KR101495077B1 - Apparatus and method for digital picturing image - Google Patents

Abstract

The present invention relates to a digital image processing apparatus and a control method thereof. More particularly, the present invention relates to a digital image processing apparatus and method for controlling a digital image processing apparatus and a control method thereof, A digital image processing apparatus and a control method thereof.

The present invention provides a digital image processing apparatus comprising a digital signal processing unit for generating a barcode image file by rotating or trimming a photographed barcode image.

Description

[0001] The present invention relates to a digital image processing apparatus and a control method thereof,

The present invention relates to a digital image processing apparatus and a control method thereof. More particularly, the present invention relates to a digital image processing apparatus and method for controlling a digital image processing apparatus and a control method thereof, A digital image processing apparatus and a control method thereof.

Typically, the digital image processing apparatus includes all devices that process images of a digital camera, a PDA (personal digital assistant), a phone camera, a PC camera, or the like, or use motion recognition sensors. Such a digital image processing apparatus receives a desired image through an image pickup device, displays the input image on an image display device, displays the image on an image display device, stores the image as an image file by user's selection, and prints the stored image file.

On the other hand, conventionally, image coupons for taking a part of a product or advertisement with a digital image processing device and giving a discount or a prize to the user have been utilized. In other words, when the user takes a specific part of the product or a specific part of the advertisement of the product and takes it to the shop, the shop confirms the photographed image and gives a discounted benefit to the person who has photographed it Or give a prize.

However, the conventional video coupon has the following problems. That is, in the case of the conventional image coupon, the employee of the shop confirms the image taken by the user and gives the corresponding benefit. Therefore, all the employees of all shops should be aware of the benefits of the specific video coupon. If they do not know it, whenever the user gets the video coupon, the employee searches the video coupon list and obtains the corresponding benefits There is a problem that it must be found and provided.

The present invention provides a digital image processing apparatus and a control method thereof for rotating or trimming a bar code described in a product to regenerate the image file as a photo file suitable for a display screen of the digital image processing apparatus .

The present invention provides a digital image processing apparatus comprising a digital signal processing unit for generating a barcode image file by rotating or trimming a photographed barcode image.

In the present invention, the digital signal processing unit may generate a full-size barcode image file suitable for a display screen of the digital image processing apparatus.

In the present invention, the generated barcode image file may be readable by a barcode reader.

In the present invention, the digital signal processing unit may include a rotation unit that detects the rotation angle of the photographed barcode image with respect to the digital image processing apparatus and rotates the barcode image by the rotation angle.

In the present invention, the digital signal processing unit may include a trimming unit for trimming a barcode area of the photographed image.

In the present invention, the trimming and the rotation can be performed simultaneously.

In the present invention, the digital signal processing unit may further include a barcode recognition unit for determining whether the photographed image is a barcode.

In the present invention, the barcode recognition unit may recognize a barcode area through edge detection of the photographed image.

According to another aspect of the present invention, there is provided a control method of a digital image processing apparatus, comprising: inputting a shutter-release signal; Determining whether the photographed image is a barcode; Rotating or trimming the photographed barcode image; And generating and storing the rotated or trimmed bar code image file.

In the present invention, the step of determining whether the photographed image is a bar code may be performed by edge detection.

In the present invention, the step of rotating or trimming the photographed barcode image may include the steps of: generating a full-size barcode image file corresponding to a display screen of the digital image processing apparatus, The image can be rotated or trimmed.

The step of rotating or trimming the photographed barcode image may include detecting a rotation angle of the photographed barcode image with respect to the digital image processing apparatus and rotating the barcode image by the rotation angle Step < / RTI >

In the present invention, the step of rotating or trimming the photographed barcode image may include trimming the barcode area of the photographed image.

According to the present invention as described above, it is possible to obtain the effect of rotating or trimming the bar code when photographing the bar code described in the product, and regenerating the image file as a photo file suitable for the display screen of the digital image processing apparatus.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the front and top contours of the digital image processing apparatus according to the present invention.

The shutter-release button 101 is opened and closed to expose the CCD or film to light for a predetermined period of time, interlocked with an iris (not shown), and appropriately exposes the subject to record an image on the CCD.

The shutter-release button 101 generates the first and second image pickup signals by the photographer input. When the first shutter-release signal as the half-shutter signal is input, the digital image processing apparatus focuses and adjusts the amount of light. At this time, the display unit 113 is turned on green. When the first shutter-release signal is focused and the amount of light is adjusted, a second shutter-release signal as a full shutter signal is input to capture an image.

The power button 103 is input for supplying power to the digital image processing apparatus and operating it.

The flash 105 illuminates bright light instantly when shooting in a dark place. The flash mode includes automatic flash, forced flash, prohibited flash, red-eye reduction, and slow synchro flash.

The auxiliary light 107 supplies light to the subject so that the digital image processing apparatus can automatically and quickly catch the focus when the light amount is insufficient or at night.

The lens unit 109 receives light from an external light source and processes the image.

FIG. 2 is a rear view showing the rear external appearance of the digital image processing apparatus shown in FIG. 1. The wide angle-zoom button 111w, the telephoto-zoom button 111t, the display unit 113, Input buttons B1 to B14 (hereinafter referred to as buttons B1 to B14).

The wide-angle zoom button 111w or the tele-zoom button 111t widens the angle of view or narrows the angle of view depending on the input, in particular, when changing the size of the selected exposure area. When the wide angle-zoom button 111w is input, the size of the selected exposure area is reduced, and when the telephoto-zoom button 111t is input, the size of the selected exposure area is increased.

The buttons B1 to B14 are provided in the rows and columns of the display unit 113. [ The buttons B1 to B14 provided in the row and column of the display unit 113 are provided with a touch sensor (not shown) or a contact type switch (not shown).

That is, the touch sensors are provided on the buttons B1 to B14 to move up / down / left / right while touching the buttons B1 to B7 of the row or the buttons B8 to B14 of the column, It is possible to select any value (e.g., color or brightness) of the menu items, or to activate the submenu icon included in the main menu icon.

In addition, the button frames (B1 to B14) are provided with contact switches so that the main menu icon and the sub menu icon can be directly selected to execute the corresponding function. The touch sensor requires a relatively weak touch compared to the contact switch input, but the contact switch input requires a relatively strong touch compared to the touch sensor input.

FIG. 3 is a block diagram showing the configuration of the digital image processing apparatus shown in FIGS. 1 and 2. The display unit 113, the user input unit 121, the image pickup unit 123, the image processing unit 125, 127 and a digital signal processing unit 129. [

The user input unit 121 includes a shutter-release button 101 that is opened and closed to expose a CCD or a film to light for a predetermined period of time, a power button 103 that inputs power to supply power, A wide angle-zoom button 111w and a telephoto-zoom button 111t for narrowing the angle of view and a touch sensor or a contact switch provided in the horizontal and vertical columns around the display unit 113 for setting characters or menus Buttons There are button frames (B1 to B14).

The image pickup section 123 includes a shutter, a lens section, a diaphragm, a charge coupled device (CCD), and an analog-to-digital converter (ADC), not shown. The shutter is a mechanism that adjusts the amount of light that is exposed with the iris. The lens unit receives light from an external light source and processes the image. At this time, the diaphragm adjusts the amount (amount of light) of the incident light according to the degree of opening and closing. The opening / closing degree of the diaphragm is controlled by the digital signal processor 129.

The CCD accumulates the amount of light input through the lens unit and outputs the image captured by the lens unit according to the accumulated light amount in accordance with the vertical synchronization signal. Image acquisition of a digital image processing apparatus is performed by a CCD which converts light reflected from a subject into an electrical signal. In order to obtain a color image using a CCD, a color filter is required, and a filter (not shown) called a color filter array (CFA) is employed in most cases. CFA has a regularly arranged structure that passes only light that represents one color per pixel, and it has various forms according to the arrangement structure. The ADC converts the analog video signal output from the CCD into a digital signal.

The image processing unit 125 processes the digitally converted image signal so that it can be displayed. The devices used in the CCD and CFA filters are sensitive to temperature changes and generate dark currents depending on the temperature changes, which include undesired black levels in the video signal. The image processor 125 removes the black level generated by the dark current as described above.

The image processing unit 125 also performs gamma correction. Because human vision responds nonlinearly to brightness in accordance with Weber's law, when the bit depth is limited, the brightness of the light is recorded linearly, Lt; / RTI > Therefore, in order to show the maximum picture quality at a given bit depth, it is necessary to encode using a non-linear function. As described above, encoding information in accordance with nonlinearity of human vision is referred to as gamma correction. The gamma correction of the image processing unit 125 performs gamma correction on the image signal input by the gamma curve. For example, the input brightness level of the 12-bit image signal is corrected to an 8-bit brightness level and output.

The image processing unit 125 performs CFA interpolation for interpolating a Bayer pattern embodied with RGAG lines and GBGB lines of gamma-corrected predetermined data into RGB lines. The CFA interpolation of the image processing unit 125 first reconstructs the G channel in the pixels having only the R or B channel values, then fills empty values in the order of the B channel, the R channel, or the R channel and the B channel, , B Restores three channels.

The image processing unit 125 converts the interpolated RGB signals into YUV signals, edge-compensates the Y signals by filtering the Y signals by a high-pass filter, and calculates the color values of the U and V signals using a standard color coordinate system Corrects the color correction, and removes these noises.

The image processing unit 125 compresses and processes the Y, U, and V signals from which noise has been removed to generate an Exif file, and the generated Exif file is displayed on the display unit 113 and stored in the storage unit 127 . All the operations of the image processing unit 125 operate under the control of the digital signal processing unit 129. [

When a barcode attached to a product is photographed, the digital signal processor 129 processes the photographed image to generate a barcode image.

In the past, image coupons were used to capture a part of a product or an advertisement with a digital image processing device and give a discount or a prize to the user. In other words, when the user takes a specific part of the product or a specific part of the advertisement of the product and takes it to the shop, the shop confirms the photographed image and gives a discounted benefit to the person who has photographed it Or give a prize. However, in the case of such a conventional image coupon, the employee of the shop individually confirms the image taken by the user and gives the corresponding benefit. Therefore, all the employees of all shops should be aware of the benefits of the specific video coupon. If they do not know it, whenever the user gets the video coupon, the employee searches the video coupon list and obtains the corresponding benefits There is a problem that it must be found and provided.

Accordingly, in the present invention, when a user provides an image coupon in the form of a bar code to a product or an advertisement, and the user takes a picture coupon in the form of a bar code, the digital image processing device rotates or trims the product coupon, And regenerating the image file as a full-size photo file suitable for the display screen of the digital image processing apparatus. Accordingly, it is not necessary for the employees of the shop to know the contents of all the image coupons, and if the image coupon of the barcode type taken by the user is read through the barcode reader, the benefit corresponding to the image coupon can be searched. Therefore, the use of the image coupon is activated, and the time and cost for knowing the contents of the image coupon can be reduced.

The digital signal processing unit 129 for controlling the recognition and generation of the barcode image includes a barcode recognition unit 129-1, a barcode image generation unit 129-2, and a control unit 129-3. The barcode image generation unit 129-2 includes a rotation unit 129-2a and a trimming unit 129-2b.

The barcode recognition unit 129-1 determines whether the photographed image is a barcode.

A bar code is a code that combines letters and numbers with black and white bar symbols to make it easy for the computer to read and input. It is automatically read by the optical mark reading device and used for the kind of the product, the book classification, the identification certificate.

 In detail, a bar code is a combination of letters and numbers in black and white bar symbols, which are used by computers for easy reading and data entry. This is automatically read and input by the optical mark reader. It represents the type of product that conforms to the universal product code (UPC), or is used in the point of sale system (POS) in supermarkets and the like. Prices are displayed separately and are also used for book classification, identification documents, and so on.

There are several coding methods such as universal product code (UPC), CODABAR, MSI, code 39, Korean common product code (KAN) and Japanese common product code (JAN). Generally used barcodes can be reduced and enlarged to 0.8 ~ 2 times the standard size of 3.73cm width and 2.7cm length.

FIG. 4 shows an example of a bar code to which the Korean common product code (KAN) is applied.

4, the bar code 200 includes an upper left guard bar 202, a binary code bar 204, a check digit bar 206, a right guard bar 208, 210 and the lower 13 digits (country code 212, manufacturer code 214, product code 216 and verification code 218). All of the above-mentioned components must be equipped to achieve a perfect one barcode.

Accordingly, when the image is captured, the barcode recognition unit 129-1 determines whether the captured image is a barcode by a color-based or edge-based method. The contents of the barcode detection are well known in bar code readers and the like, and therefore, a detailed description thereof will be omitted in the present invention.

The barcode image generation unit 129-2 includes a rotation unit 129-2a and a trimming unit 129-2b.

The rotation unit 129-2a detects the rotation angle of the barcode image with respect to the digital image processing apparatus 100 and rotates the barcode image by the rotation angle to generate a new barcode image file.

5A shows that the barcode image is inclined by the angle? With respect to the digital image processing apparatus. FIG. 5B shows the barcode image rotated by the rotation unit 129-2a by the rotation unit 129-2a. A new barcode image file generated by rotating and correcting the barcode image by &thetas; degrees is displayed.

That is, the rotation unit 129-2a detects whether the photographed barcode image is rotated at a predetermined angle or more with respect to the digital image processing apparatus, and when the photographed barcode image is rotated by a predetermined angle or more, . Here, whether or not the photographed barcode image is rotated at a predetermined angle or more with respect to the digital image processing apparatus can be determined, for example, whether or not the bars constituting the barcode are parallel to the height direction (y direction in FIG. 5) And a method of detecting whether or not the signal is detected. At this time, when the photographed barcode image is rotated by 8 degrees, for example, with respect to the digital image processing apparatus, the rotation unit 129-2a converts the tilted 8 ° image into a 0 ° image in a predetermined direction Clockwise direction) so as to store the rotated file.

The trimming unit 129-2b extracts only the barcode area from the photographed image and trimming it to generate a new barcode image file.

In detail, the trimming function is mainly used when only a part of the image is necessary or when a part of the image is enlarged and stored separately by providing a function of storing a part of the image as another image file.

FIG. 6 is a diagram of a barcode image trimmed with a frame. FIG. 6A is a view showing a barcode area portion as a frame in a photographed image, and FIG. 6B is a diagram of a barcode image trimmed with a frame in FIG. 6A.

That is, the trimming unit 129-2b detects the barcode area through edge detection or the like, and trims the detected barcode area to display a full size full image on the display unit 113 of the digital image processing apparatus 100 -size) Generate a barcode image file.

On the other hand, as shown in FIG. 7, the rotation and the trimming can be performed simultaneously. The barcode area is trimmed by the angle of? Degrees with respect to the digital image processing apparatus and the barcode area is trimmed so that the full size (full size) of the display unit 113 of the digital image processing apparatus 100 -size) It is also possible to generate a barcode image file.

According to the present invention as described above, it is possible to obtain the effect of rotating or trimming the bar code when photographing the bar code described in the product, and regenerating the image file as a photo file suitable for the display screen of the digital image processing apparatus.

Next, a digital image processing method according to the present invention will be described in detail with reference to FIG. The image processing method according to the present invention can be performed in the image processing apparatus as shown in FIG. 2. According to the embodiment, the main algorithm of the operation method is a digital signal processing unit 129 ). ≪ / RTI >

8, a control method of a digital image processing apparatus according to the present invention includes steps of inputting a shutter-release signal from a user (step S110), determining whether the photographed image is a bar code (step S120) (S130) of rotating and / or trimming the photographed barcode image (S130) and generating and storing the rotated and / or trimmed barcode image file (S140).

First, when a shutter release signal is input from the user (step S110), the barcode recognition unit 129-1 determines whether the photographed image is a barcode (step S120). In detail, a bar code is a combination of letters and numbers in black and white bar symbols, which are used by computers for easy reading and data entry. This is automatically read and input by the optical mark reader. It represents the type of product that conforms to the universal product code (UPC), or is used in the point of sale system (POS) in supermarkets and the like. Prices are displayed separately and are also used for book classification, identification documents, and so on. Accordingly, when the image is captured, the barcode recognition unit 129-1 determines whether the captured image is a barcode by a color-based or edge-based method. The contents of the barcode detection are well known in bar code readers and the like, and therefore, a detailed description thereof will be omitted in the present invention.

Here, when the digital photographing apparatus 100 can set the bar code photographing mode, it may not separately judge whether the photographed image is a bar code when the bar code photographing mode is set.

If the captured image is not a bar code, the digital signal processing unit 129 controls the image processing unit 125 so that the captured image is a barcode, The image is generated as a JPEG image file and displayed on the display unit 113 and stored in the storage unit 127 (step S150).

Next, the barcode image generation unit 129-2 rotates and / or trims the photographed barcode image (step S130).

In detail, the rotation unit 129-2a detects the rotation angle of the barcode image with respect to the digital image processing apparatus 100, rotates the barcode image by the rotation angle, and generates a new barcode image file. That is, the rotation unit 129-2a detects whether the photographed barcode image is rotated at a predetermined angle or more with respect to the digital image processing apparatus, and when the photographed barcode image is rotated by a predetermined angle or more, . Here, whether or not the photographed barcode image is rotated at a predetermined angle or more with respect to the digital image processing apparatus may be determined by, for example, a method of detecting whether or not a plurality of bars constituting the barcode are parallel to the height direction of the digital image processing apparatus It can be judged. At this time, if the photographed barcode image is rotated by 8 degrees, for example, with respect to the digital image processing apparatus, the rotation unit 129-2a controls the inclined 8 ° image to rotate in a predetermined direction to 0 ° image , And stores the rotated file.

Also, the trimming unit 129-2b extracts only the barcode area from the photographed image and trimming it to generate a new barcode image file. The trimming function is mainly used when a part of the image is required or a part of the image is enlarged and stored separately by providing a function of storing part of the image as another image file. That is, the trimming unit 129-2b detects the barcode area through edge detection or the like, and trims the detected barcode area to display a full size full image on the display unit 113 of the digital image processing apparatus 100 -size) Generate a barcode image file.

Further, the rotation and the trimming can be performed simultaneously. That is, the barcode image that is inclined by &thetas; degrees with respect to the digital image processing apparatus is rotationally corrected by the angle &thetas; while the barcode area portion is trimmed so that the full size it is also possible to generate a full-size barcode image file.

 Finally, the digital signal processing unit 129 controls the image processing unit 125 to generate a JPEG image file of the barcode image photographed in the above manner, displays it on the display unit 113, and stores it in the storage unit 127 (step S140) .

According to the present invention as described above, it is possible to obtain the effect of rotating or trimming the bar code when photographing the bar code described in the product, and regenerating the image file as a photo file suitable for the display screen of the digital image processing apparatus.

The present invention has been described with reference to the preferred embodiments. 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. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

1 is a perspective view showing the front and top contours of the digital image processing apparatus according to the present invention.

FIG. 2 is a rear view showing the rear external appearance of the digital image processing apparatus shown in FIG. 1. FIG.

FIG. 3 is a block diagram showing a configuration of the digital image processing apparatus shown in FIG. 1 and FIG. 2. FIG.

4 is a diagram illustrating an example of a bar code to which the Korean common product code (KAN) is applied.

5 is a view showing the rotation angle [theta] of the barcode image.

Fig. 6 is a diagram of a barcode image displayed in a frame.

Fig. 7 is a diagram showing that rotation and trimming of the barcode image are performed simultaneously.

8 is a flowchart showing a control method of the digital image processing apparatus according to the present invention.

Description of the Related Art

100: digital image processing apparatus 121: user input unit

123: image pickup unit 125: image processing unit

127: storage unit 129: digital signal processor

129-1: Barcode recognition unit 129-2: Barcode image generation unit

129-2a: rotating part 129-2b: trimming part

Claims (13)

A digital image processing apparatus comprising: And a digital signal processor for generating a barcode image file by rotating or trimming the photographed barcode image, Wherein the digital signal processor comprises: And a rotation unit for detecting a rotation angle of the photographed barcode image with respect to the digital image processing apparatus and rotating the barcode image by the rotation angle, Wherein the barcode image file is readable by a barcode reader. The method according to claim 1, Wherein the digital signal processing unit generates a full-size barcode image file corresponding to a display screen of the digital image processing apparatus. delete delete The method according to claim 1, Wherein the digital signal processor comprises: And a trimming unit for trimming the barcode area of the photographed image. The method according to claim 1, Wherein the trimming and the rotation are simultaneously performed. The method according to claim 1, Wherein the digital signal processor comprises: And a barcode recognition unit for determining whether the photographed image is a barcode. 8. The method of claim 7, The barcode recognizing unit, And recognizes the barcode area through edge detection of the photographed image. A control method of a digital image processing apparatus, A step of inputting a shutter-release signal; Determining whether the photographed image is a barcode; Rotating or trimming the photographed barcode image; And Generating and storing the rotated or trimmed barcode image file, The step of rotating or trimming the photographed barcode image comprises: Detecting a rotation angle of the photographed barcode image with respect to the digital image processing apparatus and rotating the barcode image by the rotation angle, Wherein the generated barcode image file is readable by a barcode reader. 10. The method of claim 9, Wherein the step of determining whether the photographed image is a bar code comprises: Wherein the edge detection is performed by the edge detection. 10. The method of claim 9, The step of rotating or trimming the photographed barcode image comprises: And rotating or trimming the photographed barcode image to generate a full-size barcode image file corresponding to a display screen of the digital image processing apparatus. delete 10. The method of claim 9, The step of rotating or trimming the photographed barcode image comprises: And trimming the barcode area of the photographed image.

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