TWI629647B - Viedo-recording and target-counting device - Google Patents

Abstract

A photographic counting device includes a photographic lens, a controller and an image processor, wherein the photographic lens is electrically connected to the controller and the image processor. The controller controls the photographic lens to take a first time period to acquire a plurality of images. The image processor obtains a plurality of initial estimated quantities according to part of the image and the discriminant model obtained in the second time, and obtains and records a target object in the shooting range of the photographic lens according to the initial estimated quantity. The quantity, where the second time is at least twice the first time.

Description

Photogram counting device

The present invention relates to a counting device, and more particularly to a counting device having a photographic lens.

In the management of public places such as parking lots, stores, or department stores, the control of the number of visitors is an important matter for maintaining environmental quality. Therefore, counting devices are often provided in the above places to count the number of visitors. For example, a card-type counting device can be provided in the parking lot to provide a card to the guest when the bus enters the store, and to collect the card when the bus leaves the field to calculate the number of cars. However, in the case of a large number of targets, such as a store that controls the number of visitors or a department store, the card-type counting device will make the admission procedure cumbersome, so in such cases, an optical counting device is usually provided. (for example, infrared or light-interrupted) at the door to count the number of visitors.

However, since the infrared type counting device counts the body temperature, the sensitivity is low and the response is not fast. The light-interrupting counting device increases the number of statistics when the beam is blocked, so when there are many people entering the door at the same time, the light-interrupting counting device may only judge that one person is admitted, and in addition, when non-human Objects passing through the door may also be included in the statistician to reduce the accuracy of the discrimination.

In view of the above, the present invention provides a photographing and counting device that processes a photographed image to count the number of specific objects.

A photographing and counting device according to an embodiment of the invention includes a photographing lens, a controller and an image processor, wherein the photographing lens is electrically connected to the controller and the image processor. The controller controls the photographic lens to take a first time period to acquire a plurality of images. The image processor obtains a plurality of initial estimated quantities according to part of the image and the discriminant model obtained in the second time, and obtains and records a target object in the shooting range of the photographic lens according to the initial estimated quantity. The quantity, where the second time is at least twice the first time.

With the above configuration, the photographing and counting device disclosed in the present invention can prevent the number of objects from constantly changing, and the number of discriminating the target object frequently needs to be updated or a large number of discriminating records can be recorded through the setting of the image capturing period and the image processing recording time. In the case of quantity, the load of image processing is reduced and the amount of storage space in the device is reduced. In addition, the accuracy of the number of determinations can be improved by multi-image integration to obtain the number of discriminants.

The above description of the disclosure and the following description of the embodiments of the present invention are intended to illustrate and explain the spirit and principles of the invention, and to provide further explanation of the scope of the invention.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

The photographing counting device provided by one or more embodiments of the present invention is for discriminating the number of specific objects within the shooting range. For example, if the photographing counting device can set the target object to be a person, the photographing counting device can determine the number of people in the shooting range. The target can also be set as a pet or other object, and the invention is not limited.

Referring to FIG. 1 , FIG. 1 is a functional block diagram of a photographing and counting apparatus according to an embodiment of the invention. As shown in FIG. 1 , the photographing and counting device 1 includes a photographing lens 11 , a controller 12 , and an image processor 13 , wherein the photographing lens 11 is electrically connected to the controller 12 and the image processor 13 . The photographic lens 11 is, for example, a standard type, a hemispherical ceiling type or other type of lens for obtaining an image within a shooting range. In this embodiment, the photographing range of the photographing lens 11 is negatively correlated with the focal length, and the shorter the focal length of the photographing lens 11, the wider the photographing range, and the longer the focal length, the narrower the photographing range.

The controller 12 is, for example, a microcontroller, a programmable logic controller or other controller, and controls the photographic lens 11 to take a plurality of images at a first time period, wherein the first time can be a preset of the photographic lens 11 The shooting period or the time set by the user, and the number of images captured by the taking lens 11 may also be a preset value or a user setting value in the controller 12.

The image processor 13 is, for example, a digital signal processor (DSP) with built-in memory. The image processor 13 obtains a plurality of initial estimated numbers based on the image and the discrimination model acquired by the photographing lens 11 in the second time. In detail, the second time may be a preset value or a user set value in the image processor 13, which is at least twice the first time, that is, in the second time, the photographic lens 11 obtains The number of images is at least two. The image processor 13 operates the images separately from the discriminant model to obtain a corresponding estimated number. For example, the discriminant model is a convolutional neural network (CNN), a deep neural network (DNN), or other models. The discriminant model can be built into the memory or set by the user.

The image processor 13 then acquires and records the number of discriminants of an object within the photographing range of the photographing lens 11 based on these estimated numbers. For example, the image processor 13 may perform an average calculation on the initial estimated number corresponding to each image in the second time, and use the calculated average value as the discriminant quantity of the target object and record it in the memory. Thereafter, the image processor 13 performs the above operation in a second time period to update the number of discriminations of the target. In another embodiment, the image processor 13 records the result of each operation as a plurality of discriminating numbers in a second time period. According to the calculation by the image processor 13, when the target object is set as an animal body such as a person or a pet, it is possible to avoid a situation in which the number of objects constantly changes and it is necessary to frequently update the number of determinations or record a large number of determinations.

Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of a photographing and counting apparatus according to another embodiment of the present invention. Compared with the photographing and counting device 1 shown in FIG. 1, the photographing and counting device 1' in this embodiment also includes a photographing lens 11, a controller 12, and an image processor 13, and its structure is substantially similar to that of the photographing and counting device of FIG. 1, so I won't go into details. However, the photographing counting device 1' of this embodiment further includes a rotating base 14, which is electrically connected and controlled by the controller 12 to rotate. The photographic lens 11 is disposed on the spin base 14 and rotates with the spin base 14 to take a plurality of sub-images in a plurality of directions and transmit them to the image processor 13. The image processor 13 then synthesizes the received sub-images according to the weight function to generate a set image, which is used as the controller 12 in the above embodiment to control the photographing lens 11 to obtain a plurality of images in a first time period. one of them. That is, in this embodiment, the controller 12 controls the photographic lens 11 to perform a shooting process every first time. The shooting process includes capturing a plurality of sub-images in multiple directions, and then synthesizing the sub-images by the image processor 13 to Get the image.

Please refer to FIG. 2, FIG. 3A and FIG. 3B to illustrate the shooting process. FIG. 3A is a schematic diagram of the shooting angle of the photographing and counting device according to another embodiment of the present invention, and FIG. 3B is based on the present invention. A schematic diagram of an image processing weight function of the photographing and counting device shown in an embodiment. As shown in FIG. 3A, with the preset position of the photographic lens 11 at 0 degrees, the rotator base 14 can rotate the photographic lens 11 within an angular range of -90 degrees to 90 degrees. In this embodiment, the controller 12 can set the photographic lens 11 to shoot at the same interval angle within the range of angles (for example, to shoot a sub-image every 10 degrees from a -90 degree angle) or to a plurality of specific rotations. Shoot at an angle. Different angles of rotation may correspond to different image processing weights. In general, since the preset position of the photographing lens 11 is set toward the center of the photographing environment, when the rotation angle of the photographing lens 11 is large, the photographed sub-screen corresponds to the edge of the photographing environment. Therefore, as shown in FIG. 3B, the image processing weight function can be designed to exhibit a Gaussian distribution with respect to the rotation angle to focus on the image at the center of the shooting environment. In addition, the weight function can also be designed as other relations according to actual needs.

The photographing counting device 1' may include a signal transceiver 15 in addition to the photographing lens 11, the controller 12, and the image processor 13. The signal transceiver 15 is, for example, a wired signal or a wireless signal transceiver, and is electrically connected to the controller 12, and sends a notification signal about the target quantity to the network platform or a user device such as a mobile phone, a tablet, or an individual according to the control command. Computer, etc. In one embodiment, the controller 12 generates a control command when the image processor 13 records the number of determinations, that is, the photographing counting device 1' transmits an associated notification signal each time the number of objects is discriminated. In another embodiment, the controller 12 is electrically connected to the image processor to obtain the discriminant quantity of the target object and determine whether it is greater than or equal to a preset threshold value. When the controller 12 determines that the number of determinations is greater than or equal to the threshold value, a control command is generated to transmit a notification signal regarding the number of determinations. For example, the notification signal indicates the value of the discriminating quantity. As another example, the notification signal indicates the relationship between the number of discriminants and the threshold value. The present invention does not limit the form of indication of the notification signal.

In addition to this, the photographing counting device 1' may further include a user interface 16. The user interface 16 is electrically connected to the controller 12 and the image processor 13 to provide an operation platform for the user to input one or more parameters of the first time, the second time, and the determination type. The user interface 16 can also be used to generate a control command for transmitting a notification signal and to set the aforementioned weight function. In particular, the spin base 14, the signal transceiver 15 and the user interface 16 in the above embodiment are components selectively provided in the photographing counting device.

Referring to FIG. 4, FIG. 4 is a functional block diagram of a photographic counting device according to another embodiment of the present invention. As shown in FIG. 4, the photographing counting device 1" includes a photographing lens 11a, a controller 12, and an image processor 13, and these component structures are substantially similar to the photographing counting device 1 of Fig. 1, and therefore will not be described again. The photographing counting device 1" further includes a second photographing lens 11b electrically connected to the controller 12 and the image processor 13. In this embodiment, the controller 12 controls the photographic lens 11a to take a first time period to capture a plurality of first images, and also controls the second photographic lens 11b to take a third time period to obtain a plurality of second images. image. As described above, the image processor 13 calculates the first image and the second image acquired in the second time by using the discriminant model to obtain a plurality of first estimated quantities and a plurality of second estimated numbers, respectively. The second time is at least twice the first time and at least twice the third time. For example, the first time is equal to the third time. Next, the image processor 13 calculates the average of the first estimated number and the second estimated number, respectively, and the larger of the two is used as the discriminant quantity.

In this embodiment, the photographing and counting device 1 ′′ may also include the rotating base 14 , the signal transceiver 15 and the user interface 16 in the foregoing embodiments, and the connection relationship and function thereof will not be described herein. The example is exemplified by a photographing counting device including two photographic lenses. However, in other embodiments, the photographic counting device may include two or more photographic lenses, and the number of objects is discriminated by the above method.

With the above configuration, the photographing and counting device disclosed in the present invention can prevent the number of objects from constantly changing, and the number of discriminating the target object frequently needs to be updated or a large number of discriminating records can be recorded through the setting of the image capturing period and the image processing recording time. In the case of quantity, the load of image processing is reduced and the amount of storage space in the device is reduced. In addition, the accuracy of the number of determinations can be improved by multi-image integration to obtain the number of discriminants.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

1, 1', 1" ‧ ‧ photography counting device

11, 11a‧‧‧Photographic lens

12‧‧‧ Controller

13‧‧‧Image Processor

14‧‧‧Spinning base

15‧‧‧ Signal Transceiver

16‧‧‧User interface

11b‧‧‧second photographic lens

1 is a functional block diagram of a photographing and counting device according to an embodiment of the invention. 2 is a schematic structural diagram of a photographing and counting apparatus according to another embodiment of the present invention. FIG. 3A is a schematic diagram of a photographing angle of a photographing and counting device according to another embodiment of the present invention. FIG. 3B is a schematic diagram of an image processing weight function of a photographing and counting apparatus according to another embodiment of the present invention. 4 is a functional block diagram of a photographing and counting device according to still another embodiment of the present invention.

Claims (9)

A photographic counting device includes: a photographic lens; a second photographic lens; a controller electrically connected to the photographic lens and the second photographic lens, and the photographic lens is controlled to be taken at a first time period to obtain a plurality of images, and controlling the second photographic lens to take a third time period to obtain a plurality of second images; and an image processor electrically connected to the photographic lens and the second photographic lens, according to a part of the images and a discriminant model obtained in a second time obtain a plurality of initial estimates, and obtain a plurality of second preliminary estimates according to the obtained second images and the discriminant model obtained in the second time. Quantity, and selecting the average of the average of the estimated quantities and the average of the second estimated numbers as the discriminating quantity of a target in the shooting range of the photographic lens, and recording the discriminating quantity; The second time is at least twice the first time, and the second time is at least twice the third time. The photographing counting device of claim 1, further comprising a rotating base electrically connected and controlled by the controller to rotate, wherein the photographing lens is disposed on The rotating base is configured to rotate a plurality of sub-images in multiple directions, and the image processor is further configured to synthesize the sub-images according to a weight function to generate the images. One. The photographing counting device according to claim 2, wherein the directions respectively correspond to a plurality of rotation angles, and the weight function has a Gaussian distribution with respect to the rotation angles. The photographic counting device of claim 1 further includes a signal transceiver electrically coupled to the controller for transmitting a notification signal regarding the determined number according to a control command. The photographing counting device according to claim 4, wherein the controller generates the control command when the image processor records the discriminating amount. The photographing counting device according to claim 4, wherein the controller further generates the control command when determining that the discriminating amount is greater than or equal to a threshold value. The photo counting device of claim 4 further includes a user interface electrically connected to the controller and configured to generate the control command. The photographic counting device of claim 1, further comprising a user interface electrically connected to the controller and the image processor for inputting the first time, the second time, and the discriminating type One or more. The photographing counting device according to claim 1, wherein the discriminant model is a convolutional neural network (CNN) or a deep neural network (DNN).