KR100470354B1 - Method and system for delivering and printing image data using network - Google Patents

Abstract

The present invention relates to a method and system for transmitting and outputting image data through a network. More particularly, the present invention relates to a P2P transmission method between an output center and a client having a high-definition output device and an integrated service. It relates to a method and a system. The method and system for transmitting and outputting image data according to the present invention include receiving goods order information, receiving a file transfer command, compressing an image file by a predetermined method, and storing the goods order information to a management server. Transmitting, receiving the output center IP address from the management server, and transmitting the product order information and the compressed image file to the output center terminal by using a predetermined protocol using the output center IP address.

Description

Image transmission and output method and system over network {METHOD AND SYSTEM FOR DELIVERING AND PRINTING IMAGE DATA USING NETWORK}

The present invention relates to a method and system for transmitting and outputting image data through a network, and more particularly, to a data transmission by a peer-to-peer (P2P) method between a client and an output center having a high-definition output device. The present invention relates to a method and a system for providing an additional integrated service.

1 is a diagram illustrating a configuration of a conventional image output service system.

The image output service through the conventional network is made through a server-client structure. That is, when image data is transmitted from the client 115 to the server 100 via the network 110, the server takes the basic structure of outputting the received image data using the output device 105 owned by the server. However, the image transmission and output service through such a method has problems such as a limitation of a client that can access a server, a decrease in communication efficiency, and a server overload.

In addition, the existing image file format was used as a joint photographic coding experts group (JPEG) file format.

JPEG is designed for full-color and gray-scale compression, and has advantages in work in photography and the arts. Most often used on the Internet with GIFs. Compared to GIF, data compression is better. In addition, GIF can display 256 colors, while JPEG can display 16 million colors, making it suitable for high-resolution displays. Another useful feature of JPEG is that the creator of the image can control the quality of the image and the file size.

Due to these advantages, most conventional image compression methods use a joint photographic coding experts group (JPEG) format.

However, the compression process by the joint photographic coding experts group (JPEG) compresses the color tones and converts them into a single tonal format, thereby degrading the quality of the image. In other words, this lossy compression process inevitably resulted in deterioration of print quality, and in particular, it was inappropriate to use a joint photographic coding experts group (JPEG) compression method for a high-quality print.

In addition, there was an economic burden on the server to have its own output. As a result, it was limited to low resolution business areas, and there was a limit to having a high resolution printing machine due to economic burden.

Accordingly, an object of the present invention is to provide a method and system for transmitting and outputting an image using a peer to peer (P2P) scheme.

In addition, an object of the present invention is to provide a method and system that can prevent the deterioration of the image quality while increasing the transmission efficiency by using a compression algorithm with low loss or low loss rate.

In addition, an object of the present invention is to provide a method and system that can reduce the burden on the server and improve the transmission efficiency through data transmission through a peer-to-peer (P2P) method between the output center and the client having a conventional high-definition output device In providing.

In addition, an object of the present invention is to provide a method for transmitting and receiving images while maintaining the network connection method by the existing floating IP method through a transmission and reception program using the floating IP.

1 is a diagram showing the configuration of a conventional image output service system.

2 illustrates an image transmission and output system via a network according to an embodiment of the present invention.

3A and 3B are flowcharts illustrating an image transmission and output method through a network according to an exemplary embodiment of the present invention.

Figure 4 is a flow chart illustrating a procedure for ordering in a transmission center according to an embodiment of the present invention.

5 is a flowchart illustrating a file transfer process according to an exemplary embodiment of the present invention.

Figure 6a is an exemplary screen showing a task list screen according to an embodiment of the present invention.

Figure 6b is an illustration of a basic information input screen displayed on the display device of the terminal when ordering goods in the transmission center according to an embodiment of the present invention.

Figure 6c is an illustration of an image file input screen displayed on the display device of the terminal when commodity order in the transmission center according to an embodiment of the present invention.

Figure 6d is an illustration of a product input screen displayed on the display device of the terminal when the product orders in the transmission center according to an embodiment of the present invention.

6E is an exemplary view of an output center information screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

Figure 6f is an illustration of a transmission screen displayed on the display device of the terminal when ordering goods in the transmission center according to an embodiment of the present invention.

7 is a screen example showing a product screen received at the reception center according to an embodiment of the present invention.

8A shows a compression method according to the present invention, and FIG. 9 shows a transmission protocol according to the present invention.

8B is a diagram illustrating a two-stage conversion method to which a two-dimensional DWT method is applied according to an embodiment of the present invention.

9 is a table illustrating a file compression protocol according to a preferred embodiment of the present invention.

10A is a view showing a delivery process according to an embodiment of the present invention.

10b is a view showing a settlement procedure according to a preferred embodiment of the present invention.

10c illustrates a settlement procedure according to another preferred embodiment of the present invention.

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

200: management server

210: subscriber database

215: Commodity Database

220: payment history database

225: network

230: transmission center

235: Delivery Center

240: output center

According to a first aspect of the present invention for achieving the above objects, there is provided a recording medium containing a method and system for transmitting and outputting images over a network and a program capable of performing such a method.

According to another embodiment of the present invention, in the method for providing an image output service in a transmission center terminal combined with a management server and an output center terminal through a network, receiving product order information—the product order information is Including an output center identifier and an image file, receiving a file transfer command, compressing the image file by a predetermined method, transmitting the product order information to the management server, and output center from the management server. Receiving an IP address, and transmitting the product order information and the compressed image file to the output center terminal by a predetermined protocol using the output center IP address, the transmission center terminal by the P2P method Data exchange between the output center and Can output image files to the writer Center is connected to the output terminal group.

The method may further include receiving an ID and a password from the transmission center terminal, and authenticating the transmission center terminal using the ID and password, and providing an image output service only to the transmission center terminal authenticated through the authentication process. It is desirable to provide.

The commodity order information may include at least one of job information, file information, and commodity information. Preferably, the compression method using a predetermined method uses a wavelet compression algorithm.

In addition, in the wavelet compression algorithm, the discrete webbret transformation is preferably performed at least about 4 times and about 6 times. In addition, it is preferable to use the 80000 port and the 80001 port of the TCP / IP protocol for the protocol by the predetermined method.

In addition, a protocol according to a predetermined method may transmit a file in blocks, and the blocks are preferably 4K bytes.

In another preferred embodiment of the present invention, a method for providing an image output service in a management center coupled to a transmission center and an output center via a network, the method comprising: receiving product order information from the transmission center, wherein the product The order information includes an output center identifier, extracting an output center identifier from the product order information, extracting an IP address of an output center corresponding to the output center identifier, and transmitting the output center IP address to the transmission center. And transmitting to the output center terminal through transmission and reception according to a protocol by a predetermined method of image data compressed by a predetermined compression method of a transmission center terminal and an output center terminal by a P2P method. You can output an image file.

The method may further include receiving an ID and a password from a transmission center, and authenticating the transmission center using the ID and password, wherein the image output service is provided to the transmission center terminal authenticated through the authentication process. It is preferable.

In addition, when the output center is not connected to the network, receiving a compressed image file from the transmission center by a predetermined method, storing the image file and product order information, and managing the output center. Determining whether the server is connected, and when the output center connects to the management server, transmitting the image file and product order information to the output center, regardless of whether the output center is connected to the management server. It is desirable to be able to order goods and transfer image files.

Hereinafter, a preferred embodiment of the method and system for transmitting and outputting an image through a network according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing an image transmission and output system via a network according to an embodiment of the present invention.

The present invention relates to a method and system for compressing and transmitting image data and outputting the same, and relates to a service for outputting high-quality digital photographs.

That is, the present invention has a consumer and a high-definition output device that wants a high-definition output service of the image data of the digital photo for printing, such as a photo shop, a digital photo service provider, an online photo vendor, a professional photographer, a photo design department, the general public who owns a digital photo The present invention relates to a method and a system for providing a high quality, high capacity image data transmission and output service between output centers.

Referring to FIG. 2, the present invention includes a management server 200, a transmission center 230, and an output center 240, and may further include a parcel delivery server 235.

The management server 205 is coupled with databases such as server 205, subscriber database 210, product database 215, payment history database 220, and the like. According to the present invention, the management server 205 stores information on membership authentication, order information, payment information and the like and relays payment and delivery, but does not relay image file transmission between the transmission center and the output center.

That is, since the transmission is performed using the image transmission module provided in the terminals installed in the transmission center and the reception center, the transmission speed and the burden on the server can be reduced.

The subscriber database 210 stores information about a transmission center and a reception center. Here, the information on the transmission center includes an address, a name, a telephone number, and the like, and the information on the transmission center includes a representative's name, an address, a fax number, and the like.

The product database 215 stores information on an output service (hereinafter referred to as a product) of image data provided by the present invention. The information on the output center corresponding to the product may be extracted, or the product information corresponding to the output center may be extracted and provided to the transmission center and the output center.

The payment details database 220 includes information about the goods ordered by the consumer and information about payment details, and then uses the information stored in the payment details database in the settlement process.

When the transmission center 230 transmits the desired product order information and image data to the output center, the output center 240 receives the product order information and image data and uses an output unit coupled to the output center 240. Print out the printout corresponding to the image data.

That is, various types of print services can be provided to the transmission center by using various output devices provided in the plurality of output centers existing offline.

The system according to the present invention may further include a delivery center 235. That is, the output center may deliver the printed matter output through the output unit 245 provided in the output center to the transmission center 230 through the delivery center 235 (see FIGS. 10A to 10C).

3A and 3B are flowcharts illustrating an image transmission and output method through a network according to an exemplary embodiment of the present invention.

According to the present invention, it is possible to provide a method of using a high-quality digital photo output service coupled to an output center through transmission of image data compressed by a predetermined compression scheme between a transmission center and an output center coupled through a network. have.

Hereinafter, an image transmission and output method through a network according to the present invention will be described with reference to FIGS. 3A and 3B.

In step 300, the terminal of the transmitting center accesses the management server through the network. In step 303, the management server performs authentication through authentication request information including an ID and a password.

In step 306, the terminal of the output center accesses the management server through the network. In step 309, the management server performs authentication through authentication request information including an ID and a password.

In step 310, the terminal of the transmission center receives order information such as a product and an output center, and transmits the order information to the management server in step 315. In step 320, the management server extracts the IP address of the output center and transmits the extracted IP address to the terminal of the transmission center in step 325.

In step 330, the terminal of the transmission center compresses the image file by a predetermined method. Conventional JPEG compression technology is a lossy compression method, and this lossy compression process inevitably degrades the quality of printed matter.

Accordingly, the present invention uses a lossless compression method according to the wavelet compression method (see FIGS. 8A and 8B), and can increase transmission efficiency by a protocol optimized for the compression method (see FIG. 9). It is preferable to use a TIFF file as an image file format suitable for such a lossless compression method.

TIFF is a standard file format widely used for scanning, storing, or exchanging black and white or halftone still images. The feature is that the attribute of the image data is defined as tag information. For this reason, in the case of the image file in the TIFF format, the application program can recognize the data format by reading the standardized tag information described in hundreds of bytes at the beginning of the image file. The tag portion is provided with a flag corresponding to various types of image data.

Furthermore, data can be transmitted and received efficiently without burdening the server by exchanging image data between the terminal of the transmission center and the terminal of the output center according to the predetermined protocol according to the present invention without passing through the server.

In step 335, the terminal of the output center is accessed, and in step 345, the order information and the image file are transmitted. In operation 340, the terminal of the output center stores transmission information such as a log file connected to the terminal of the transmission center.

In step 345, order information and image files are received from the transmission center terminal. In operation 350, the terminal of the output center decompresses the received image file and checks for an abnormality of the received file.

If there is no abnormality as a result of the inspection, a file normal confirmation signal is transmitted in step 360.

When passing through the payment process in step 365, the output center in step 370 performs a print job using the terminal and the output device via the terminal.

Thereafter, when the output job is completed, the terminal of the output center accesses the management server through the network in step 375. The management server performs authentication through authentication request information including an ID and a password.

In operation 385, the terminal of the output center transmits output center information and a job completion signal to the management server.

In step 390, the management server sends a delivery command to the terminal of the delivery center, the delivery center receives the delivery command and delivers the printed matter to the transmission center.

In the above, the image transmission and output method has been described on the premise that the output center is connected to the server, but the order information and the image transmission can be performed even when the output center is not connected.

That is, when the output center does not connect to the management server, the order information and image files are transmitted to the management server. Then, when the output center connects, the output center transmits the order information and image files to the output center. The product order information and image data can be transmitted regardless of whether or not it is connected to the network (see Fig. 5).

4 is a flowchart illustrating a procedure for ordering in a transmission center according to an embodiment of the present invention.

Consumers who want high-definition digital photo printing services, such as photo shops, digital photo service providers, online photo sellers, professional photographer groups, photo design departments, and the general public who own digital photographs, can select jobs, enter basic information, select files, select products, Order goods via procedures such as transfer and payment.

Hereinafter, a product ordering procedure at the transmission center will be described with reference to FIG. 4.

The initial ordering process according to the present invention includes job selection (see Figure 6a), basic information input (see Figure 6b), file selection (see Figure 6c), product selection (see Figure 6d), transmission (see Figure 6f), payment It is preferable to set in order of. Of course, in the case of further orders or reorders afterwards, by using the basic information entered during the initial order, it is natural that the basic information input procedure may be omitted.

In step 400 the terminal of the transmitting sensor is connected to the management server, and in step 405 through the authentication process.

In step 410, the transmission center selects a desired job (see FIG. 6A). Here, the job refers to a product order process of the transmission center or a product output process of the reception center, and may be classified into an existing job and a new job.

In step 415, basic information is input at the terminal of the transmitting center (see FIG. 6B). The basic information means a title, a request date of completion, and a consignee address required for the delivery center to deliver the printed matter.

In step 420, an image file to be printed is selected at the terminal of the transmitting center (see FIG. 6C). Here, the image file refers to an image file of a printed matter to be printed by an output device, and a plurality of image files may also be designated.

In step 425, a product information source is designated at the transmitting center terminal (see FIG. 6D). The product information includes information on the size of the product desired by the consumer, the presence or absence of coating.

In step 435, the transmission center terminal transmits the product order information to the management server, and transmits the product order information and the image file to the output center (see FIG. 6F).

That is, when the transmission center terminal receives a transmission command, the transmission center terminal transmits the order information to the management server and stores it in a database coupled to the management server, and the order information and the image file are transmitted to the terminal of the output center.

The payment process ends by making a payment at step 440.

5 is a flowchart illustrating a file transfer process according to an exemplary embodiment of the present invention.

In step 500, the terminal of the output center receives information necessary for product designation, output center designation, other orders and delivery, and finally receives an order transfer command.

In step 503, order information is sent to the management server. Thereafter, the management server may store the order information in a database, and then use the order information stored in the database in the settlement process, the order process, and the customer management process.

In step 505 the file is compressed. The compression process of the file will be described with reference to FIGS. 8A and 8B.

In step 510, it is checked whether the management center of the output center is connected. That is, if the output center is connected to the management server, the output IP address is received in step 513 and the order information and image file is transmitted to the IP address in step 515.

As a result of the determination of step 510, the server does not access the management server, but transmits the order information and image file to the management server in step 520, and determines whether the management center is connected to the management center in step 525.

Then, when the terminal of the output center accesses the management server, the received order information and image file may be transmitted to the output center in step 515.

In step 530, the terminal of the output center stores the received order information and the image file, and in step 535 decompresses the image file. In step 515, the state of the decompressed image file is inspected, and if there is no error, the image file is output by using a high-definition output device coupled to the terminal of the output center. do.

In addition to the above procedure, a delivery procedure and a settlement procedure may be further included, and the delivery and settlement procedure will be described with reference to FIGS. 10A and 10C.

6A and 6E are diagrams illustrating screens displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

In the present invention, the transmission center must perform an additional procedure as well as a transmission process of transmitting the product order information and the image file to the output center. Hereinafter, a series of processes from creating basic information corresponding to each image file to payment and printing jobs will be referred to as jobs.

The task is classified into a 'work list item' and a 'new work item' which are being performed or have been completed. FIGS. 6B to 6F will be described based on a process of performing a new work. 6B and 6E have been described with reference to a process of performing a new task, the present invention is not limited to the method of performing the task list of the new process, and the existing task list is provided by the invention provided by the present invention. No wonder you can view, change, or add it.

Hereinafter, a process of performing a task will be described with reference to FIGS. 6A to 6F.

6A is an exemplary screen illustrating a task list screen according to an exemplary embodiment of the present invention.

Provides a task list screen provided by the present invention. The task list screen is a screen that provides a menu for a task that is being performed or has already been performed. According to the present invention, the task list screen may include a task list window 600, a task information window 605, a recipient information window 610, a transmission / reception information window 615, and the like.

When the job list window 600 job is selected, information corresponding to the job is displayed in the job information window 605, the recipient information window 610, and the transmission / reception information window 615.

That is, the task list window 600 provides a list of previously performed tasks and completed tasks, and provides a list of image files corresponding to the task list for each task list.

Detailed information corresponding to the job list or the image file list may be displayed in the job information window 605, the recipient information window 610, and the transmission / reception information window 615 as described above.

According to an embodiment of the present invention, an identification mark may be provided before the image file list to provide information on the job list. Use the color or symbol on the identification mark to assign colors corresponding to jobs that have not completed transmission, jobs for which additional requests have been entered at the sending center, jobs given answers at the output center, jobs identified at the destination, etc. Track the progress of your work.

The job information window 605 provides information on a title, a registration date, a completion request date, a product name, an output center name, a quantity, a price, a payment date, a payment status, an order content, and the like corresponding to the job.

The payee information window 610 provides information about the payee name, telephone number, payee address, and the like.

The transmission / reception information window 615 provides information on a transmission date and time, a transmission file, and additional request items. Information about a file name, a file size, and the like of the transmitted file can be provided.

In FIG. 6A, if the item 601 is selected, a product order may be performed through the processes of FIGS. 6B and 6F. Hereinafter, a series of order procedures will be described with reference to FIGS. 6B and 6F.

6B is an exemplary diagram of a basic information input screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

In FIG. 6B, if the item 'Create New Job' is clicked, the basic information input screen as shown in FIG. 6B is provided. In the present invention, the basic information is provided with a screen for inputting order information such as a title of a job, a request date for completion, order details, and payee information such as a payee name, a telephone number, and a payee address.

Via this basic information input process, an image file selection screen as shown in FIG. 6C is provided.

6C is an exemplary view of an image file input screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

In the present invention, the image file uses a wavelet compression algorithm that can perform lossless and high efficiency compression. The compression algorithm can be applied to all existing image file methods, but it is preferable to use a TIFF file.

Hereinafter, an image file selection procedure will be described with reference to FIG. 6C.

The image file input screen may include an image file list window 620 and an image file selection window 625, and the selected image file may be displayed on the image file selection window 625.

The file selection method can be moved by double clicking the desired file in the file list window or by using the mouse. In addition, when the file selection button 622 is clicked on, only one designated file is selected, and when the user clicks on the entire selection button 623, all files are selected in the file list window.

After completing the file selection process as described above, clicking the Next button 626 provides a product selection screen as shown in FIG. 6C.

6D is an exemplary diagram of a product input screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

Referring to FIG. 6D, the product input screen includes a product selection window 630, a product description window 633, and an output center information window 636 corresponding to the product.

The product selection window 630 displays the kind of goods provided by the present invention. When a desired product is selected in the product selection window 630, not only the product information corresponding to the product is displayed on the product description screen 633, but also the output center information corresponding to the product is displayed in the output center information window 636. Is provided.

The product description window 633 provides general information about the product name, product features, and price of the product. Due to the cost of a high-definition output, it is difficult to equip the output corresponding to all products in one output center. Therefore, the name of the output center corresponding to the designated product and the product price presented by the output center are displayed on the product description window 636.

In the past, it was difficult to provide an output unit corresponding to each commodity, that is, the type of each printed material at the output station. However, according to the present invention, a wider range of consumer choices can be made for various products. In addition, when the output center name displayed on the output center information screen is clicked in the product selection procedure, the output center information screen as shown in FIG. 6E is provided.

6E is an exemplary view of an output center information screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

Referring to FIG. 6E, the output center information screen includes information on an output center such as an output center name, a representative name, a telephone number, a fax number and an address, and a product information screen provided by the output center.

In accordance with the present invention, geographic information about the output center may be provided by clicking on the View Directions 640 item.

6D and 6E, through the product and output center selection process, a transmission screen as shown in FIG. 6F is provided.

6F is an exemplary view of a transmission screen displayed on a display device of a terminal when a product is ordered in a transmission center according to an exemplary embodiment of the present invention.

Before the product order is transmitted, the transmission process is performed by passing the final confirmation process for the product order information inputted from the transmission center as shown in FIG. 6F and clicking the transmission button 660.

As described above, in the transmission process, the compression process provided by the present invention is performed (see FIGS. 8A and 8B), and when the compression process is completed, a transmission process according to a predetermined protocol is performed (see FIG. 9).

After the transmission process is completed, the transmission process is completed by checking a file state and transmitting a file normal confirmation signal.

7 is an exemplary screen illustrating a job list screen in a reception center according to an exemplary embodiment of the present invention.

When the product order is finished, a work screen as shown in FIG. 7 may be provided with respect to the product order information received from the output center and the information on the image file.

The work screen includes a work list window 700, a work information window 705, an additional request item window 710, a transmission / reception information window 615, and the like, and the items and functions for the window are similar to those of FIG. 6A, and thus will be omitted. Shall be.

However, in the additional request item window 711, information about changes or additional request items is displayed after ordering the product.

In order to facilitate the understanding of the present invention, the transmission center performs a transmission process in FIG. 6A and FIG. 7 and the output center receives the received merchandise screen. However, the image file is stored in the output center via a similar process. Of course, it is possible to transmit the image file and receive the image file at the transmission center.

The file transmission method according to the present invention is composed of a compression method using a wavelet algorithm and a transmission method for efficient transmission and reception.

8A to 8B are diagrams illustrating a compression method according to the present invention, and FIG. 9 is a diagram showing a transmission protocol according to the present invention.

8A illustrates a compression procedure according to an embodiment of the present invention.

Referring to FIG. 8A, the compression scheme according to the present invention consists of a process of image pre-analysis, two-dimensional wavelet transform (DWT), quantization, and encoding.

The biggest influence on the image file transfer and output process is the size of the image data. In other words, in order to save the storage space of the storage medium and to compress the size of the image data which has an absolute influence on the transmission speed, and to output high-quality prints, a compression method that can eliminate or minimize the damage of data during the compression process is required. .

The compression scheme by the wavelet algorithm according to the present invention can provide excellent image quality at a high compression ratio. In addition, the compression scheme according to the present invention provides fast compression and decompression speed, and the user can select image compression to allow lossless compression and loss.

In addition, it provides a function of setting the compression ratio to the user, and provides a preview function of the image and a scaled image reproduction function according to the compression ratio. Here, magnification is a method of making a change such as enlarging or reducing the size of an image as a technique of graphics. For example, to enlarge an image four times, the coordinate axis of each data may be four times.

In addition, the present invention can use a TIFF image of the existing image format, it is possible to output a high-quality printed matter as compared to the file compression method that basically results in image loss, such as JPEG files.

Hereinafter, the compression method according to the present invention will be described with reference to FIG. 8A.

As described above, the compression method according to the present invention is an image compression method using wavelet transform.

The compression method using wavelet transform is superior in image quality and compression efficiency than conventional compression (JPEG standard, ITU T.81) based on the existing DCT algorithm. It is also faster to compress than fractal image compression, and the compression scheme can regenerate the entire image in the rest of the data space by randomly using a definite sequence of bits instead of using data positions.

The compression scheme according to the present invention consists of image pre-analysis 800, two-dimensional wavelet transform (DWT) 805, quantization and encoding 810.

By pre-analyzing the image in step 800, the RGB signal is converted into a YUV signal.

That is, in this step the image data is converted to grayscale on different image types and a series of chromaticities. The above step is a step before the start of the compression is converted from the Algibi (RGB) method to YUBV method, which is the most suitable form for the wavelet conversion step.

The red-green-blue (RGB) method refers to a color model or color display method that defines colors by red, green, and blue. The RGB system that displays colors by mixing red, green, and blue, which are the three primary colors of light, is employed in color televisions and color monitors of many computers (or display devices using light other than print media).

RGB method uses the additive color method that mixes the ratio of red, green and blue to make the desired color. In other words, the color of a point on the screen is made of a combination of three colors.

R is red, G is green, B is blue, R + G = yellow, R + B = red purple (magenta), B + G = cyan (Cyan), R + G + B = white, and none of R, G and B is applied (i.e. If nothing shines), it becomes black. In this way, if the color is made according to the combination of whether R, G, or B is illuminated, the color becomes eight colors.

The YUB method means a luminance signal and a subcarrier central axis signal. In other words, the abbreviation used to refer to the analog luminance signal and the chrominance signal in the system, Y means the luminance signal, U, V means the two sub-carrier central axis used in the PAL method, color difference signals of BY, RY is processed U This is used to modulate the PAL subcarriers on the V-axis. This mix occurs because U and V are associated with the color chrominance signal.

In step 805 a two-dimensional wavelet transform (DWT) process is performed.

Correlation of information of each pixel value may be removed through the 2D wavelet transform (DWT or DWT). In other words, information that was originally distributed in the entire image is concentrated and stored in fewer coefficients.

The DWT is very similar to the Discrete Fourier Transform (DFT) method, except that it does not use the trigonal Sine or Cosine function to analyze the image data.

The basic function is scaled and wavelet technology, and it uses both orthogonality and dense representative information representation technology to perform the reconstruction process independently of the conversion process. Compression can be performed.

This method provides the advantage that the image data can be analyzed without generating windowing effects that can occur by applying infinite sine function to the limited image data using the DFT method.

The image signal represented two-dimensionally may be transformed using a two-dimensional transform scheme. In other words, this dimensional transformation is achieved by a one-dimensional transformation applied independently to the columns and rows of the image.

The DWT method divides an image into four new images within the wavelet area. The first image contains low-pass information, the other two contain horizontal and vertical high-pass information, and finally diagonal information.

Then, the transformation is applied repeatedly and repeatedly until the low-pass image finally contains one pixel in the low-pass image.

By quantizing and encoding in step 805, the compression process is completed.

In the quantization and encoding process, a position and an order of image information to be displayed in a stream of data are determined. That is, important information can be placed at the beginning of the data stream and relatively less important data can be left behind or deleted.

Quantization refers to the range that a value takes, divided into several discrete intervals. Each interval may or may not be the same interval and is represented by one value within that interval. Examples are statistical distribution tables, A / D conversions that convert consecutive values into discrete values, and so on.

Unlike the conventional algorithm, the required information in the image data sequence is selected and ordered through quantization and encoding. That is, through quantization, image information may be separated into important information transmitted to a coder and information that is not important and is ignored.

In other words, it uses a new coding strategy consisting of two steps, such as the quantization and encoding process according to the present invention. Through the above process, it is possible to improve the compression ratio and maintain the accurate compression quality.

Among them, the quantization step can reduce the number of wavelet coefficient variables required for the operation, and fewer bits for each coefficient due to the smaller representation values in the encoding step. It is necessary. It is desirable to decide how many steps of quantization to use during the encoding process.

Initially, all coefficients are quantized in a dense way, but if there is enough area left in the data sequence, the quantization interval becomes narrower and tighter until there are no errors and no loss of conversion.

8B is a diagram illustrating a two-stage conversion method to which a two-dimensional DWT method is applied according to an embodiment of the present invention.

Referring to Figure 8b, an example of a two-stage transformation with this two-dimensional DWT method is shown, and the actual implementation uses four to six transformation stages.

Referring to FIG. 8, a two-step wavelet transformation process of a grayscale image is shown.

In another aspect, the conversion process according to the present invention for calculating DWT may use a very fast algorithm based on integer arithmetic. The algorithm prevents conversion errors caused by rounding, thus enabling perfect lossless compression.

The lossless compression ratio of the present invention is better compared to LZW compression results based on purely entropy encoding algorithms.

Referring to Table 1 below, the average result of decompressing a 40 MB TIFF image file is shown. Table 1 shows data calculated based on the results of experiments based on the Pentium III 500 MHz.

Kinds Elapsed time (compression / release) Damage File size after compression Remarks Compression method according to the present invention 25/24 Sec No damage 3.8 MB Ideal for output transmission JPEG Standard 20/19 Sec With damage 1.4 MB It is so damaged that it cannot be used as a file for output. LZW 27/29 Sec No damage 32 MB Compression rate is too low for high speed transfer

9 is a table showing a file transfer protocol according to a preferred embodiment of the present invention.

The protocol according to the present invention enables the P2P (P2P) image transmission that can be applied to the existing IP. In addition, it is possible to transmit high-capacity image data quickly by compressing more than 90% of data for speedy data transmission, and as described above, it supports lossless compression excluding loss in compression / decompression such as conventional JEPG for data stability. do.

According to the present invention, the amount of 400MB is compressed to about 40MB through the data loss and compression process without compression loss according to the present invention, and tested through the existing ADSL, about 1 minute 40 seconds to transfer the 40MB It takes time.

According to the present invention, a peer-to-peer (P2P) transmission method that does not go through a server is used, and high-quality and high-capacity images can be compressed up to 1/10 using an image compression method according to the present invention. In addition, it is possible to minimize the load on the network by managing only basic access information in the server by the protocol optimized for the compression method and the ultra-fast transmission method. In addition, it is a transmission method that can be used with confidence because the server manages the information when network exception, PC error or other exception occurs.

The protocol according to the present invention is designed to enable stable transmission between floating IPs such as ADSL while using TCP / IP, and is designed to correspond to the compression scheme provided by the present invention.

Hereinafter, a protocol according to the present invention will be described with reference to FIG. 9.

The basic structure of a message according to the present invention consists of a header and content. In addition, it is preferable to use the TCP / IP protocol according to the present invention and transmit using the 80000 and 80001 ports.

The basic signals of the protocol according to the present invention are connection response 905, file information 901, file check 915, existing file 920, file content 925, final file content 930, and job cancellation 935. , File retransmission 940, and the like. Since the access request signal is automatically made when the terminal accesses, it is desirable not to define a separate protocol.

The connection response 905 signal is a signal indicating a response when a connection signal is input. If the connection is not established, an error occurs automatically on the terminal.

The file information 901 signal is general information of a compressed file, and the content has a structure of a file name, a file size, and a work code. Work codes are assigned according to the order of the divided blocks.

The file check 915 signal indicates general information of the compressed file, and the content consists of a file name and a work code.

The existing file 920 signal represents general information of the file before being compressed, and the content has a structure of file name, file size, file mode, and host name.

The file content 925 signal is a signal when a file is cut in blocks and transmitted, and is divided into 4k byte sizes of the compressed file and included in the content.

The final file content 930 signal indicates the last block fragment of the compressed file when the file is cut and transmitted in blocks, and the content includes the last block fragment of the compressed file.

The job cancel signal 935 is a signal used for a file transfer cancel request and preferably consists of a header without content.

The file retransmission signal 940 is a signal used to retransmit a corresponding block when a packet is lost, and is preferably composed of a header without content.

In addition, according to the present invention, the retransmission request may occur when the size of the file being transmitted does not change for a certain time.

10A is a view showing a delivery process according to a preferred embodiment of the present invention, 10b and 10c is a view showing a settlement process according to a preferred embodiment of the present invention.

After the merchandise order and image file transfer process described above, a delivery and settlement process is performed.

10A is a view showing a delivery process according to an embodiment of the present invention.

Hereinafter, a delivery procedure will be described with reference to FIG. 10A.

In step 1000, the transmitting center connects to the management server and passes through the authentication process. When the product is selected and the product is ordered, the order information is transmitted to the management server in step 1005, and the order information and the compressed image data are transmitted to the output center in step 1010.

Thereafter, when the output job of the image data is finished at the output center, a job completion signal is transmitted to the management server in step 1020. In operation 1020, when the management server transmits a delivery command signal to the delivery center, the delivery center may deliver the printed matter to the delivery center.

10B is a view showing a settlement procedure according to an embodiment of the present invention.

In step 1030, when the payment is made from the transmitting center to the management server, the management server remits the payment to the output center, excluding a predetermined fee and shipping amount, among the payments. Then, in step 1040, the payment is sent to the delivery center, and the settlement is completed.

The settlement process is one embodiment of various settlement processes, and various modifications thereof may be possible.

10C is a diagram illustrating a settlement procedure according to another preferred embodiment of the present invention.

In step 1050, payment is made directly from the transmission center to the output center. Then, the fee is remitted to the management server in step 1057 and the delivery amount is remitted in step 1059 to complete the settlement.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

The method and system for transmitting and outputting an image through a network according to the present invention have an effect of preventing loss of image quality and increasing transmission efficiency by using a lossless or low loss compression algorithm.

In addition, the present invention has the effect of reducing the burden on the server through the data transmission through the peer-to-peer (P2P) method between the output center and the transmission center having a conventional high-definition output, and also has the effect of increasing the transmission efficiency.

In addition, the present invention has the effect of transmitting and receiving images while maintaining the network connection method by the existing floating IP method through the transmission and reception program using the floating IP.

Claims (18)

delete delete delete delete delete delete delete delete In the method for transmitting and outputting images in an image output system via a network, A transmission center identifier for specifying one of the plurality of output centers using a preset transmission center user interface in any one of the management centers and the plurality of transmission centers coupled through the network with the plurality of output centers; Generating information and transmitting the information to the management server; Extracting, by the management server, the output center identifier from the information, and determining whether the output center corresponding to the output center identifier is connected; When the output center accesses the management server, the management server extracts an IP address corresponding to the output center, and transmits the IP address to the transmission center, the transmission center uses the IP address to image. Generating goods order information including a file and transmitting it to the output center; If the output center does not connect to the management server, the transmission center generates product order information including an image file and transmits it to the management server. The management server connects the output center to the management server. If it is, sending the product order information to the management server; And Outputting a preset output center interface screen by the output center for printing the image file corresponding to the product order information Image file output method comprising the. The method of claim 9, The preset call center user interface Task Info window. And a recipient information window and a transmission / reception information window including at least one of a job list screen, a basic information input screen, an image file input screen, a product input screen, an output center information screen, and a transmission screen. The method of claim 9, The preset Output Center user interface Task List Window, Task Information Window. The image file output method comprising at least one of the additional request window, the transmission and reception information window. The method of claim 9, And the product order information includes at least one of job information, file information, and product information. The method of claim 9, The compression method according to the predetermined method includes using a wavelet compression algorithm. The method of claim 13, In the wavelet compression algorithm, the discrete wavelet transformation is performed about 4 to 6 times. The method of claim 9, The protocol by the predetermined method uses the 80000 port and 80001 port of the TCP / IP protocol. The method of claim 9, The protocol according to the predetermined method is an image file output method over a network, characterized in that for transmitting the file in blocks. The method of claim 16, The block unit is an image file output method over a network, characterized in that 4K bytes. delete