KR101156395B1 - A method and apparatus to express an image object - Google Patents

Abstract

According to an aspect of the present invention, an image object display apparatus includes a receiver configured to receive an actual size value of a transmitted image object, a storage unit storing standard length units and converted values of pixel sizes of an image display apparatus provided at a receiver side, And a data converter for converting the image object displayed on the image into a size specified by the sender using a two-dimensional size value of the image object obtained from the image signal and a size ratio of pixels per unit length stored in the storage unit.

In addition, the image object display method according to the spirit of the present invention is to measure the size of the image object in the data to be transmitted to insert the data, the size value of the image object obtained from the received image signal and the unit length stored in the storage unit And a data conversion step of converting the image object displayed on the image to the size transmitted by the sender using the size ratio of the pixel.

According to the present invention, a sender of an image can display an image object in an image on a digital image display device at the receiver side in a desired size, so that the actual size of an object separated from another space that cannot be displayed by a conventional method is displayed. There is an effect that the user can recognize through the display device.

Video display, pixel

Description

Image display device and method {A method and apparatus to express an image object}

1 is a view showing a method of representing an image object in a conventional video display device.

2 is a view illustrating a method of representing an image object in an image display apparatus of the present invention.

3 is a diagram illustrating a configuration of pixels and margins constituting an image.

4 is a diagram illustrating a standard length of an image of an object to be transmitted from a sender side to a receiver side and a resolution in a storage unit of a receiver.

FIG. 5 is a diagram for describing an image display method when the size of an image object exceeds the size of an image display device. FIG.

6 is a flowchart illustrating a method of displaying an image object according to the present invention.

<Description of the symbols for the main parts of the drawings>

10, 100: Sender side 11, 101: Original video

12, 21, 102, 114: video object 20, 110: receiver side

22, 111: Overscanned image 25, 112: Outputted image

26, 113: Output image object 120: X_rgb                 

121: X_gab 122: Y_rgb

123: Y_gab 131: Width of the video object

132: length of the video object 136: first recipient

137: second recipient 150: reduction ratio

The present invention relates to an image object display apparatus and a method which enables an image sender to display an object in an image on a digital image display apparatus at a receiver side in a desired size.

In more detail, the present invention can be viewed by the user in the actual size of the goods introduced in the cyber space, such as an Internet shopping mall, it can be usefully used when converting the weight to the actual size.

Recently, with the development of large image display devices such as PDPs, LCDs, and projectors, various home large image display devices have been widely distributed and marketed. In general, large image display apparatuses produce content and unilaterally distribute the content, and in detail, receive a video signal transmitted through broadcasting, and then overscan appropriately to display an image on an image. At this time, in the case of digital television, the received video signal is converted into a digital value in pixel units and transmitted to the video display device.

However, even if a producer produces and transmits an image signal in accordance with the actual size of the objects appearing in the content, the size of the receiver's image display device and the processing of the image are not displayed on the image as the actual size of the objects included in the image. impossible.

1 is a view showing a method of representing an image object in a conventional video display device,

Referring to FIG. 1, when the sender side 10 transmits the original image 11 and the image object 12 to the receiver side 20, the receiver side 20 receives the entire original image 11 to display the image display apparatus. Rather than outputting the data, the part of the original image is overscanned and output to the video display device. For example, when the high definition television (HD) format signal is input, only 93.75% of the original image is overscanned. In addition, such an image outputs an image having a difference from the size of the original image according to the size or the number of pixels of the image display apparatus on the receiver side.

In more detail, the size difference of the image occurs because a screen truncation occurs due to the overscan occurring at the receiving side, and the image display apparatus at the receiver side displaying the overscanned image is different for each receiver.

As a result, the size of the real thing in the image transmitted by the sender is not known to the receiver, and the above problem is a great inconvenience for the consumer who is shopping using the Internet or TV. In addition, there is a problem that smooth information transmission is not achieved when communicating using image signals in an engineering or scientific field where metrology is particularly important.

An object of the present invention is to propose an apparatus and method for displaying an image object in which a sender of an image produces, transmits, and receives an image signal including an actual size value of objects, and displays the image signal at the actual size of the object.

According to an aspect of the present invention, an image object display apparatus according to an aspect of the present invention includes a receiver for receiving an actual size value of a transmitted image object, a standard length unit, and a converted value of pixel size of an image display apparatus provided at a receiver side. A storage unit configured to convert the image object displayed on the image into a size specified by the sender using a two-dimensional size value of the image object obtained from the received image signal and a size ratio of pixels per unit length stored in the storage unit. It is characterized by including.

In addition, the image object display method according to the spirit of the present invention is to measure the size of the image object in the data to be transmitted to insert the data, the size value of the image object obtained from the received image signal and the unit length stored in the storage unit And a data conversion step of converting the image object displayed on the image to the size transmitted by the sender using the size ratio of the pixel.

According to the present invention, a sender of an image can display an image object in an image on a digital image display device at the receiver side in a desired size, so that the actual size of an object separated from another space that cannot be displayed by a conventional method is displayed. There is an effect that the user can recognize through the display device.                     

In addition, by storing the metrology in the memory of the video display device, the receiver can easily grasp the size and dimensions of the actual image, and by using this function, products introduced in a space such as home shopping or an internet shopping mall can be viewed at actual size. There is an effect that can be applied.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments to be implemented below, those skilled in the art to which the spirit of the present invention belongs to other embodiments within the same scope of the present invention, the addition of components, It can be easily suggested by changing, deleting, adding, etc.

2 is a view showing a method of expressing an image object in an image display apparatus of the present invention,

Referring to FIG. 2, when the sender side 100 transmits the original image 101 and the image object 102 to the receiver side 110, the receiver side 110 receives an entire image of the original image 101 and displays the image. Instead of outputting to the apparatus, a part of the original image is overscanned and output to the image display apparatus. In this case, according to the related art, an image having a difference from the original image is output according to the size of the receiver or the number of pixels.

However, in the present invention, the image data of the image object 102 with the image signal is transmitted separately to the receiving side 110, the receiving side 110 is an image display device provided on the receiving side based on the data The number of pixels is taken into consideration and then output to the video display device.

Accordingly, the size of the image object 102 output to the image display device of the receiving side 110 is the same as that of the transmitting side 100, and the receiving side 110 can accurately recognize the size of the image object 102. have.

3 is a diagram illustrating a configuration of pixels and margins constituting an image.

The pixel is called 'pixel' in English, and the 'pixel' is short for 'picture element'. Magnifying glass of newspapers and magazines (網 版) pictures are magnified at regular intervals, and as the points are large and small, the outlines and jokes of the pictures are expressed. This point is the minimum unit for constructing the picture, and smaller ones (exactly smaller than the spacing of dark spots in the halftone picture) cannot be represented. The more these points, the more clearly the image can be expressed. In other words, the resolution is high.

Such minimum units are referred to as pixels in television or photo transmission. Reproduction of a screen such as a television or a photograph necessarily includes the minimum unit of the screen, and in a photograph, the size of silver particles on a film or photo paper and the thickness of an electron beam such as a CRT in a television become the unit of the pixel. The more pixels there are in the entire screen, the more precise and detailed reproduction screen can be obtained.

As shown in FIG. 4, the size of the pixel and the margin are represented by the lengths of the X_rgb 120, the Y_rgb 122, the X_gab 121, and the Y_gab 123. More specifically, the X_rgb 120 corresponding to the horizontal length of the pixel, the X_gab 121 which is the horizontal distance value between the pixel and the pixel, the Y_rgb 122 corresponding to the vertical length of the pixel, and the Y_gab (vertical distance value between the pixel and the pixel) 123 is defined as a standard length value according to the manufacturing standard of the video display device. Therefore, the resolution of one pixel in the image means the sum of the X_rgb 120 and the X_gab 121 in the horizontal direction and the sum of the Y_rgb 122 and the Y_gab 123 in the vertical direction. For example, in the case of a PDP having no X_gab 121 in the horizontal direction, the horizontal resolution is X_rgb 120, and the vertical resolution is the sum of Y_rgb 122 and Y_gab 123.

When the receiver receives an image signal transmitted by the sender and outputs the image signal on the image display apparatus, the pixel is multiplied by a standard unit value stored in the storage unit and output to the image display apparatus.

4 is a diagram illustrating a standard length of an image of an object to be transmitted from a sender side to a receiver side and a resolution in a storage unit of a receiver.

Referring to FIG. 4, the transmitter 100 transmits an object having a predetermined size to an image signal and transmits the image signal to the receiver 110. At this time, the size of the object to be transmitted by the sender 100 is divided into the X-axis 131 and the Y-axis 132 to transmit the length to the receiver.

The length data transmitted as described above is used at the receiver side 110 to express the original size of the object on the image display apparatus. In the image display apparatus of the receiver side 110, since the size and number of pixels are different for each receiver, the actual size of the object may be represented on the image display apparatus through a storage unit provided at each receiver side.

Meanwhile, the size of the image transmitted by the image sender 100 is changed to a standard length using pixels, and the resolution of the image expressed by the standard length value can be converted into various standard lengths at the image receiver side 110. Stored in storage,

In more detail, the object 102 of the target image to be sent from the sender side is defined as a standard length value of X 131 in the horizontal direction and Y 132 in the vertical direction and inserted in the transmission data as shown in FIG. 3. .

 Next, the standard length data X 131 and Y 132 of the target image object 102 inserted into the transmission data are converted into pixel values per standard length unit stored in the storage unit on the receiver side, and sent to the video display device for output. do. For example, when the value X 131 is received as the length data of the image object in the horizontal direction, the image display device is expressed as the number of pixels divided by the length X divided by X_pixel.

The size and number of the pixels are different depending on the image display device on the individual receiver side. For this reason, a storage unit for storing different length converted data is provided in the image display apparatus on each receiver side.

For example, one pixel is fixed to a predetermined size on the image display device provided at the first receiver side 136 of FIG. 4. The fixed value is expressed as a, b, c, and d, and the length is multiplied by the standard unit 1 representing the unit. The standard unit is different for each image display apparatus of an individual receiver, and if SI units are used, mm or cm may be used. Of course, such a standard unit is different for each receiver, and in FIG. 4, the standard unit is divided into a standard unit 1, a standard unit 2, and the like.

On the other hand, if the standard unit is set to a predetermined unit and the storage unit in the image display apparatuses of all receivers is unified based on the standard unit, only the a, b, c and d values are adjusted to display the original size of the object on the image display apparatus. can do.

5 is a method of displaying an image when the size of the image object exceeds the size of the image display device.

Referring to FIG. 5, when the size of an object to be displayed on the image display device is larger than the image display device at the receiver side, that is, when the converted value of the object exceeds the number of effective pixels of the image display device, the original image is displayed. The object 102 is reduced in size by a predetermined ratio and displayed on the image display device 160 at the receiver side. Although the above method is a conventional method of displaying an image on the receiver side, in the present invention, the predetermined reduction ratio 150 is expressed on a part of the image display apparatus so that the receiver can predict the degree of reduction of the image object. have. Based on these predictions, you can buy goods or make accurate measurements of length. The predetermined ratio is flexible according to the size of the object or the size of the image display device, and can be reduced to a predetermined ratio desired by the receiver.

Furthermore, even if the original image object 102 can be implemented in actual size on the image display device 160 on the receiver side 110, the receiver enlarges or reduces the image size on the image display device 160 by a predetermined ratio. To see things. Such a function can be used when a small object needs to be enlarged and viewed or when a part of the object needs to be viewed in detail.

In addition, in the case of demanding accurate display such as metrological display, the pixel is composed of three RGB bars. Therefore, X_rgb (120) and Y_rgb (122) are divided by 3, and the unit value is described above. This method can be used to obtain images with 3 times the resolution.

6 is a flowchart illustrating a method of displaying an image object according to the present invention.

6, the configuration and function of the present invention described above are combined. The sender 100 of the image first measures the length value of the object object 102 represented by the image and inserts the value into the data to be transmitted. In order to calculate the length value at the receiver side, a portion where an image such as X_rgb (120) and a Y_rgb (122) is actually expressed and a margin portion such as X_gab (121) and Y_gab (123) are included in the production standard of the image display apparatus. Insert it into memory.

Thereafter, the length data is transmitted to the receiver 110, and the receiver receives the video signal through the receiver.

The receiver 110 receiving the data extracts the length data of the target object image and restores the image. In more detail, the receiver 110 converts the received length data into pixel units of an image display device provided at the receiver side. At this time, the pixel value per standard length unit stored in the storage unit provided on the receiver side 110 is used. That is, an image having the same size as the first image sent by the image sender may be output using the memory stored in the storage unit.

The storage unit also stores the video signal so that the received video signal can be converted into various standard lengths. That is, the standard length of the received video signal may be restored to the original size by reconstructing the transmitted video signal by interacting with the storage unit provided at the receiver side 110 and storing the video signal.

On the other hand, when the received video signal can be restored to its original size before transmission to the video display device on the receiver side, the video image device 160 displays the image of the object matching the standard length data. It is displayed at a fixed ratio in the image.

As described above, according to the present invention, the sender of an image can display an image object in the image in a desired size on a digital image display device at the receiver side, so that the actual object of an object separated from another space that cannot be displayed by a conventional method can be displayed. The size can be recognized by the user through the image display device.

In addition, by defining the resolution for each metrological type in the memory of the image display device itself, there is an effect that can be used as an actual measurement device and learning effect for users unfamiliar with the conventional metrological type.

In addition, there is an effect that can be applied to view the product introduced in the cyber space, such as Internet shopping mall in real size.

Claims (6)

In a video display device for receiving and displaying a video signal, A receiver configured to receive an image signal including size data of an image object; A storage unit to store resolution information of the image display device; And Overscan a portion of the image according to the received image signal, and use the size data extracted from the image signal and the resolution information stored in the storage unit to determine the size of the image object among the overscanned images. And a data converter converting the video signal to a size specified by the sender of the video signal. The method of claim 1, And reducing the original image object by a predetermined ratio when the actual size value of the received image object exceeds the number of effective pixels of the image display apparatus. The method of claim 1, And a function for changing the actual size of the received image object by increasing or decreasing the predetermined ratio by a predetermined ratio. The method of claim 2 or 3, And a function of displaying an enlargement or reduction ratio of the image object on a portion of the image display device. In the method for receiving a video signal in the video display device to display a video object, Receiving an image signal including size data of the image object; Overscanning a portion of an image according to the received image signal; Converting the size of the image object among the overscanned images into a size designated by the sender of the image signal using the size data extracted from the image signal and the resolution information stored in the storage unit; And And displaying the image object according to the converted size. The method of claim 5, wherein the size conversion step And determining the number of pixels for displaying the image object by dividing the size of the image object according to the size data by the pixel size according to the resolution information.

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