KR101413543B1 - Portable Magnifying Apparatus which have Mirror Device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable image enlarging device that is easy to carry, and more particularly, to a portable image enlarging device having a mirror function capable of displaying a user-side image.

Description

(Portable Magnifying Apparatus which has Mirror Device)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable image enlarging device that is easy to carry, and more particularly, to a portable image enlarging device having a mirror function capable of displaying a user-side image.

In general, the term "visual impairment" refers to a state in which vision is lost due to various ophthalmologic diseases, and even the wide angle is lost, so that it is impossible to distinguish between contrast and darkness. However, the degree of knowing the distinction between contrast and hand Persons with severe amblyopia can also be included in the blind. Low vision, which is the highest percentage of visually impaired persons, is caused by weakening of the lens, iris, retina, and body boundary. It can not be done.

The image magnifying device is a device for magnifying and displaying images of difficult subjects such as books, vials, check or money in order to complement the eyesight of such low vision or aged people.

Particularly recently, a portable image enlarging device which is small in size and easy to carry and easy to operate has been preferred, and such a portable image enlarging device can be broadly divided into a base enlarger and a hand-held expander.

The base enlarger is a structure in which a pedestal is placed at the bottom of the main body and the pedestal is stretched when viewed close to the ground, or the main body is wrapped around the hand, and the pull magnifier is held by hand.

The base enlarger is a structure that wraps the main body with the hand when the user wants to use it because there is no handle, and it is inconvenient to carry the main body by the person who has a hand uncomfortable or a thumb or index finger. In addition, the base enlarger needs to hold the main body when it is desired to reduce the size of the object, and if enlarged, the original image is simply enlarged through the digital zoom to deteriorate the image quality. In addition, when the illuminator of the expander is distant from the subject, the image quality is deteriorated due to the influence of the illumination.

The hand-held expander is convenient to carry by hand, but it is wobbled because the center of gravity of the expander is wobbly to be used on the ground, and the battery is built in the body, and the center of gravity is directed toward the body, . In addition, since the handle-type expander is located on the straight line with the body, when the expander is to be used at the most comfortable angle, the wrist must be twisted. This is a limitation for people with weak wrists such as wrist tunnel syndrome.

In addition, there is a difficulty in visually handicapped people who have a narrow focus on objects, inaccurate color information, and narrow vision compared to those who have the same face, This is a very limited part of the system and it can not be seen in detail because it needs to be grasped in real time.

In the case of a mobile phone employing a front camera that provides a self-camera and a mirror function, although the user side image is provided in real time, the image is not clear at close range, only a limited range of images can not be confirmed, And has a touch screen and a small-sized user interface which are difficult to use for a low vision person, and thus, there is a restriction in use.

Accordingly, development of a portable image enlarging device having a mirror function that solves the above problems is required for low vision and visually impaired persons.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a portable image enlargement device which provides a user-side image and has a front camera capable of sharpening a close- .

In addition, it is easy to recognize that the blind is visually impaired, and it is possible to realize a portable type portable terminal having a user interface capable of switching between a still image and a real-time image for a user-side mirror image and enlarging or reducing a still image, And an image enlarging device.

A portable image magnifying apparatus of the present invention comprises: a body; A first camera unit installed on a rear surface of the body for acquiring a subject-side image; A second camera unit installed on a front surface of the body for acquiring a user's image; An output unit installed on a front surface of the body for receiving and outputting an image of the first camera unit or an image of the second camera unit; And a handle having a front end hinged to a rear surface of the body so that the angle of the body can be adjusted in a horizontal direction; .

In addition, the present invention provides a wireless communication system including a first UI that is provided on at least one side of a longitudinal direction of the body for receiving user input; And the first UI is inclined toward the front of the body at a predetermined angle.

In addition, the present invention includes a second UI provided on an entire front surface of one end of the handle for receiving a user's input, and the second UI is provided on the handle in a depressed shape.

In addition, the present invention provides a display apparatus comprising: a third UI provided adjacent to the second camera unit to receive a user input; And the third UI is protruded outside the front surface of the body.

In addition, the image of the second camera unit output to the output unit can be switched to a pause image or a real time image through a calculation module provided in the body, and the pause image can be enlarged or reduced do.

The portable image enlarging apparatus having a mirror function according to the present invention has a front camera for providing a user-side image and provides a mirror function. In addition, a portable image enlarging apparatus having a mirror function can be easily used by low- There is an advantage. Especially, it provides a user interface that is easy to use for low vision and visually impaired people, so that it is easy to operate.

In addition, there is a problem that it is difficult to identify a region other than the eye when a general mirror is used because the focal length of the low vision eye is short, but it is easy to identify a specific region of the face through the pause function for the mirror image of the present invention, It is possible to recognize the image more clearly so that the low vision power can be used effectively.

1 is an overall perspective view of an image enlarging apparatus of the present invention.
2 is a bottom perspective view of the image enlarging device of the present invention
3 is a bottom view of the image enlarging device of the present invention
Fig. 4 is a diagram showing the operating state of the knob of the present invention (when using the right hand)
Fig. 5 is a view showing the operating state of the knob (when using the left hand)
Fig. 6 is a view showing the grip operating state of the present invention (in common use)
FIG. 7 is a view showing the operating state of the knob (adjusting the tilt angle)
Fig. 8 is a view showing the operating state of the pedestal of the present invention
9 is a block diagram of an image enlargement apparatus of the present invention

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 4, an image enlarging apparatus 100 according to the present invention includes a body 100a, a first camera unit 110, an output unit 120, an LED illumination unit 130, an input unit 140, a UI A user interface part 150, 210 and 310, a pedestal 160, a calculation module 170, a grip 200 and a second camera part 300.

1 to 3, the body 100a is formed in a rectangular enclosure having a space therein and having a thickness. 3, the lateral direction is referred to as a longitudinal direction, the longitudinal direction is referred to as a lateral direction, the side where the output section 120 of the body 100a is located is referred to as a front side, the first camera section 110) is defined as a rear side. On the rear surface of the body 100a, an input unit for photographing a subject, such as the first camera unit 110 and the LED illumination unit 130, is formed along the longitudinal direction at the center in the width direction. A knob 200 is coupled to one side of the rear side of the body 100a in the width direction and a pedestal 160 is provided on the rear side of the knob 200 and the other side in the width direction of the body 100a. A second camera unit 300 for taking a picture of a user and an output unit 120 for displaying a subject to be imaged are formed on a front surface of the body 100a and a front surface of the body 100a and a handle 200 UI units 150, 210, and 310 for operational convenience are formed. Inside the body 100a, the above-described configurations may be connected, and a control circuit such as a calculation module 170 may be incorporated. Since the image magnifying apparatus 100 having the above-described structure is provided with the handle 200, the size of the body 100a may be larger than the hand.

Referring to FIG. 3, the first camera unit 110 may be installed at the center of the rear surface of the body 100a so that the first camera unit 110 can photograph a straight object or a long distance object. The first camera unit 110 includes a lens unit and a CMOS sensor. The lens unit acquires an image of a subject, and the CMOS sensor unit converts a physical image signal obtained through the lens unit into an electrical signal. Therefore, the image acquired by the CMOS sensor unit is image data. For example, the image may be converted into image data in a format such as SVGA (800 * 600), YUV 422, 30f / s, Progressive, etc. through a CMOS sensor unit.

The LED illumination unit 130 may be provided on the rear surface of the body 100a. And more specifically may be installed in the vicinity of the first camera unit 110. This is for brightening the subject so that the first camera unit 110 can easily acquire an image of the subject. The LED lighting unit 130 may be a commonly used light emitting diode device. At this time, the LED illumination unit 130 operates under the control of the calculation module 170 to operate only when the subject is close-up. Thus, power consumption can be reduced, and the limited use time, which is a disadvantage of portable devices, can be increased. A plurality of LED lighting units 130 are configured, and the number of LED lights operated according to the distance of the subject can be adjusted.

The second camera unit 300 is installed on the front surface of the body 100a so as to capture an image of the user side on which the output unit 120 is formed and is disposed on one side in the longitudinal direction of the body 100a Can be installed in the center. The second camera unit 300 may have the same lens unit and CMOS sensor unit as the first camera unit 110. The lens unit acquires a user side mirror image, and the CMOS sensor unit converts a physical image signal obtained through the lens unit into an electrical signal. Therefore, the image acquired by the CMOS sensor unit is image data. For example, the image may be converted into image data in a format such as SVGA (800 * 600), YUV 422, 30f / s, Progressive, etc. through a CMOS sensor unit.

The image output through the second camera unit 300 can be controlled to be switched to a still image or a real time image through the calculation module 170. [ Also, the still image can be controlled to be enlarged or reduced through the calculation module 170. [

Referring to FIGS. 1 and 4, the UI unit includes a first UI 150, a second UI 210, and a third UI 310. The first UI 150 is provided on the other side in the longitudinal direction of the front face of the body 100a. The first UI 150 is provided to be inclined toward the front of the body 100a in the direction of the handle 200 at a predetermined angle. This is for the purpose of facilitating the adjustment with the thumb when the user grasps the grip 200. The first UI 150 accepts a user's input value as a click of a button and transmits the input value to the operation module 170 through the input unit 140.

The first UI 150 is composed of a plurality of buttons along the width direction of the body 100a, for example, a combination of the first button and the third button.

The first button transmits an input value to the input unit 140 through a click to change the color of the image output through the output unit 120.

The second button transmits an input value to the input unit 140 through a click to change the brightness of the image output through the output unit 120.

The third button transmits the input value to the input unit 140 through clicking to adjust the magnification of the image enlarging device.

The second UI 210 is provided on one side of the handle 200 in the longitudinal direction of the front face. That is, when the user holds the handle 200, it can be disposed at a portion corresponding to the thumb. Accordingly, the second UI 210 has an advantage that it can be easily used while the user holds the handle. The second UI 210 is formed in a button shape and can be applied in the form of a depressed shape so as to be depressed inward from the front surface of the handle 200. Through such a configuration, it is possible to prevent malfunction due to carelessness of the user. The second UI 210 transmits the input value of the user to the input unit 140 through the click of the button.

The second UI 210 transmits an input value to the input unit 140 through the click so that the image output through the output unit 120 can be stopped or converted in real time.

The third UI 310 is provided on one side in the longitudinal direction of the front face of the body 100a. And may be formed adjacent to the second camera unit 300. The third UI 310 may be formed in the form of a button, and may be embossed so as to protrude outward from the front surface of the body 100a. With the above-described configuration, it is possible to easily guide the button position to a user who can not confirm the button, such as a low vision person or a visually impaired person.

The third UI 310 transmits the input value to the input unit 140 through clicking the image so that the image collected by the first camera unit 110 or the second camera unit 300 can be switched.

4 to 6, the handle 200 has a bar shape which can be gripped by one hand. A first hinge coupling part 201 is formed at one end of the handle 200 and is hinged to the other longitudinal side of the body 100a so as to be hinged in a horizontal direction with respect to the body 100a. Therefore, the grip 200 is fixed in the longitudinal direction on one side in the widthwise direction of the back surface of the body 100a at the time of folding. When the knob 200 is unfolded by the rotation of the hinge, it can be deformed as follows according to the inclination with respect to the body 100a. 3, the handle 200 is adjusted in four steps. In the first stage, the handle 200 is in close contact with the lower portion of the main body 100a and functions as a pedestal as shown in FIG. 3. In the second stage, And the third step is the same angle as that of a general hand-held expander by keeping it horizontal with the main body 100a as shown in FIG. 6, which is horizontal to the main body 100a like a general magnifying glass. This is suitable for users familiar with conventional magnifying glasses. Step 4 provides the left-handed user with a comfort-free, comfortable angle to the wrist, as shown in FIG. According to the above-described structure, the handle 200 can be positioned at a position where the user does not feel uncomfortable in the hand regardless of the hand used by the user. The structure of the handle 200 as described above can be easily used when viewing the front face, left or right side of the user by adjusting the angle of the handle 200 when using the mirror function using the second camera unit 300, An image of an area that is not visible through a still image through the second UI 210 can be confirmed. In addition, there is an advantage that a visually impaired person with a narrow viewing angle can easily confirm his /

Referring to FIG. 7, the handle 200 has the following structure so that the inclination of the handle 200 with respect to the body 100a can be adjusted in a direction perpendicular to the body 100a. The knob 200 is composed of a first knob 200a and a second knob 200b. One end of the first handle 200a is hinged through the body 100a and the first hinge coupling part 201 and the other end is coupled to the one end of the second handle 200b and the second hinge coupling part 250 Lt; / RTI > Accordingly, the second handle 200b can be angularly adjusted in multiple stages with the body 100a in the vertical direction of the body 100a by the hinge rotation. The second handle 200b is pushed in the direction of the ground to keep the wrist comfortable, and the main body 100a is horizontally aligned with the ground to provide more stable image quality and ease of use . The angle between the second handle 200b and the main body 100a is in the form of three steps, the first step is horizontal as shown in FIG. 7A, the second step is a slightly inclined state as shown in FIG. , And the third step is much tilted as shown in FIG. 7C. Although it is described in the present embodiment that the angle between the second handle 200b and the main body 100a is adjusted to three stages, it is obvious that the angle may be adjusted to two or more stages.

The reason why the angle between the second handle 200b and the main body 100a can be adjusted in a multi-stage manner as described above is that in order to provide the flexibility to use preferred angles for each user because the angle used is different for each person to be. A battery (not shown) for supplying power to the image magnifying apparatus 100 may be incorporated in the handle 200. This is to allow the user to grasp the handle 200 and disperse the weight on the handle when using the handle 200 so that the image enlarging device 100 feels light and easy to grasp.

Referring to FIG. 8, the pedestal 160 of the present invention includes a first pedestal 161, a second pedestal 162, and a third pedestal 163. The first pedestal 161 is hinged to the other side in the bottom width direction of the body 100a so that the first pedestal 161 can fold and unfold. The height of the first pedestal 161 is the same as the height of the handle 200. Accordingly, the first pedestal 161 fixes the image magnifying apparatus 100 together with the grip 200 on the ground as shown in FIG. With the above-described structure, the handle 200 plays a role of a pedestal when folded on the body 100a, which is advantageous in that the structure of the pedestal can be simplified. (Fixed Step 1)

The upper end of the second pedestal 162 is hinged to one side in the lower width direction of the handle 200 so as to be folded and unfolded. The upper end of the third pedestal 163 is hinged to the other side in the lower width direction of the body 100a so as to be folded and unfolded. The height of the third pedestal 163 is equal to the sum of the height of the second pedestal 162 and the height of the handle 200. Accordingly, the second pedestal 162 and the third pedestal 163 fix the image magnifying apparatus 100 on the ground as shown in FIG. (Fixed Stage 2)

According to the above-described structure, the height of the body 100a can be adjusted in two stages when the body 100a is fixed to the ground. In the case of a conventional single-stage pedestal, when the magnification is to be lowered while being in close contact with the ground, the magnification is lowered by lifting the magnifier, which is inconvenient for a user to use. In order to compensate for this, a two-step pedestal is provided so that a high pedestal provides convenience to users who want to use the pedestal at a low magnification. Although the configuration of the pedestal 160 is described as two stages in this embodiment, it is obvious that the pedestal 160 may be configured as two or more stages.

The calculation module 170 may be installed in a circuit form inside the body 100a. The calculation module 170 is a central processing module for controlling the image sensor module, the distance sensor unit, the autofocus driver, and the image processing module.

9, the calculation module 170 includes an image acquisition module 171, a noise filter unit (not shown), an enlargement filter unit (not shown), a color filter unit (not shown), a threshold value calculation unit 172, And a binarization unit 173.

The image acquisition module 171 stores image data transmitted through the first camera unit 110 or the second camera unit 300 in a memory and generates a histogram for determining a threshold value required for the binarized image. And the threshold value is determined.

The noise filter unit removes Gaussian noise and salt & pepper noise, which are general image noise, on the image data. In addition, the noise filter unit performs the following process in order to remove the fine tremble phenomenon of the image data.

The noise filter section calculates a difference image between a block image of the image data of the (N-1) th frame and a block image of the image data of the Nth frame. And the degree of motion according to a predetermined inter-frame delay time can be measured using the calculated difference image. Accordingly, the noise filter unit binarizes the block image of the image data of the (N-1) -th frame and the image data of the N-th frame, estimates the motion vector by an XNOR operation or the like, .

Therefore, the noise filter unit maintains the image data of the (N-1) -th frame when the degree of motion is less than a predetermined value, and outputs the image data of the N-th frame when the degree of motion is greater than the predetermined value .

As described above, the noise filter unit of the present invention can remove minute tremors caused by image binarization, which will be described later, by maintaining the image data of the (N-1) -th frame when the degree of motion is less than a predetermined value .

That is, the noise filter unit of the present invention is configured such that, when the motion according to a predetermined inter-frame delay time is fine and the degree of motion is smaller than a predetermined reference value, the noise filter unit is regarded as no motion.

The enlargement filter unit enlarges the image data according to the LCD resolution of the output unit 120. The enlargement filter unit enlarges the image data through bilinear interpolation.

The color filter unit receives the user input value transmitted from the first UI 150 to the image data, and applies the brightness and the high contrast.

The threshold value calculation unit 172 extracts a maximum pixel luminance value and a minimum pixel luminance value through the luminance signal of the image data, and calculates a threshold value through the maximum pixel luminance value and the minimum pixel luminance value. The threshold value may be implemented as an average value of a maximum pixel luminance value and a minimum pixel luminance value for image data of a corresponding frame.

The threshold value calculation unit 172 may use a value obtained by applying a weight value selected and input from the user to the calculated threshold value as a threshold value for image binarization. In this case, the brightness of the binarized image can be adjusted through the weight. That is, the brightness of the binarized image can be adjusted through the background color region of the binarized image that varies according to the weight.

The binarization unit 173 generates a binarized image for the image data on the basis of the threshold value. That is, the binarization unit 173 implements the color of the corresponding pixel as a background color when the luminance value of the corresponding pixel is less than or equal to the threshold value, and when the luminance value of the corresponding pixel is greater than or equal to the threshold value, .

The binarization unit 173 uses the background color and the color set according to the input value selected by the user through the first UI 150 as a color for image binarization. For example, the background color and the text color set according to the user's selection input may be black and green, respectively. In this case, the binarization unit 173 may convert the image data into a binary image in which the background color and the character color are black and green, respectively, based on the threshold value.

The output unit 120 outputs the finally determined image data through the binarization unit 173. Therefore, the output unit 120 is exposed on the other side of the body 100a, and the output unit 120 may be a conventional LCD panel.

The present invention according to the present invention provides a clean and bright binary image through the output unit 120 to eliminate blurring or blurring due to macular degeneration and eye shaking, The concentration and cognition of the user on the subject or the visual medium can be improved.

In addition, it is possible to enlarge a book, a newspaper, a photograph, and the like even when moving, and the user can change the color of the binarized image according to his or her own preference, so that it can be used as a tool for learning, rehabilitation, have. In addition to the proximity of the subject, the remote subject can be clearly seen through the auto-focus function without additional operation.

The technical idea should not be construed as being limited to the above-described embodiment of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, such modifications and changes are within the scope of protection of the present invention as long as it is obvious to those skilled in the art.

100: image enlarging device 100a: body
110: first camera section
120: Output section
130: LED lighting part
140: button input section
150: First UI
161: first pedestal 220: second pedestal
162: Third base
170: Operation module 171: Image acquisition module
172: threshold value calculation unit 173: binarization unit
200: handle 200a: first handle
200b: second handle 201: first hinge coupling part
210: second UI 250: second hinge coupling part
300: second camera unit 310: third UI

Claims (5)

Body;
A first camera unit installed on a rear surface of the body for acquiring a subject-side image;
A second camera unit installed on a front surface of the body for acquiring a user's image;
An output unit installed on a front surface of the body for receiving and outputting an image of the first camera unit or an image of the second camera unit;
A handle having a front end hinged to a rear surface of the body so as to be adjustable in a horizontal direction of the body;
A second UI provided on a front surface of one end of the handle to receive a user input; And
A third UI provided adjacent to the second camera unit to receive a user input; / RTI >
Wherein the second UI is disposed in close proximity to the thumb of the user and is provided in a depressed shape on the handle to prevent malfunction due to carelessness of the user and the third UI is spaced apart from the user's hand, Wherein the body of the portable image enlarging device has a mirror function.
The method according to claim 1,
The portable image enlarging device includes:
A first UI provided on the other side in the longitudinal direction of the body for receiving user input; / RTI >
Wherein the first UI is inclined toward the front of the body and toward the handle of a predetermined angle.
delete delete The method according to claim 1,
Wherein the image of the second camera unit, which is output to the output unit,
Wherein the controller is capable of switching to a pause image or a real time image through a calculation module provided in the body, and the pause image can be enlarged or reduced.

Images