulating film such as an oxide film is formed on a main surface of the semiconductor layer U. The film 12 and the electrode 24 formed of the insulating film 12 on the semiconductor layer are formed. Such a light-receiving element 2 〇 is a known mis-element structure, and a photo-receiving element 20 having a plurality of electrodes 24 in the functional field is different from a general MIS element. The insulating film 12 and the electrode 24 are formed of a light-transmitting material, and the party light is irradiated into the semiconductor layer through the insulating film 12 to generate a charge in the semiconductor 11. In summary, the light-receiving surface of the light-receiving element 20 becomes the main surface (upper surface) of the semiconductor η on the second A and second B-pictures. The conductive layer of the semiconductor layer 11 of the non-conventional case is of an n-shape, and the electrons e are utilized for the electric charge generated by the irradiation of light. The above-mentioned light element 2〇, the positive control voltage +V of the pad electrode 24, forms a potential well (two pan layers) 14 for accumulating electrons e at the portion of the electrode layer 24 corresponding to the body layer 11 of the t-semiconductor layer 11. In summary, if a potential well is formed in the semiconductor layer, the state of the control electrode is printed on the electrode 24. When the bright light is irradiated by the semiconductor layer U, part of the electrons generated by the Weijing 14 are occupied by the potential well 14 Catching 12 1272841

, |M 4 is obtained, and residual electrons e are eliminated by recombination in the deep layers of the semiconductor. In addition, the electrons e generated at the isolation potential well 14 are also eliminated by the deep junction of the semiconductor layer u. In short, the light is irradiated to the semiconductor layer u as a function of the photoelectric conversion portion 22 for generating electric charge, and the latent well 14 functions as a charge storage portion 26 for storing the held electric charge. In addition, since the potential well 14 is formed on the portion corresponding to the electrode 24 to which the control voltage is applied, the potential along the main surface of the semiconductor layer η can be changed by changing the number of electrodes %# of the imprint control voltage. The area of the well 14. The ratio of the charge accumulated in the potential well 14 among the charges generated by the semiconductor layer 11 is larger as the area of the potential well 14 is larger. As will be described later, since the present invention is a charge accumulated in the potential well 14, the more the potential well 14 is increased, the more the sensitivity is improved. In summary, by changing the control voltage applied to the electrode 24, the area of the potential well 14 functioning as the charge accumulating portion 26 is changed, and as a result, the sensitivity of the photoelectric conversion portion 22 can be controlled. For example, when the light-receiving element 20 has five electrodes 5, as shown in the second diagram, • the control voltage +V is applied to the inner three electrodes 24, and the outer two electrodes 24 are not printed with the voltage (OV), that is, The second diagram shows that the control voltage +v is applied only to the electrodes 24 in the center, and the potential well 14 in the charge accumulation portion is on the light receiving surface as compared with the case where no voltage is applied (ον) on the remaining four electrodes 24. The area occupied has become larger. Therefore, the second A picture state is more than the second B picture accumulating in the potential well for the same amount of light, which means that the photoelectric conversion part has a high sensitivity, and in the case of the perception 2, it can be set in the thin film semiconductor. Each of the light-receiving elements 13 1272841 20 having the above-described configuration is disposed on a lattice point of the square square of the second square on the substrate. For example, there are 100 X 100 light-receiving elements 20 arranged in a matrix. Further, among the light-receiving elements 20 which are arranged in a matrix, the rows in the vertical direction are shared by the integrated semiconductor layers 11, and the semiconductor layers 11 are regarded as being vertically aligned by arranging the electrodes 24 in the vertical direction. Directional charge transfer path is used. On the other hand, in the image sensor 2, a charge is received from one end of each of the rows of semiconductor layers 11 in the vertical direction on the half earth plate, and a horizontal transfer portion composed of a CCD that transfers charges is disposed in the horizontal direction. Further, when the respective light receiving elements 20 are taken out by the potential well 14 of the charge storage unit 26, the same technique as that of the CCD can be employed. In summary, after the potential well 14 is accumulated, the voltage accumulated in the potential well 14 is transferred by controlling the printing mode of the control voltage applied to the electrode 24, and is taken out by other electrodes (not shown) provided on the semiconductor layer 11. Charge. The configuration for transferring the charge can be the same as that of the frame transfer type CCD or the same as the internal type CCD. When the configuration is the same as that of the frame transfer type ccd, the shape of the AI potential well 14 can be changed as if the charge is transferred to the right or left of the second A picture and the second B picture, and the same configuration as the internal line CCD is used. A CCD is arranged along the left and right sides of the second A picture and the second B picture, and the charge is transferred from the potential well 14 HOLD after the CCD, and the charge is transferred by the CCD to the left and right sides of the second A picture and the younger one B picture. Further, in the case of the charge take-out portion 28, when the configuration is the same as that of the facet transfer type ccd, the electric charge can be transferred by controlling the printing mode of the control voltage applied to the electrode 24, and during the take-out period and the charge accumulating portion 26 In the case where the charge accumulation period is different and the charge of the charge storage unit 26 can be taken out, the control voltage applied to the electrode 24 can be controlled. Therefore, in the embodiment 14 1272841, the electrode 24 is used for the charge transfer of the charge extraction portion 28, and the semiconductor layer 11 functions as the charge extraction portion 28. However, in the first diagram, in order to facilitate understanding of the function of the image sensor 2, the function of the light receiving element 20 is divided into a photoelectric conversion unit, a charge storage unit, and a charge extraction unit as described above. Further, in the charge extracting portion 28 of the first drawing, not only the semiconductor layer n but also the horizontal transfer portion described above is included. Further, as described above, the photoelectric conversion 22, the charge storage portion 26, and the electric charge extraction portion 28 are as the above-described general common electrode 24. The second circuit 3' is determined to accumulate among the charges generated by the illumination light from the photoelectric conversion portion 22 by controlling the printing mode of the control voltage while generating the control voltage applied to the electrode 24. The adjustment of the proportional sensitivity of the charge on the charge accumulation portion, the adjustment of the period in which the charge accumulation portion is formed, and the adjustment of the charge period from the charge storage portion 26 by the charge extraction portion 28 are performed. In short, by controlling the printing mode of the control voltage and the timing of changing the printing mode, the accumulation period of the charge accumulated on the charge storage unit 26 is controlled, and the charge accumulation unit 26 is passed from the charge storage unit 26 via the charge extraction unit 28 at a different period from the accumulation period. The electric charge is taken out and conveyed to the evaluation unit 4 to receive the light receiving and discharging period. The light-receiving optical system 5 is provided to project a target space on each of the light-receiving elements 20 of the image sensor 2. That is, the light receiving optical system 5 draws a 3 dimensional space map belonging to the object space on the 2nd dimensional plane of the light receiving element 20 of the arrayed image sensor 2. Therefore, the object M existing in the field of view which can be seen from the image sensor 2 through the light receiving optical system 5 is attached to the light receiving element. 'The shading image generating unit 42 of the evaluation unit 4 generates a shading image including the background of the object 15 1272841 (for example, refer to FIG. 10A), and the vibrating section 40' generates a detail for the background emphasis object, and refers to The first side). The scale shadow _ in the object _ ^ 尺 5 _. Or, can also be used to seek (4) 象 Μ 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 此 , , , , , , , , , , , , , The following is a description of the space information detection farm equipment of this embodiment.

Sexual action. The light source is as shown in the third display in the object space illumination ^

Interact the lights to turn off the lights. Further, in the present embodiment, the intervals in which the lights are turned off (hereinafter referred to as "Ta" during the light-on period and "Tb" during the off period) are equal. All in all, the modulation signal Dolby value: 5〇%. The light reflected from the light source m in the object space and reflected by the object of (4)_, as shown in the third B diagram, is irradiated to the light receiving element 20 at a delay time Td corresponding to the distance from the object M. However, the delay is delayed. The time ''Td') is compared with the ''T' during the light-on period and the 'Tb,' period, which is usually negligible because of the extremely short time. In the present embodiment, since the light-receiving period "Ta, the light-receiving wheel" Aa" and the light-receiving period "Tb" are supplied to the evaluation unit 4, the two groups of the received light are matched. Element 2 is used as a single element. That is, the "Ta" period during the light-on period is regarded as a high-sensitivity state at one end of the photoelectric conversion portion that converts one element into two light-receiving elements 20 and The electric charge accumulated on the electric charge accumulating portion 26 is taken out while the light-receiving output is taken out, and the photoelectric conversion portion at the other end is printed with a control voltage on the electrode 24 in a low-sensitivity state. One end is in the "Tb" period during the light-off period. The other end of the photoelectric conversion portion of the two light receiving elements 16 1272841 20 is regarded as high sensitivity, and the charge accumulated in the charge storage portion 26 is taken out as the light receiving output, and the photoelectric conversion portion of the terminal is reduced. (4) Voltage adjustment applied to the electrode 24 under the condition of the state. In this way, during the accumulation period of the corresponding turn-on, the charge of the accumulation period of Ta" is accumulated during the corresponding turn-off period "Tb," The charge during the accumulation period is pre-scaled in the shadow In the charge storage unit 26 of the induction device 2, the charge at both ends can be sent to the evaluation unit 4 in the first extraction period, and the following description is made for each of the two light receiving elements 20 constituting one element. There are three electrodes, in order to distinguish the one end of the photoreceptor electrode from the electrode of the other end of the light receiving element, as shown in the fourth A and fourth B figures, add (1) to (6) to the electrode 24. The number, that is, one of the two light-receiving elements 2〇 is equipped with electrodes (1) to (3), and the other is equipped with electrodes (4) to (6). There is also a 'best in every self-contained An overflow vent is provided on one of the light-receiving elements 20. In controlling the degree of inductance of the photoelectric conversion portion 22, the number of electrodes 24 for applying the control voltage is controlled in the case where the surface of the potential well 14 occupying the light-receiving surface is changed. During the light-on period "Ta", as shown in Figure 4A, the area of the potential well 14 for increasing the corresponding electrodes (1) to (3) is on all three of the electrodes (1) to (3). The positive control voltage (+v) of the same voltage is printed. On the one hand, the other light-receiving element 2 is turned on during the light-on period, only at the electrode. (4) The positive electrode control voltage (+V) is printed on the central electrode (5) in (6) and the area of the potential well 14 is reduced. Thus, the field of the corresponding electrode (1) to (3) is photoelectric The conversion unit 22 is set in a state of high sensitivity, and the field of the corresponding electrodes (4) to (6) sets the photoelectric conversion unit 22 to a state of low sensitivity, so that the electrodes (4) to (6) correspond to 17 1272841. On the other hand, the amount of new charge (electron e) that is subjected to light is much smaller than that of the corresponding electrodes (1) to (3). As a result, on the potential well 14 in the field of the corresponding electrode (1) to (3) Accumulates the equivalent of the light output Aa. On the one hand, during the light-off period of the light source 1 Tb", as shown in the fourth B-picture, the area of the potential well 14 for increasing the counter electrodes (4) to (6) is The positive control voltage (+v) of the same voltage is applied to all the three electrodes (4) to (6). During the turn-off period, the other light-receiving element 2 is only in the electrodes (丨)~(3). A positive control voltage (+v) is applied to the central electrode (2) to reduce the area of the potential well 14. Therefore, the field of the corresponding electrodes (4) to (6) sets the photoelectric conversion unit 22 to a state of high sensitivity, and the field of the corresponding electrode sets the photoelectric conversion unit 22 to a state of low sensitivity. The amount of new charge (electron e) generated by the light in the fields of the electrodes (1) to (3) is significantly smaller than that of the corresponding electrodes (4) to (6). As a result, the potential well 14 in the field of the corresponding electrodes (4) to (6) accumulates the electric charge equivalent to the light receiving output Ab. As described above, in the state of FIG. 4A, the charge corresponding to the turn-on period, Ta" can be accumulated, and in the state of the fourth B-picture, the charge corresponding to the "Tb" period can be accumulated, as in the fourth A diagram. When the state and the state of the fourth B picture are obtained in the second time, the printing mode of the control voltage is controlled, and the light-receiving output (Aa, Ab) of the "p" period and the "light-off period" (Tb) during the period of the opening p can be obtained. According to the length of the "Ta" during the light-on period and the "Tb" period during the light-off period, the time is: the light that is incident on the light-receiving element 20 is small and the light is output by the light-receiving Aa, Ab of the noise inside the light-receiving element. The S/N has a deterioration phenomenon. At this time, after the two states of the fourth A picture and the fourth B picture are repeatedly repeated, the charge of the charge accumulation gas 18 1272841 is accumulated several times, and then the charge extraction part 28 can be taken out. The light-receiving portion Aa, Ab may be used. The charge-extracting portion 28 is connected to the charge storage portion 26 of the two light-receiving elements 2〇 of one halogen, and the electric charge is "Ta" during the light-on period of each of the light sources. After the charge of the "Tb" is turned off, the rain is discharged to Aa during the removal. Ab - 4 and fed to the evaluation unit. Accordingly, the two kinds of fork light outputs (Aa) can be taken out during the accumulation period of the electric charge during the cumulative lighting period Ta", the accumulation period of the electric charge during the accumulated de-lighting period "Tb", and the extraction period of the electric charge of both of them. Further, in the period in which the area of the charge storage 邛 26 is reduced, in order to suppress the incorporation of electric charges other than the necessary electric charge, it is also possible to cover the vicinity of the electrode 24 in the charge accumulation portion 26 covered with the light shielding film in the present period. In the present embodiment, the printing is controlled on each of the three electrodes (1) to (3) or (4) to (6) in the state of the fourth A picture and the fourth picture state. The voltage (+v) is set equal to only one of the electrodes (7) or (5) plus the control voltage (+v). Therefore, even if the potential well 14 area changes the depth of the potential well 14 can be kept constant Therefore, the charge generated near the barrier wall between the potential wells 14 flows almost uniformly into the well-kneaded well 14 of the anastomosis. However, 'the area of the potential well 14 is narrowed, and the photoelectric conversion portion 22 is set during the low-sensitivity period, or even Being transferred during the charge of the potential well 14 'light once When the light-receiving element 20 is incident, the electric charge is accumulated in the electric charge storage unit 26. That is, the electric charge generated by the photoelectric conversion unit 22 in the high-sensitivity state is mixed in the electric charge storage unit 26. As will be described later, in the present embodiment, The electric charge of the Ta during the light-on period and the charge of the "Tb" during the light-off period are respectively stored in the 19 1272841 charge storage unit 26, and the unnecessary charge is mixed, and the difference is partially removed together with the corresponding ambient light component. In the charge storage unit 26, while the electric charge is transferred while the charge is being stored, the photoelectric conversion is performed. The 卩22 is such that the area of the low-sensitivity charge stagnation unit 26 becomes small, and the electric quantity and the old amount are less.

Hereinafter, for the sake of simplicity, the amount of charge accumulated in the potential well 14 is assumed to be the area ratio of the potential well 14. Further, the photoelectric conversion unit 22 is set to the paleo-sensitivity state and the low-sensitivity state, and the difference in the area of the potential well 14 is three times larger than the difference 2, so the cumulative charge amount is also set to be three times the difference. Now, in the potential well 14 corresponding to one electrode, the amount of charge accumulated from the light source is regarded as (S) 'the amount of charge accumulated by the ambient light when / (Ν), as shown in the fourth diagram. The total amount of charge accumulated in the potential well w corresponding to the electrode (5) is (S+N), and the amount of charge accumulated on the potential well of the corresponding electrode (1) to (3) becomes ( 3S+3N). On the one hand, the fourth state is equivalent to the light-off period Tb, and there is no charge accumulated by the light from the light source, and the amount of charge accumulated on the potential well 14 of the corresponding electrode (2); The amount of charge (N) accumulated by the ambient light in the mouth and stomach 2. Similarly, the amount of charge accumulated in the counter electrode (4):: the potential well 14 is only (3N). When the amplitude image generating unit 40 generates the amplitude image, As described above, in the state of FIG. 4A, the potential well (10) corresponding to the high induction dissimilarity of the electrodes (1) to (3) is accumulated, and the charge corresponds to the state of the fourth state (=4) to (6). The potential of the inductive sorrow potential well 14 corresponds to the difference between the light output Aa, Ab. Here, the equivalent of the light output Aa: the charge amount is accumulated during the light-on period "Ta" The accumulated charge (3s + 3N), 20 1272841 and the sum of the unnecessary charges accumulated in the potential well 4 of the state corresponding electrode (7) in the state of the fourth B, that is, 3S + 4N - is equivalent to the light output The charge 1 of Ab is the charge (3N) accumulated during the turn-on period, and the unnecessary charge (S+N) accumulated on the potential well 14 of the electrode corresponding to the state of the fourth graph. And, that is, form S+4N. The difference between the received light output Aa and Ab is calculated as (3S + 4N) - (S + N) = 2S, and the amplitude image can be generated by eliminating the influence of unnecessary charge (N) caused by the ambient light. However, as shown in the curve E of the fifth graph, the ambient light intensity changes with time, and this curve E corresponds to the light intensity of the light-converting portion 22 during the light-off period "Tb" of the light source 1, and the result corresponds to The light-receiving output Ab of ''Tb' during the light-off period. Thus, since the light-receiving output Ab of the light-off period "Tb" of the light source 1 corresponds to the height of the curve E, the light-receiving output Aa of the light-emitting period Ta of the light source 1 also becomes In general, since the light source 1 turns on and off the light, the light output Aa, Ab from the image sensor 2 is also higher than the curve E during the light-on period, and the "Tb" becomes the curve during the light-off period. The height of E. The corresponding light output from the light source 1 that is incident on the object space is above the curve E, and the light output Aa, Ab of the light-off period "Ta" and the light-off period "Tb" is obtained. The amount of difference (Aa - Ab) can extract only the component of the spatial light from the light source 1 by removing the influence of the ambient light. The difference amount (Aa-Ab) is attached to the image to form an amplitude image. A quantity (Aa-Ab) is turned on from the adjacent During the "T," and "lighting off period" Tb, (in the fifth picture using the light-off period "Ta" followed by the light-off period "Tb"), the light-receiving outputs Aa, Ab are found, will be in the difference 21 1272841 The intensity of the ambient light E is substantially unchanged during the period in which the "A" and "Bb" periods of the different amount (Aa - Ab) are turned on. Therefore, since the "Ta" and the light are turned off during the light-on period The party light output caused by the ambient light of the period "Tb" cancels each other out, so that only the light-receiving output corresponding to the reflected light reflected by the object object is left from the light source 1 to illuminate the object space, and as a result, only the emphasis on the amplitude image can be obtained. On the one hand, the shading image generating unit 42 is in the light-emitting output Aa of the light source 1 during the light-on period A, or during the light-off period, the light-receiving output Ab of the Tb" or during the light-on period "Ta In the "light-off period" Tb, the average of the light-receiving outputs Aa and Ab is added to the position of each light-receiving element 2〇 to produce an image. In this case, the image is generated in addition to the light reflected by the object, so that a general shading image including the background other than the object can be obtained. Further, in the present embodiment, the light-receiving output Aa is generated by the light-receiving output Aa during the light-on period "Ta" of the light source 1. However, as shown in the third A diagram, it is not necessary to maintain the photoelectric conversion portion 22 at a high level during the entire period of the light-on period "Ta" and the light-off period "Tb". According to the technical idea of the present invention, during the light-on period, the photoelectric conversion unit 22 is set to be in the south sense during the period of "Ta" and "off", and the period of time is sufficient. In this case, if the matter is equal, the charge period is equal to 'can turn off the light period' Ta' and turn off the light "Tb", the ratio value 疋 is 5G% or less, and the delay time due to the light output can be removed. "Td" shadow plastic celestial singer ~ two hearts is. In addition, if the distance k' to the object 已知 is known, that is, as the sixth AH and the sixth Β图#, considering the distance to the object μ-the delay time "Td", the light is turned on from the light source 1. Or the light is turned off 22 1272841 After the delay time "Td", the light-on period "Ta" and the light-off period "Tb" are set, and the photoelectric conversion unit 22 in the high-sensitivity state may store the electric charge. At this time, the amount of charge accumulated in the charge storage unit 26 is reduced to a level corresponding to the delay time "Td" as compared with the case where the control of the third A map and the third B map is performed, but the light can be obtained during the light-on period. "Ta" and the "Tb" during the light-off period correctly reflect the received light output Aa, Ab, so that the influence of ambient light can be more reliably eliminated. Further, since the "Ta" or "OFF" period "Tb" during the first turn-on period is short, the "Ta" or "OFF" period "Tb" during the first turn-on period is difficult to obtain in the evaluation section 4. Since the size is received by light, it is preferable to use the charge accumulated in the charge storage unit 26 as the light output during the light-on period "Ta" during the plurality of light-on periods "T", during the plurality of turn-off periods "Tb" The electric charge accumulated in the electric charge storage unit 26 is used as the light receiving output during the light-off period "Tb". The period during which the charge accumulation unit 26 accumulates electric charge and the electric charge take-out unit 28 take out the electric charge from the electric charge accumulating unit 26 and output it to the evaluation unit 4 can be adjusted by the control voltage applied to the electrode 24 as described above. In the above-described embodiment, the two light-receiving elements 20 are used for one element, and the charge accumulation period of the light-off period "Tb" is accumulated during the accumulation period of the charge in which the "Ta" is stored during the light-on period, and both of them are taken out. Two kinds of light-receiving outputs Aa and Ab are obtained in three periods such as the charge extraction period. However, in the case of the modification of the present embodiment, one light-receiving element may be used for one element. In this case, by increasing the area of the "Ta" charge storage portion 26 during the light-on period of the light source 1, the charge accumulated in the high-sensitivity state is transmitted as the light-receiving output to the evaluation unit 4, and by adding The area of the "Tb" charge accumulation portion 26 during the turn-off period of the large light source will be in the high sense 23 1272841

Period ρ: Γ = the electric charge accumulated in sorrow is taken as the light-receiving wheel and is sent out to the evaluation unit 4. The printing mode of the control voltage from the 1 empty circuit 3 to the electrode 24 is overlaid. "I / kind + text light output Aa, Ab, can be stored during the light-on period" Ta electricity accumulation period, take out this charge take-out period, accumulate turn-off period fgj ^ t = p ^ charge accumulation period, take out This charge is taken out during the period of four times, such as the hinge. From the second modification of the present embodiment, it is also possible to change the area of the potential well 14 together with the depth. For example, the seventh and seventh B diagrams show that the imprint control voltage (stomach VI, for example, 7V) is simultaneously set to be larger than the three electrodes (1) to (3) or (4) to (6). The control voltage (+V2, for example, 3V) is applied to the electrodes (2) or (5). Thereby, the depth of the large-area potential well μ becomes deeper than the depth of the small-area potential well 14. However, it is considered that the electric charge generated in the portion corresponding to the electrode (1), (3) or (4), (6) which is not printed with the control voltage flows into the potential well 14, and it is considered that the latent electric well 14 has a higher charge inflow rate. . This means that more charge flows into the high-sensitivity potential well 14 . As a result, in the low-sensitivity potential well 14, the charge rate of the unnecessary charge in the portion corresponding to the charge (1) '(3) or (4) or (6) is lowered. The amount of unnecessary charge that flows primarily into the potential well 14 to conserve charge can be reduced to a lower level. In the third modification case of the present embodiment, as shown in the eighth and eighth B diagrams, it is preferable to have three electrodes (1) to (3) or (4) to (6) in each of the light receiving elements 20. The control voltage of the central electrode (2) or (5) is higher than the control voltage of the electrodes (1), (3) or (4), (6) printed on both sides, and the central electrode (2) Or (5) a light shielding film 25 is added thereto. In this case, the part corresponding to the electrode (2) or (5) 24

The 1272841 bit is almost unprepared by the light-shielding film 25 according to the charge of the light ^ (3) ^ (4) . The parts of the electrodes (2), (5). Because it is covered with blackout coffee; ^The part of the sputum 20 is so that the thin light-shielding film 15 covers the part, and the well 14 can hardly be generated because of the charge of the light, so in order to protect the electricity, the potential is reduced. The state charge of the area of the well 14 hardly occurs, so that the incorporation of the charge causing the formation of the impurity component on the charge is reduced, and the two electrodes (1) and (3) are formed when the latent well 14 forms a stepped shape. Or the charge generated in the parts of (4) and (6) moves while the portion corresponding to the electrode (2) or (5) is generated. That is, even if a short period of time between the generation of the electric charge d and the storage of the electric charge is performed in a few times or less, the possibility of charge mixing between the potential wells 14 formed by the adjacent photoreceptor 20 is reduced, and the noise reduction can be achieved. ingredient. Further, the technique of forming the latent well 14 into a step shape is not limited to the light shielding film 15. In the above embodiment and the modified case, the number of electrodes = the number of electrodes * is limited to three. Further, the number of electrodes to be printed in the high-sensitivity state and the low-sensitivity voltage can be arbitrarily set. There is also an image sensor 2 that will be used as a 2nd dimension lake by the optical element side, but it can also be a sub-element, that is, as in the case of the above-mentioned change case, it is not impossible to purchase a light-receiving element 2〇. Further, in the semiconductor layer n constituting the light-receiving element 2, the concentration distribution of the impurity corresponding to the distance from the electrode 24 is applied along the illuminating surface, and the control electric charge-charge portion 26 is printed on the electrode 24 by the control. The area is also ok. 25 1272841 <Second Embodiment> The spatial information detecting device of the #& and the known method extracts the feature quantity of the t-image from the amplitude image, and compares it with the provisional image prepared in advance. The degree 4 object is regarded as a feature, except that the following constitutions are essentially the same. Therefore, the description of the same configuration is omitted. The spatial information detecting device according to the vibration mode, that is, as shown in the ninth figure, extracts the generated amplitude image and the feature amount extracting portion 5. In the face of the tentative prefecture (the character of the character (10), one of the objects 〇b), the face y 4 乍圮 乍圮 56 56, in advance, the object to be recognized (the amount of the person's face is based on the face extracted through the feature extraction section) The feature image ": tentative image. The actual measurement aspect is calculated from the generated vibration calculation unit 52 (4) 2 extraction unit % of the county feature quantity in the similarity degree calculation class; ?; Γ; = Γ 6 memory face tentative image ratio similarity In the case of the #~Hp54 system, the face degree tentative image is calculated by the similarity calculation unit 52, and the prefecture is the equivalent of the actual object, and the actual object is retracted. The Si coffee is switched by the operation mode selection unit (not shown). The characteristic cooked portion 50 of the amplitude value type has the amplitude differential value of the pixel value from the amplitude image, and the image becomes 乂===Pro ) - The wheel that produces the wheel is closed and you don't figure it out), from the image processing light image - a: the surface feature quantity. Also, the tenth A picture is a thick case, the brother ten B picture corresponds Amplitude image of shading image 26 1272841 'The tenth c« is the amplitude image such as the tenth β map _ dry x amplitude Differential image. Top left ♦ 屌 point: The image coordinate system is based on 柘, 上田原,,,, 占, and the X-axis is positive (Lin as a video image)

: (y direction) when the coordinate system in the vertical direction::: Dan direction 'The positive y axis + B picture is not the size of the mask will be 3 χ 3 books, " $ extraction part 5 〇 as the first 遽 lf lf 适用In the amplitude image, there is a direction ", the optical device hx, and the 'reproduces the amplitude differential value of the local spatial differential value of the amplitude value of the amplitude image as the amplitude of the halogen. The differential intensity value of each element will be The amplitude differential image 2 quantifies the critical facial feature amount. In the first reading, the weight coefficient of the character Ob image is extracted. The vibrating 5 ^I G is displayed on each of the calenders of the figure. (u, v) is used in the significant image of the adjacent image.

A map 2 = ° here 'differential intensity value 1 G (U, v) I is the tenth-array alizarin% when the center of the 3X3 pixel local area (moment, or) of each element pl~p9 The respective halogen values are as shown in the u(8) graph; ^~1 'the differential value in the x direction and the differential value in the 7 direction dy are as follows (the formula IG(u,v) | = { (dx2(u,v) + dy2( u,v))l/2 (Equation 1) Value dx(u,v) = (c+2f+i) — (a+2d+g) (Equation 2) dy(u,v)=(g+2h +i) - (a+2b+c) (Equation 3) In the pixel value, the differential image of the amplitude of the amplitude differential value obtained from the (Formula 1) is larger, and the amplitude difference of the amplitude image is larger. The amplitude micro 27 Ϊ 272841, the score becomes larger. The feature amount extracting unit 50 quantizes the amplitude differential image 2 by the threshold value to generate an output image, and then reports the similarity calculation 邛52| The feature quantity of the object 〇b extracted by the 影像4 is calculated in comparison with the tentative image stored in the tentative image creation memory unit 56. The object recognition unit 54 is similar to the degree of similarity calculated by the similarity calculation unit 52. When the value is higher than the value of the object measured by the authentication, the value of b is equivalent to the color = temporary • The face of the figure is the face of the person, and the object recognition unit 54 can be applied to a well-known conversion technique such as frequent conversion, as appropriate, using a well-known face authentication technique. In this embodiment, the amplitude differential image is used. 2 Numerically obtained f-image: Compared with the use of amplitude image, the amount of data (information amount) can be reduced in the face-to-face speed authentication process, and can easily identify areas with large rate of change of paragraph difference distance. And in the field where the rate of change of distance is small, there is the advantage that the object can be correctly recognized. Correction, in the presence of illumination light, the color of each pixel of the shaded image is made into a strong value of the ship's value. Compared with the image obtained by digitizing the predetermined threshold value 2, the differential intensity value of each pixel value of the amplitude image is used as the amplitude differential image of the pixel value under the same conditions, and the threshold is used to define the critical value. When the value 2 is numerically obtained, it is difficult to be affected by the ambient light, and the object recognition unit 54 can recognize the object with a stable accuracy. X. The present embodiment changes the case In the case of certification, the entire face of the face is used. The personal authentication by the positional relationship of the special government can also be made. The amplitude image shown in the tenth-A picture is created as the twelfth reward 28 !272841 The output image (the image obtained by digitizing the amplitude differential image 2). When the amplitude differential image 2 is digitized, the value of the differential intensity is larger than the cheek or forehead due to the eye For example, the twelfth c-c shows that the end points of the eyes, the nose, the mouth, and the like can be extracted as the feature points C of the face. From this point, the position of the point is related to the temporary image of the Nyco, and the priority image is similar. The degree of certification is shortened, so the time required for certification can be shortened. On the other hand, in the case of the second case of the real money red, it is expected that the position of the micro-knife image on the position, that is, as shown in the tenth D-th graph, the extracted feature amount extracted from the amplitude slope direction may be extracted. That is, the feature amount extracting unit 5 is provided with an amplitude oblique value of the differential material value for which the respective image values of the image are generated.

The slope of the amplitude of the amplitude of the amplitude of the amplitude of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the image The influence of the reflected light of the object Gb can correctly understand the advantages of the county.以 以 以 心 心 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量 产量Directional image. In this m, 振幅 俚 amplitude formula ah 3) to ^ (: : ^ table spear direction ❹ ' with the above (public 6 = tan_l {dX / dy} (formula 4) Y tenth D picture The amplitude slope direction image is used in the range of the amplitude slope of the value of 29 I272841. The value of the gradient is greater than the value of 359 degrees. The pure slope direction (four) is the concentration value of the G degree. 1' and the amplitude slope direction value Θ is 359 degrees, the Lay value is the maximum value.) The concentration value converted from the amplitude slope direction value is used as the image of the book = green. There is also the image with the amplitude slope direction. The recognition of the object is performed by using the slit differential image, and (4) the degree of image recognition is performed by the recognition unit 54. When the feature amount is extracted by the output unit 50, for example, the vibration value is displayed in the figure of the 13th A picture. Direction ·, ε2, ε: post-valued as for the thirteenth_display ^

Go, the younger brother of the 12th B picture shows the mask of the big A $ 7 昼 之 filter, Μ apply to all pixels, the total calculation of the packet filter hi towel 4 directions m, E2, E3 in: above: Fine-to-count each of them^===================================================================== Secondly, the effective book Ϊ = white area, # 昼 作 作 作 黑色 黑色 黑色 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 如 = = = = = = = = = = = = = = = = = = = The characteristic parts of individuals such as α use only the extracted parts. At this time, compared with the use of the entire face for authentication processing, in order to shorten the time required for certification. Further, the feature amount extracting unit 5 requests the amplitude slope direction value: 'Refer to the tenth side of the tenth-baked (four) with the significant 昼素网; Ρ~ρ9 昼素 values a to d, f~i d difficult ten rings, force, position also 30 1272841 can be calculated using the value of 4 near or 16 near the prime. Further, the amplitude slope direction value 0 is obtained from dx(u, v) and dy(u, v) as the critical number, and the positive and negative connection threshold (tan-1) is used, but other critical numbers may be used. For such a critical number, it is preferable to correct the non-linearity of the ratio dx(u,,v) to use the critical value of the linearity in the amplitude slope direction value Θ. <Third Embodiment> In the spatial information detecting farm of the present embodiment, the adjustment processing is performed to suppress saturation of the light receiving output, and the stable amplitude image is stabilized. The method is the same as the real value of the method, so the explanation is omitted. As shown in Fig. 14, in the spatial information detecting apparatus of the present embodiment, the light source 1 is repeatedly turned on and off at a predetermined number of cycles (10 to 100 kHz). The image perception is 2, and the light sensitivity can be adjusted in units of pixels. The light source 1 receives the light from the object space during the respective light-on periods and during the light-off period, and receives the light after accumulating the charge of the predetermined period of the modulation signal. Output to output. For example, the frequency of the modulated signal is 30 Hz, and the received light output is extracted 6 times per second from the image perception (in other words, the light-on period and the light-off period are 30 times each). Hereinafter, the unit of the light-receiving output that is taken out from the image sensor 2 at a time is referred to as one side. Therefore, the data of the two faces can be obtained for each light-receiving period of the light-on period and the light-off period. The output of the image sensor 2 is temporarily contained in the face memory 7 by the AD conversion unit 6 after the digital signal is changed.昼面7 has a minimum of 2 昼 份 即可 ' ' ' ' ' ' ' ' ' 开 ' 开 ' 开 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像 影像If the luminous flux of the light is not changed, the difference between the light-receiving time of the light-on period and the light-off period is that the light emitted from the light source 1 in the object space reflects the amplitude of the reflected light by the object Ob in the object space. The face memory 7 receives the light receiving output from the image sensor 2 during the extraction of the light receiving output, and the image sensor 2 reads the data during the accumulation of the electric charge. The evaluation unit 4 has the difference amount calculation unit 44, and obtains the received light output difference amount of the two screen portions accommodated in the face memory 7. The difference amount is input to the amplitude image generating unit 40, and the difference amount of each element during the light-on period and the light-off period is regarded as the pixel value difference amount image, that is, the amplitude image is generated. The pixel values of the difference image ideally correspond to the received light intensity of the signal light, and the image sensor 2 can obtain the signal light amplitude reflecting the received light. For example, the image P1 corresponding to the fifteenth A picture can be obtained during the light-on period, and the image P2 amplitude image P3 corresponding to the fifteenth B picture can be obtained as shown in the fifteenth C-th picture. On the other hand, the amplitude image is eliminated from the object other than the object 〇b reflected in the target space, and only the object Ο b exists in the amplitude image (the pixel value other than the object Ob is 昼 black 昼). Further, the difference between the light-receiving output during the light-off period and the light-off period is not required, and the light-dark image including the background can be obtained by the light-receiving output of one of the light-on period and the light-off period. The number 8 in Fig. 14 is a saturation determination unit provided between the face memory 7 and the evaluation unit 4. In the saturation determination section 8, the light-receiving output regarding the light-on period and the light-off period can be compared with the magnitude of the saturation threshold specified for each element. For example, the light output of each element during the light-on period is set to Aa, the light output of each element during the light-off period is set to Ab, and the change of 32 I27284l of the ambient light is substantially as short as it is considered not to be generated. In general, Aa&gt;Ab, the light-receiving output Aa does not exceed the specified saturation threshold Th1, and the light-receiving mAb does not exceed the saturation threshold Th1. Therefore, the light-receiving output Aa of the saturation determining portion 8 during the light-on period can be compared with the size of the saturation threshold value (S3 in Fig. 16). The saturation threshold value Thl is a critical value for determining the saturation of the light-receiving output Aa, and the saturation determination unit 8 determines that the light-receiving output Aa is saturated when the light-receiving output does not exceed the saturation threshold value. Here, the saturation threshold and the light-receiving wheel exit Ab- and may be performed. The saturated light output Aa does not reflect spatial information. In other words, even if the evaluation unit 4 obtains the difference amount Δ A , the amplitude image cannot be generated. Therefore, when the saturation determination unit 8 is determined to be saturated, the difference amount calculation unit 44 instructs the output value as a predetermined value. In summary, the output of the saturation difference amount calculation unit 44 becomes a predetermined value. The maximum value or the central value of the allowable range of the output 隼 of the normal difference calculating unit 44 by the predetermined value or the specific value that is not output can be used by the phase difference amount calculating unit 44. For example, when 255 is expressed as 255, the light is emitted by Aa and Ab, and the maximum value is used as the predetermined value. When the output value of the difference amount calculation unit 44 uses the maximum value, the pixel in the saturation of the light receiving output Aa can be distinguished from the background. Further, by using the intermediate value of the output value range of the phase difference calculation unit 44, the difference between the saturated pixel and the surrounding pixel can be narrowed, and an amplitude image of the sense of disorder can be obtained. In addition, if the other values are not generated by the other factors (for example, if the difference between the 255th order is expressed by 254 and the "255" is the value that does not occur), then the specified value may be obtained. The element acts as an invalid pixel in the saturation of the light output Aa. In this case, if the saturated pixel is different from the other pixels when the pixel is 33 1272841, the amplitude image generating unit 40 can be an illuminating pixel and a peripheral pixel value. To make up ^. If the amplitude image of the empty space is used, then the image of the amplitude f 彡 异常 异常 异常 Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η Η However, the fixed value shows the suspected value of the amplitude image when the amplitude image is not saturated. The light output does not reflect the null signal. Therefore, it is necessary to adjust the f-plane $ contained in the face memory 7 in the case of the (four) threshold. In addition, as for the case of the above-mentioned image, the image of the object Qb is extracted for the purpose of removing the background. Therefore, if the light output of the object (10) is not saturated, the image can be obtained. Amplitude image of the purpose. Regarding the light output of the shirt image sensor 2, it is judged that there is "," in the designated field, and when the light output is saturated in the fingerprint field, if the object to be adjusted is to reduce the luminous intensity of the money 1 or lower The transmittance of the light receiving optical system 5 can reduce the saturation of the light receiving output by shortening the accumulation time of the image sensor 2 and reducing the light receiving output. 曰 , _ _ _ _ When the output is set to a predetermined value, it is possible to prevent the amplitude image from being misaligned, and the adjustment can reflect the predetermined value. In the field of designation, the field of existence of the object Ob is used. Such a designated field uses the output of the phase difference calculation unit 44. It is determined by the field specifying unit. That is, the field specifying unit' is the phase difference ΔΔ output from the phase difference calculating unit 44, and the field exceeding the effective value and the threshold value Th2 is regarded as the designated field (S7 of the sixteenth figure). S9). This side can obtain the designated field Da of the fifteenth D-picture 34 1272841 from the amplitude image p3 of the fifteenth C-picture. In addition, for example, the device is attached to the door. When the camera of the mouthpiece is used, the effective threshold Th2 can be set in advance from the face of the person within the prescribed distance range of the image sensor 2 of the object (10). Depending on the difference in reflectance or the difference in the distance between the bumps, the effective threshold value Th2 does not exceed the effective threshold (the replacement of the saturated portion of the received light output at the specified value does not exceed the effective threshold Th2). The field of the top value of the critical value is the (10) expansion process. Therefore, even if the area exceeding the effective threshold value Th2 as a whole is in the case of the threshold value Th2 of the field material, the part of the field can be taken into the designated field. For example, when the object Ob is a face, the reflectance of the eyes, eyebrows, hair, etc. is low, and the difference amount obtained by the difference amount calculation unit 44 is less than the effective threshold value Th2, but the face is overall Most of the factors that are more than effective than Th2 are used, so the eyebrows, hair, etc. can be taken into the eye-catching field in the expansion treatment. The brightness detecting unit 62 obtains an average value of the light receiving output of the pixels in the designated area detected by the field specifying unit 6A, and uses the flat value 'to obtain the adjustment amount applied to the adjustment target by the output adjusting unit 9. In other words, the brightness detecting unit 62 sets an appropriate brightness reference value corresponding to the object 〇b of the amplitude image in advance, and uses the reference value as a target to obtain the error of the average value. 9 The brightness adjustment unit determines the adjustment amount to be applied to the height adjustment target according to the given error. In the output adjustment unit 9, the light receiving output average in the specified area &amp; 35 1272841 = the reference value of the large material light output is determined in the τ drop direction. Adjustment of the adjustment image: On the contrary, the average value of the light output is higher than that of the standard Hungary, and the light output is increasing by ^4 (4). However, because there is a limit in the dynamic range of the respective objects, the status quo is maintained when the upper or lower limit is reached. In addition, the (4) Wei Zhilang object decides the priority position of each object in advance, and may change other adjustment objects when the upper limit or lower limit of the action range of any of the Na objects is reached. In addition, the amount of change in the amount of adjustment of the deer error may be variable. Furthermore, it is also possible to change the amount of material that is difficult to change once. When the error is large, the adjustment amount may be equal to the value of the number of changes. If the job is composed, it is possible to change the amplitude image chaos according to the amount of light corresponding to the moment. In addition, the average value of the light-receiving input on the reference value is the reference quality. (4) Prior* The amount of weaving in the light county can be prevented. A wasteful action of the entire object. In addition, it is preferable to set the initial value of the operation target to the upper limit of the operation range in advance. The field specifying unit 60, the brightness detecting unit 626, and the output adjusting unit 9 determine the amount of adjustment for the adjusted object based on the result of the case of the phase difference calculating unit 44. Also, the portion excluding the light source 影像 and the image sensor 2 in Fig. 14 is realized by executing a suitable program with a microcomputer. The operation of this embodiment will be briefly described based on the flowchart of the sixteenth embodiment. At the beginning of the operation of the apparatus, first, the object space photography by the image sensor 2 is performed (S1). In the above-mentioned mode, the light source is turned on and off during the light-off period. When the light-receiving output Aa (S2) of the light-on period is obtained, the saturation threshold value Thl can be compared with the light-receiving output Aa (3). When the light is transmitted, the difference between the light-receiving outputs Aa and Ab is ΔA (S4). On the other hand, when the light-receiving output Aa exceeds the saturation threshold Th1, the difference amount Δ a is regarded as a predetermined value (S5). The difference amount Δ A obtained by this is output as an amplitude image by the amplitude image generating unit 40 (S6). The phase difference calculation unit 44 also sends the difference Δ A obtained to the field specifying unit 60. The difference Δ a between the field specifying unit 60 and the effective threshold value Th2 is compared (S7). A pixel that exceeds the effective threshold Th2 is treated as a φ-specified domain memory (S8). This processing is performed by taking all the elements of the amplitude image as objects (S9). When the difference amount ΔΑ exceeds the effective value Th2, the luminance detecting unit 62 can obtain a flat sentence value for the pixel difference ΔΑ in the specified field (S10). In the output adjustment unit 9, the average value of the difference amount ΔA in the designated area is compared with the reference value (S11), and when the average value of the difference amount ΔA is larger than the reference value, the adjustment target is adjusted to reduce the received light output ( S13) When the average value of the difference amount Δ A is equal to or less than the reference value, the adjustment target is subjected to an increase in the output by the adjustment amount (S15). However, since there is an upper limit and a lower limit in the adjustment range of the adjustment target, the amount of adjustment in the light-receiving output direction is minimized (S12), or when the adjustment amount in the light-receiving output direction is increased to the maximum (S14), the adjustment amount is not changed. Photography down (S1). In the above-described operation, the adjustment target is given an instruction from the output adjustment unit 9 when the phase difference between the light-receiving output and the light-receiving output is obtained once, but the output adjustment unit 9 seeks from the shell level detecting unit a. The state in which the light receiving output is larger than the reference value is continuously generated a predetermined number of times, or when the average value of the light receiving output obtained by the detecting unit 62 is continuously generated a predetermined number of times 37 1272841 'The configuration for giving an instruction to the adjustment target may be used. . Further, in order to prevent hunting of the adjustment target, the output adjustment unit 9 may hold the history mode. For example, after the average value becomes larger than the reference value and the adjustment target is given a lower light receiving output instruction, even if the average value becomes smaller than the reference value, if the absolute value of the error is not above the predetermined value, the increased light output is not given. In contrast, when the average value becomes smaller than the reference value and the adjustment target is given an increase in the received light output indication, even if the average value becomes an error larger than the reference value, if the absolute value of the error is not above the predetermined value, Give an indication to reduce the light output. Further, instead of counting the average value of the light output by the brightness detecting unit 62, the number of pixels in which the light receiving output exceeds the reference value is counted in the designated area, and the amount of adjustment may be determined based on the number. In addition, in the case described above, the average value of the light-receiving output of the designated area is compared with one reference value, but the reference value may be set in advance in the plural stage, and the adjustment amount of the adjustment target may be changed at each stage. Furthermore, when the reference value is set in the complex phase, the number of pixels in each phase is counted, and the adjustment amount may be determined in the case where the maximum degree of the corresponding degree is obtained. When the field specifying unit 60 extracts the designated area, the difference amount obtained by the phase difference calculating unit 44 is multiplied by the coefficient and the effective threshold value Th2 is compared, and the coefficient is multiplied by the difference amount in the brightness. The average value of the received light output obtained by the detecting unit 62 may be changed in the plural stage. The coefficient is set to be smaller as the average value becomes smaller. For example, if the average value of the light output output in the specified field is small and dark, the coefficient is multiplied by the factor of the difference, and the specified area is widened and extracted. The way of the scope. Here, 38 I27284l' is used as the coefficient of determination to obtain the average value in the luminance detecting unit 62. However, other values may be used as the representative value. In the case where the object Ob is far away or the reflectance of the object 〇b is low, the signal light amplitude is small by widening the specified field to increase the possibility that the object 〇b is included in the designated field. By operating the distance to the object 〇b or not changing the reflectance of the object 〇b, the pixel value of the corresponding object 〇b can be substantially stored within a predetermined range, and the amplitude image generating unit 40 can be obtained. The object is an easy-to-see amplitude image. In the above-described configuration example, in the field of obtaining the light-receiving output average value (or the pixel value satisfying the predetermined condition), the brightness detecting unit 62 does not necessarily extract the field of the object Ob, but the field setting unit 60 can When the entire pixel in the image is set as the designated area, the area specified in the center of the image is set as the designated area, and the appropriate place in the image is set to the designated area. As for how to set the designated area, it is only necessary to appropriately select the designated area. However, when the designated area is determined in advance, the field specifying unit 60 specifies the designated area regardless of the amount of difference obtained by the difference amount calculating unit 44. Further, the kneading surface memory 7 maintains only one portion of the light-receiving output during the light-off period and the light-off period, and the phase difference amount calculation unit 44 determines the difference between the light-receiving outputs of one of the light-on period and the light-off period. However, it is also possible to add and receive the received light output for each of the plurality of copies during the light-on period and the light-off period in the frame memory 7. In this case, the processing of the difference amount calculation unit 44, the saturation determination unit 8, and the metric detection unit 62 is performed by using the turn-on period and the off-light period 39 1272841 • the total value of the plurality of copies, so that the light-receiving output can be controlled. noise. In addition, the average value obtained by dividing the total value by the number of times the light-receiving output is taken out may be used. Further, the difference amount obtained by the difference amount calculation unit 44 is added, and the total value of the difference amount or the average value of the difference amount may be used. When the average value of the light-receiving output or the average value of the light-receiving output is used as the above case, if one of the number of additions and the divisor is changed, the coefficient used when the field specifying unit 60 detects the specified field can be expected and changed. The same effect is seen in the case. In addition, by using the average value of the light-receiving output average or the light-receiving output difference amount, the ratio of the light-receiving output during the light-on period and the light-off period is reduced by only one time, but the short-term noise generated by the image sensor 2 can be reduced. Therefore, it is also possible to increase the number of additions in a room with less ambient light, etc., and to reduce the influence of noise. The control signal for controlling the flashing light source is not only a rectangular wave, but also a sine wave, a corner wave, a sawtooth wave, or the like. In this case, the image sensor 2 • * receives the received light output at the same time in the specific two sections with different phases of the modulation signal, and even if the difference in the received light output of the two sections is obtained, the ambient light is removed. Images with similar amplitude images are available. Further, the width of the section taken out from the shirt image sensor 2 can be appropriately selected. However, when the phase difference between the two sections is different by 180 degrees, the same operation as in the case where the difference between the light-on period and the light-off period is substantially achieved is obtained. However, the phase difference between the two sections can also be outside the range of 18 degrees. Further, it is possible to manufacture various configurations on the light receiving light (four) 5, and it is preferable to use an external signal to adjust the opening diameter when using the aperture shutter. In addition

The spatial information of the embodiment detects the state of the fourth A picture and the state of the product part; 1272841, and the shutter and the lens can also be prepared with different transmittances, several numbers of filters, or according to external signals. Choose which light-reducing filter to use. Alternatively, it is also possible to use a liquid crystal dimming filter and then change the transmittance by an external signal. [Industrial Applicability] As soon as (4), you can understand that the space detection device of the present invention and the composition device of Yuzhi refining can effectively remove the influence of ambient light and implement the system for receiving light output saturation. Since the output adjustment processing can stably obtain a meaningful amplitude image, it is possible to detect information on the target space with high reliability in a desired field, and is expected to have a wide range of uses. [Simple description of the figure] ^ Figure is a block diagram of the first device of the present invention; :, Xing second pass: an action description diagram for the use of the spatial information detecting device; Off: For the light source to open and close the period and the reflected light &lt; Four B diagram: the fifth diagram of the charge when the light source is turned on and off; when the ambient light intensity changes, the output of the received light element is shown in Figure 6A and Light-receiving period diagram of the first light; six off: for displaying the opening and closing period and reflection of the light source 1272441, the seventh and seventh seventh diagrams: in order to display the second change case of the first embodiment, when the light source is turned on and off Schematic diagram of the state of the charge accumulating portion; FIG. 8A and FIG. 8B are diagrams showing the state of the charge accumulating portion when the light source is turned on and off when the third modified case of the first embodiment is displayed; A block diagram of a spatial information detecting apparatus according to a second embodiment of the present invention; a tenth A picture: a case of a shading image; a tenth B picture: an amplitude image of the tenth A picture; and a tenth C picture: a tenth A Amplitude differential image of the graph; tenth D map : is the amplitude slope direction image of the tenth A picture; the eleventh A picture and the eleventh B picture: an explanatory diagram for displaying the amplitude direction direction image from the amplitude image; twelfth A to twelfth C Figure: is an explanatory diagram of the extraction method of the feature point with the face as the object, the thirteenth Ath to the thirteenth Cth: an explanatory diagram of the method for extracting the feature point from the amplitude slope direction; A block diagram of a spatial information detecting apparatus according to a third embodiment of the present invention; a fifteenth to fifteenth D: a schematic diagram showing an image captured by the spatial information detecting apparatus in relation to the third embodiment; and a sixteenth diagram : A flowchart showing the operation of the spatial information detecting device in the third embodiment. 42 1272841 [Description of main component symbols]

Light source 1 Amplitude image generation unit 40 Image sensor 2 Dim image generation unit 42 Control circuit 3 Feature extraction unit 50 Evaluation unit 4 Similarity calculation unit 52 Light-receiving optical system 5 Target recognition unit 54 A/D conversion unit 6 Provisional image creation memory Part 56 Screen Memory 7 Light-receiving output Aa, Ab Saturation determination unit 8 Light-on period Ta Output adjustment unit 9 Light-off period Tb Semiconductor layer 11 Image PI, P2 Insulating film 12 Amplitude image P3 Potential well 14 Threshold value Thl Effective by light element 20 Threshold value Th2 photoelectric conversion unit 22 object Ob electrode 24 difference amount ΔΑ light shielding film 25 filter hx, hy charge storage unit 26 object 电荷 charge extraction unit 28 delay time Td field specifying unit 60 brightness detecting unit 62 43

Claims (1)

1272841 X. Patent application scope: 1. A spatial information detecting device, comprising: at least two light receiving light from a target space illuminating a light having a regulated frequency of a predetermined number of cycles, generating a power equivalent to the received light intensity a photoelectric conversion unit; at least one electrode provided in each of the photoelectric conversion units; formed on the photoelectric conversion unit by applying a control voltage to at least one of the electrodes, and accumulating at least a part of the charge generated by the photoelectric conversion unit a charge storage unit; controlling a control device for printing a control voltage on at least one of the electrodes in the case where the area of the two different sections of the charge accumulation unit is different; and outputting the charge accumulated in the charge accumulation unit Charge extraction unit; The charge storage unit of the photoelectric conversion unit formed by the square-side is charged in the above-mentioned two sections, and the charge accumulation part by the photoelectric conversion unit formed in the other side is in the above-mentioned The evaluation unit of the target space is evaluated by the amount of difference between the electric charges accumulated in the other side. The space information detecting device according to the first aspect of the invention, wherein at least the two material conversion units are from a light-irradiated object, = light, and the control skirt is in a blinking light period and When the area of the light-off period is different, the area of the squid is controlled to be printed on at least one of the above-mentioned electrodes. (4) (4) 'The evaluation unit uses the I 44 1272841 difference amount evaluation target space formed by the photoelectric conversion unit of the square. In the charge conversion section, the accumulated charge during the _light turn-on period is switched from the other side of the photoelectric? ! Type 5: The charge accumulation unit's accumulated charge during the flashing of the light. 3. The spatial information detecting device described in the first paragraph of the patent (4): The above-mentioned at least i electrode-based complex electrode 'control device The number of electrodes that control the printing control voltage changes the area of the charge accumulating portion. 4 Such as the scope of patent application! The spatial information detecting device according to the above aspect, wherein the evaluation unit includes an amplitude image generating unit that generates the amplitude image by using the difference amount as a stitch value. 5. If the spatial information detecting device described in the patent application scope 帛i, ^ further includes the amplitude difference image generated by the above-mentioned difference amount #成昼素值, the amplitude image is generated 4' each element during the light-on period of the flashing light and During the light-off period, the electric charge accumulated in the electric accumulating portion and the average amount of electric charge accumulated in the electric charge accumulating portion during both the light-on period and the light-off period generate a shading image generating portion of the narrative image. The space information detecting device according to claim 2, wherein the control device controls the printing in the case where the area of the charge storage portion formed by each of the photoelectric conversion units changes in synchronization with the blinking light blinking time. i Control voltage on at least 1 electrode. 7. The space information detecting device according to claim 6, wherein the control device is a charge accumulation 45 I272841 formed by one of the photoelectric conversion portions, and the P surface is larger during the light-on period than during the light-off period, and When the area of the charge storage unit formed by the photoelectric conversion unit is larger than the light-on period, the control voltage applied to at least one of the electrodes of each of the photoelectric conversion units is controlled. 8. The space information detecting device according to the seventh aspect of the invention, wherein the control device is a charge accumulation phase formed by one of the photoelectric conversion portions during the light-on period and a photoelectric conversion portion of the light-off lamp. In the case where the formed charge accumulation portion area is equal, the control voltage applied to the at least one electrode of each of the photoelectric conversion units is controlled. 9. The space information detecting device according to the fourth aspect of the patent application is further improved, and according to the amplitude image generated by the amplitude image generating unit, the feature amount extracting unit that extracts the amount of the object having the object space_ The similarity portion of the image length is calculated by the above-described feature amount, and when the similarity degree is the predetermined gamma, the object #phase is the object recognition unit that is recognized by the object of the tentative image. I (7), such as the space information detecting device described in the patent scope #9, wherein the object is a face-space information detecting device, and further comprises a tentative image memory unit for storing a tentative image of the face beforehand according to the facial feature quantity, The object recognition department is the similarity between the facial feature quantity extracted by the feature quantity and the tentative image of the tentative image memory part. The above-mentioned face is the same as the face number. people. In the space information detecting device according to the fourth aspect of the invention, in the second aspect, at least one of the two different sections of the control signal phase includes the charge amount accumulated by the charge storage unit and the saturation of the predetermined value. The determination unit' and the wheel-out adjustment device that adjusts the power output corresponding to the light-receiving intensity are adjusted based on the result of the comparison. For example, the space information detecting device described in the patent scope ’u, wherein the output adjusting device is larger than the critical value, reduces the power output of the optical power conversion unit. The space information detecting device according to claim 4, wherein at least one of the two sections having different phases of the control signal includes a saturation determination unit that compares the amount of charge accumulated by the charge storage unit with a predetermined threshold value. When the amount of charge is larger than the critical value, the evaluation unit replaces the difference amount evaluation target space with a difference value set in advance. 14. The spatial information detecting apparatus according to item 4 of the patent application scope, wherein φ, when accumulating in a complex period corresponding to the control signal, has a charge amount accumulated in two individual sections different in phase of the control signal A saturation determination unit that compares with a predetermined threshold value, and an output adjustment device that adjusts the power storage output corresponding to the received light intensity by changing the accumulation time based on the comparison result. The space information detecting device according to claim 4, wherein in the one cycle of the control signal, the amount of charge accumulated in two individual intervals in which the phase of the control signal is different is compared with a predetermined threshold value. The full-size 47 1272841 and the determination device adjust the length adjustment device 48 corresponding to the light-receiving intensity power output by adjusting at least one of the two intervals different in accordance with the comparison result.