JP2006031730A - System, device, method for adjusting image size and content document - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display image information to be provided from a server while assuring a successful user interface in a client whose screen size is restricted. <P>SOLUTION: An HTML receiving/analyzing part 10 analyzes an HTML document received from the server 4 and an image acquisition part 12 acquires the image information based on the analyzed HTML document. An image size adjustment part 20 determines whether or not trimming is performed and an amount of trimming based on the HTML document and the image information. This determination is based on comparison of size, for example, between an original image and a browser of a personal digital assistant 6. In addition, size of a trimming image is determined to be displayed on the browser of the personal digital assistant 6. An image analysis part 22 determines trimming layout by analyzing a parameter to be specified in the HTML document and the original image, an image working part 24 trims the original image, an image transmitting part 14 adjust a form of the image information to an original file format and transmits the image information to the personal digital assistant 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technique for providing a content document including image information.

  In the Internet, various types of services are provided mainly on the World Wide Web (WWW). When using the WWW, information and services are provided from the server in the form of a document such as text (hereinafter referred to as an HTML document) described in HTML (Hyper Text Markup Language). Software called a viewer or browser operating on the client interprets text such as an HTML document sent from the server and displays it on the screen of a computer or information terminal as a client. By accessing the WWW using a browser, it is not necessary to prepare a dedicated application for each service, and the burden on the user side is greatly reduced. Therefore, portable information terminals compatible with networks such as PDA (Personal Digital Assistance) are rapidly spreading.

  Since this portable information terminal is required to be miniaturized so as to be portable, the screen size is limited as compared with a general small general-purpose computer. Therefore, some image information created on the assumption of a display of a small general-purpose computer and provided from the server cannot be displayed on the screen of the portable information terminal at one time.

  For such image information, the user of the portable information terminal has conventionally grasped the entire image by simply scrolling the screen in the vertical direction or the horizontal direction.

  Some portable information terminals have a function of reducing received image information to a size that can be displayed in the own screen. For example, in a portable information terminal, an image portion included in content such as a web page is displayed with an area ratio of 1/4.

  However, the method of scrolling the screen has a problem of requiring an extra operation from the user. In addition, a large amount of image information can be transmitted to the user at a glance, and partial display on the screen by a method of scrolling impairs the original information transmission power of the image information, There was also a problem that there was a risk of obstructing information understanding.

  On the other hand, the method of reducing and displaying the image information reduces the resolution of the image, and has the problem that the image is crushed and makes it difficult for the user to recognize the image information or not at all. It was.

  The present invention provides an image size adjustment system, an image size adjustment device, an image size adjustment method, and a content document that display image information provided from a server while ensuring a good user interface on a client whose screen size is limited The purpose is to do.

  An image size adjustment system according to the present invention is an image size adjustment system including a transmission side and a reception side, and the transmission side transmits a content document describing a trimming instruction together with a screen display content including an image. A receiving unit configured to receive the content document; an acquisition unit configured to acquire a group of original image information specified in the content document; and a trimming instruction specified in the content document. Trimming instruction detection means for detecting, trimming an original image represented by original image information indicated as a trimming target in the trimming instruction, and generating trimmed image information including only information on a partial area of the original image Image trimming means.

  According to this configuration, the receiving side includes a trimming instruction detecting unit that detects a trimming instruction specified in the content document, and the image trimming unit performs a trimming process on the original image information in accordance with the trimming instruction. Do. Here, trimming refers to extracting only information on a partial area of the original image, and the extracted partial image information is referred to as trimmed image information. The image size corresponding to the trimmed image information will basically be made smaller than or smaller than the size of the original image. The trimmed image information is provided to the client.

  The trimming instruction may be valid for the entire content document, or may be valid for each original image included in the content document. The image trimming means trims an original image for which a trimming instruction is valid.

  In one aspect of the image size adjustment system according to the present invention, when the trimming size for the original image to be trimmed is indicated in the content document, the image trimming unit is configured so that the trimming size is the trimming size. The original image to be trimmed is trimmed.

  In one aspect of the image size adjustment system according to the present invention, the receiving side determines the partial area extracted from the original image according to a trimming type indicating a trimming reference point specified in the content document. Trimming layout determining means is provided.

  According to this configuration, which part of the original image is to be extracted is determined according to the trimming type specified in the content document. For example, a position such as the center, top and bottom, left and right of the original image is designated as the trimming type, and the trimming layout determining means determines a reference point such as the center of the trimmed image according to the designated trimming type and performs trimming. Determine the image composition. The size of the trimmed image can be set to a predetermined value or can be determined by a value given separately.

  In one aspect of the image size adjustment system according to the present invention, the trimming layout determination means, based on an intra-image distribution of a predetermined pixel attribute of the original image, when a trimming type is not indicated in the content document. The arrangement of the partial area extracted from the original image is defined.

  According to this configuration, for example, pixel attributes such as a degree of difference between a color at each point of the original image and a predetermined background color, and a luminance value are used. For example, a pixel attribute that can distinguish the background from the extraction target image portion is used. For example, when the pixel attribute can be evaluated numerically, an attribute that takes a small value in the background and takes a large value in the extraction target image information is selected. The distribution of the pixel attribute can be determined simply based on the number of pixels having the attribute and those not having the attribute. When an attribute that can be evaluated by a value is used, the distribution is determined by weighting the attribute. You can also.

  According to a preferred aspect of the present invention, the trimming layout determining means is based on the density, the means for dividing the original image into a plurality of partial areas, the means for obtaining the density of the pixel attribute in each partial area, Means for selecting the partial area extracted from the original image from the plurality of partial areas.

  In this aspect, if the original image is divided into, for example, three partial areas whose positions are upper, middle, and lower, respectively, and the pixel attribute indicating the background is high in the middle partial area, the middle stage is trimmed, and the upper and lower stages are trimmed. Are selected as the partial area.

  In another preferred aspect of the present invention, the trimming layout determining unit obtains a barycentric position of the pixel attribute and determines an arrangement of the partial area extracted from the original image based on the barycentric position. .

  In this aspect, the gravity center position indicates a rough distribution of the extraction target image information in the original image. That is, for example, if the position of the center of gravity is on the left side, there is a high probability that the extraction target image information exists on the left side of the original image. Set to the left.

  The image size adjustment system according to the present invention can transmit and receive the image information together with information for trimming the image information. Therefore, even if the client cannot display a large image at a time due to screen size restrictions, etc., if it is a trimmed image, it can be displayed in the browser at the same time, and the image service from the server can be improved. The effect that it can be used at the resolution is obtained. That is, the user is freed from the operation of scrolling the screen, and the user interface is improved.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory diagram showing a schematic block configuration of a service relay apparatus according to an embodiment of the present invention and a schematic configuration of a server / client system using the same. The service relay device 2 relays, for example, a server 4 that provides a Web service and a portable information terminal 6 that is a client that receives the service via a communication line (not shown). Although only one server 4 and one portable information terminal 6 are shown in the figure, the service relay device 2 can relay and connect a plurality of servers 4 and a plurality of portable information terminals 6. Further, it is possible to connect another terminal such as a normal small general-purpose computer as a client.

  Now, the portable information terminal 6 does not request the service directly from the server 4 but requests it from the service relay device 2. Specifically, in the portable information terminal 6, the URL of the service relay device 2 is designated instead of the URL (Uniform Resource Locator) of the server 4. Therefore, the service relay device 2 appears to the user as one server.

  The service relay device 2 is roughly divided into a part having a client contact function for exchanging necessary information with a client, a part having a server contact function for exchanging necessary information with a server, The relay device 2 is divided into a portion for performing additional processing and the like.

  In the figure, an HTML reception / analysis unit 10 and an image acquisition unit 12 are server access means and constitute a part of a part having a server communication function. On the other hand, the part having the client communication function includes the image transmission unit 14. Further, the part that performs the addition processing and the like according to the present invention includes an image size adjustment unit 20, an image analysis unit 22, and an image processing unit 24.

  Next, the function of each part will be described. The HTML receiving / analyzing unit 10 receives the HTML text (content document) of the Web page requested from the portable information terminal 6 from the server 4. The HTML receiving / analyzing unit 10 has a function of interpreting the received content document. In particular, when a link is defined in the content document, a function that activates information acquisition processing from the link destination, or a function as a trimming instruction detection unit that detects a trimming instruction specified in the content document Have

  The image acquisition unit 12 performs an information acquisition process of acquiring an image (original image) from the server 4 based on an instruction from the HTML reception / analysis unit 10.

  The image size adjustment unit 20 receives the content document output from the HTML reception / analysis unit 10 and the image information output from the image acquisition unit 12. Based on these, it is first determined whether or not to perform trimming. When trimming is performed, the trimming amount is determined. The image size adjustment unit 20 determines whether or not trimming is to be performed based on a comparison between the display size of the original image and the display area size of the browser of the portable information terminal 6 as one of determination units for determining whether or not to perform trimming. Have means. When trimming is performed, the image size determination means determines the trimmed image size to a size that can be displayed on the browser of the portable information terminal 6.

  Here, the display size of the original image is an image size that will be displayed on the client screen when the trimming process is not performed, and the image display in the original image information itself or in the content document provided by the server. If an area is specified, it is determined by the specification. For example, in a display having a screen size larger than the display size of the original image, a large display area of the browser can be secured, and the image information is basically displayed as the original image. However, it may be difficult for a client having a small screen size to display the image information in the display size of the original image. The trimming necessity determination means determines whether or not the display size of the original image is larger than a reference determined according to, for example, the browser screen size of the client, that is, the size of the browser display area. Decide and instruct trimming to the image trimming means.

  The image analysis unit 22 analyzes the content document or the original image information, and determines an extraction target image area extracted from the original image. That is, the trimming layout is determined. This trimming layout determination is performed by a layout determination process based on the trimming type specified in the content document, or a layout determination process based on the distribution of predetermined pixel attributes of the original image in the original image.

  The image processing unit 24 trims the original image based on the trimming layout determined by the image analysis unit 22.

  The image transmission unit 14 adjusts the format of the image information trimmed by the image processing unit 24 to the original file format, and sends the image information to the portable information terminal 6.

  Next, the processing of this apparatus will be described. FIG. 2 is a processing flowchart for explaining the entire processing according to the present invention. When the portable information terminal 6 requests a content such as a Web page from the server 4 via the service relay device 2, the server 4 transmits an HTML document describing the content to the service relay device 2 accordingly. In the service relay device 2, the HTML receiving / analyzing unit 10 receives the HTML document sent from the server 4 (S50) and analyzes it (S55).

  As a result of the analysis, if it becomes clear that a link is defined in the HTML document, the HTML reception / analysis unit 10 starts processing for accessing the link destination and acquiring the designated file. For example, when an <IMG> tag for instructing image display is detected in an HTML document, the image acquisition unit 12 is activated.

  The image acquisition unit 12 requests the server 4 for an image file specified by the SRC option in the tag, and receives the file sent from the server 4 (S60). The received file is passed to the image size adjustment unit 20.

  The HTML receiving / analyzing unit 10 detects a trimming instruction specified in the HTML document, and sends a trimming request to the image size adjusting unit 20 (S65).

For example, a trimming instruction in an HTML document is
<IMG SRC = "/ Images / welcome.jpg"TRIMMING>
This is done by the description of <IMG> tag. Here, the attribute “TRIMMING” specified at the end of the tag instructs to perform trimming on the image specified in the tag. Note that the designation of the image file is described after “SRC =” in the middle of the tag.

  The image size adjustment unit 20 receives the content document output from the HTML reception / analysis unit 10, the trimming request, and the image information output from the image acquisition unit 12. The image size adjustment unit 20 first determines whether trimming is performed on the input original image information by the trimming necessity determination unit (S70).

  The trimming necessity determination unit determines that trimming is always performed when a trimming request is received from the HTML receiving / analyzing unit 10. Further, in the present apparatus, the trimming necessity determining means can trim the contents created without considering trimming designation, such as a conventional web page, to be provided to the portable information terminal 6 as necessary. It is configured.

  Specifically, the trimming necessity determining unit, when not receiving the trimming request from the HTML receiving / analyzing unit 10, determines the image size and mobile phone that will be displayed on the client screen when the trimming process is not performed. A determination is made based on a comparison with the display area size of the browser of the information terminal 6. First, when there is a service provision request from a client, this apparatus determines the display area size of the browser of the client. For example, when the client transmits an HTTP request, if a value is set in a client information item prepared in the request, the apparatus determines the type of the client based on the value and is registered in advance. From the correspondence table between the terminal type and the effective display area of the browser implemented in the terminal, the display area size of the browser of the client that issued the request is recognized. In addition, a table of correspondence between the terminal identification information such as the address and the browser display area size is registered and held in advance in this apparatus for each client who is permitted to use the service relay apparatus 2, and the request source It is also possible to search the table from the terminal identification information and recognize the browser display area size.

  On the other hand, the display size of the original image is adopted when the parameter for specifying the image display area is specified in the <IMG> tag in the HTML document provided by the server. Is the original size of the original image information.

  The trimming necessity determination means compares the display size of the original image obtained in this way with the display area size of the client browser, and the display size of the original image is, for example, 0.25 times the browser display area size. If it is larger, it is decided to perform trimming. Note that the ratio between the display size of the original image and the browser display area size may be a provisional value, and the value may be changed every time the original image is acquired from various Web pages. In this case, the threshold ratio for determining whether to perform trimming can be configured to be updated sequentially by statistically processing the ratio for each image.

  When it is determined that trimming is to be performed based on the determination in step S70 (S75), the image size adjustment unit 20 determines whether the trimming size has been determined (S80). If the trimming size has not been determined, the image size determination unit of the image size adjustment unit 20 obtains the trimming amount based on the image size of the original image, the designation of the HTML document, etc. from the image acquisition unit 12, and performs the trimming after the trimming. The image size (trimmed image size) is determined (S85).

The image size determining means uses, for example, the WIDTH attribute or HEIGHT attribute specified in the <IMG> tag to determine the trimmed image size. These WIDTH attribute and HEIGHT attribute are generally used for displaying an image in accordance with these values, and are used, for example, in the format shown in the next line.
<IMG SRC = "/ Images / welcome.jpg" WIDTH = "364", HEIGHT = "280">

  When it is determined that trimming is to be performed, the image size determining means can set the size specified by these WIDTH attribute and HEIGHT attribute as the trimmed image size. When the WIDTH and HEIGHT values are larger than the browser display area size of the client, or when the WIDTH attribute and HEIGHT attribute are not specified, the image size determining means makes the trimmed image size smaller than the browser display area size of the client. Determine as follows.

  The image size adjustment unit 20 passes the trimming image size determined in this way to the image analysis unit 22 together with the HTML document and the original image information. In the determination process S80, when the trimmed image size is determined, the above-described process S85 is omitted, and the determined trimming size is transferred to the image analysis unit 22.

  The image analysis unit 22 analyzes the content document or the original image information, and determines from which part of the original image the image information having the size specified by the trimmed image size is to be extracted (S90). Then, the image processing unit 24 trims the original image based on the trimming layout determined by the image analysis unit 22 (S95). The trimmed image information is sent to the image transmission unit 14, where the format is adjusted to the original file format (S100), and is transmitted to the browser of the portable information terminal 6 (S105).

  If it is determined in the determination process S75 that trimming is not performed, the processes S80 to S100 are omitted, the process proceeds to a process S105, and the original image information is transmitted to the browser of the portable information terminal 6 as it is.

Now, the type of trimming layout can be specified in the TRIMMING attribute specified in the <IMG> tag described above. For example,
<IMG SRC = "/ Images / welcome.jpg" TRIMMING = "center">
You can specify the type after “TRIMMING =”. The value “center” in this case sets a trimming reference point (anchor) at the center of the original image. For example, image information having a size specified by the trimmed image size with the anchor as the center point is extracted from the original image. FIG. 3 is an explanatory diagram showing an example of trimming in this case. An image 152 within the frame shown at the center of the original image 150 is taken out as a trimmed image.

  Various types can be prepared for specifying the anchor position. 4 to 12 are explanatory diagrams showing examples of arrangement of trimmed images in the original image for each type of anchor. 4 to 6 are diagrams showing the arrangement of the trimmed images in the original image with the trimming attributes “topleft”, “top”, and “topright”, respectively. In the figure, a frame 154 indicates the arrangement of the trimmed image in the original image 150. The trimming attribute values “topleft”, “top”, and “topright” are different in that the trimmed image is located at the left, center, and right with respect to the left-right direction of the original image, but the upper direction is the upper side of the original image. It is common in the point arrange | positioned. The trimming attribute values “left”, “center”, and “right” are different in that the trimmed image is positioned at the left, center, and right with respect to the horizontal direction of the original image 150, but the vertical direction of the original image 150 is different. Both are common in that they are arranged in the center. 7 to 9 are diagrams showing the arrangement of “left”, “center”, and “right”, respectively. Similarly, the trimming attribute values “bottomleft”, “bottom”, and “bottomright” are different in that the trimmed image is positioned at the left, center, and right with respect to the horizontal direction of the original image 150, but Both directions are common in that they are arranged below. 10 to 12 are diagrams showing the arrangement of “bottomleft”, “bottom”, and “bottomright”, respectively.

  The image analysis unit 22 and the image processing unit 24 perform processing using the above-described trimming attribute value. FIG. 13 is a process flow diagram illustrating the processes S90 to S100 in the image analysis unit 22, the image processing unit 24, and the image transmission unit 14.

  When it is decided to perform trimming and the processing shifts to the image analysis unit 22, the image analysis unit 22 checks whether or not the trimming attribute “TRIMMING” is specified in the <IMG> tag in the delivered HTML document ( S200). If it is designated, it is checked whether or not the above-mentioned trimming attribute value is designated (S205).

  If the trimming attribute value is designated, the image analysis unit 22 determines a trimming layout from the arrangement of the trimmed image in the original image designated by the attribute value and the trimming size (S210), and the image processing unit 24. The image information included in the trimming layout is extracted from the original image (S215).

  The extracted trimmed image is transferred to the image transmission unit 14, and the format is adjusted to the original file format (S220).

  On the other hand, if the trimming attribute is not designated in the determination process S200 that is a part of the process S90, the image size that will be displayed on the client screen and the browser of the portable information terminal 6 when the trimming process is not performed. This is a case where it is determined to perform trimming based on the comparison with the display area size (S70) (S75).

  In this case, the image analysis unit 22 determines a trimming layout based on the original image information. For example, the image analysis unit 22 determines, for example, whether the peripheral area of the original image or the inner area contains more information as an image by using an existing image analysis processing method such as contour extraction. Then, the rough type of the trimming layout is determined accordingly (S230). For example, the case where the information is unevenly distributed in the peripheral area of the original image is a case where the subject of the image exists separately on the top, bottom, left and right of the image and does not exist between them. In such a case, for example, one image extraction area is set on each of the upper and lower sides or the left and right sides of the original image, and it is determined that the image information from the pair of areas is combined into a trimmed image. The It should be noted that the pair of image extraction areas can be configured to select either a pair of upper and lower images or a pair of left and right image extraction areas according to the distribution of image information in the original image.

  On the other hand, in the determination process S230, when it is determined that the image information is unevenly distributed in one area in the original image, one image cutout area is provided in the original image, and the image information in that area is set as a trimmed image. It is decided that

  When the trimming layout determination means of the image analysis unit 22 determines a rough layout pattern as described above (S230), next, the specific arrangement of the image extraction area in the original image is determined as a predetermined pixel of the original image. The attribute is determined based on the distribution in the image (S235, S240). In this apparatus, color is adopted as the predetermined pixel attribute. For example, the deviation between the color of each pixel and the background color is evaluated as a pixel attribute. That is, it is determined that an image other than the background is represented in a color portion different from the background. This deviation can be objectively evaluated by a numerical value such as the sum of squares of the difference between the RGB value at each pixel and the white RGB component. Note that other pixel attributes that can distinguish the background and the extraction target image portion can be employed. For example, a luminance value can be used. If the pixel attribute is to be evaluated numerically, for example, an attribute having a small value in the background and a large value in the extraction target image information is selected. In addition, as the pixel attribute, a pixel attribute that is subjected to binary evaluation such as presence / absence of the attribute may be used.

  In the process S230, if one image extraction area is set in the original image, the center of gravity of the color deviation is set as the trimming center (anchor) (S235). A trimming layout is determined based on the position of the anchor and a predetermined trimming size (S80) or a trimming size determined in step S85 (S235), and the image processing unit 24 is included in the trimming layout. Image information is extracted from the original image (S245).

  14-16 is explanatory drawing which shows the example of process S235 when a color is used as a pixel attribute. In FIG. 14, since the subject of the original image 250 is “apple” and the other portion is the background color, the position of the anchor is determined at the center of “apple” by obtaining the color centroid, and the trimmed image 252 is The image is centered on the “apple”.

  FIG. 15 shows an example in which a large “apple” and a small “strawberry” are drawn close to the original image 254 to some extent. When the two objects are close to each other, the image extraction area is set to one and processed in this apparatus. The trimmed image 256 in this case is a position where the position of the anchor is closer to the “apple” side than the center of both objects due to the size relationship between the two objects. Incidentally, FIG. 16 is an example in which “apple” and “banana” of the same size are drawn to some extent close to the original image 258, and the trimmed image 260 has an anchor approximately at the center between both objects. Will be located. If the color tone is almost equalized in the original image as in a photographic image, the anchor will be located near the center of the original image.

  In the process S230, when it is determined that two image extraction regions are set in the original image, the original image is divided into a plurality of partial regions, and based on the total value and density of the pixel attributes included in each of the partial images, A region to be cut is determined (S240). Then, the image processing unit 24 extracts the image information included in the trimming layout from the original image (S270), and the extracted trimmed image is transferred to the image transmitting unit 14 and the format is adjusted to the original file format ( S220).

  FIG. 17 is a schematic diagram illustrating processing examples of processing 230, S240, and S270. In the figure, an original image 300 is divided into upper, middle, and lower three-stage partial areas 302 to 306, and for example, an average value of color deviations in each area is obtained. Here, the middle partial area 304 is cut based on the determination in step S230. The arrangement and size of the partial area 304, that is, how to divide the original image 300 into the partial areas 302 to 306, is that the average value of the color deviation of the middle partial area 304 is almost 0, that is, close to the background color. Or it determines in process S240 based on a required trimming amount. When the partial areas 302 to 306 are determined, the partial area 304 is cut in step S270, and the trimmed image 310 is generated by joining the upper partial area 302 and the lower partial area 306 remaining.

  If it is determined in the determination process S205 that there is no trimming attribute value, the process proceeds to the process S225, and thereafter, the same process as in the case where it is determined in the determination process S200 that there is no trimming attribute is performed.

  In the above, the example of the trimming of the image included in the service provided from the server 4 as the Web page has been shown. In this case, the image information is specified in a predetermined format in the content document described in HTML, but the present invention is also effective for content documents of a type other than HTML. In the above description of the processing, the image trimming processing in the case where parameters such as the trimming attribute are not specified in the content document has been described. Since such trimming processing can be performed without requiring the presence of a content document, the present invention can also be applied when, for example, image information is provided alone from the server 4 without the content document. .

It is explanatory drawing which shows the schematic block structure of the service relay apparatus which is embodiment of this invention, and the schematic structure of a server client system using the same. It is a processing flow figure explaining the whole processing concerning the present invention. It is explanatory drawing which shows an example of trimming. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "topleft" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "top" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "topright" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "left" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "center" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "right" is designated as the trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "bottomleft" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "bottom" is designated as a trimming attribute value. It is explanatory drawing which shows the example of arrangement | positioning of the trimming image when "bottomright" is designated as a trimming attribute value. It is a processing flowchart explaining process S90-S100 in an image analysis part, an image process part, and an image transmission part. It is explanatory drawing which shows the example of a trimming layout in case there is one image extraction area | region. It is explanatory drawing which shows the example of a trimming layout in case there is one image extraction area | region. It is explanatory drawing which shows the example of a trimming layout in case there is one image extraction area | region. It is a schematic diagram which shows the example of the trimming layout determination process in case there are two image extraction areas.

Explanation of symbols

  2 service relay device, 4 server, 6 portable information terminal, 10 HTML reception / analysis unit, 12 image acquisition unit, 14 image transmission unit, 20 image size adjustment unit, 22 image analysis unit, 24 image processing unit, 150, 250, 254, 258, 300 Original image, 152, 252, 256, 260, 310 Trimmed image, 302, 304, 306 Partial region.

Claims (9)

An image size adjustment system composed of a transmission side and a reception side,
The transmission side has a transmission means for transmitting a content document describing a trimming instruction together with a screen display content including an image,
The receiving side
Receiving means for receiving the content document;
Obtaining means for obtaining a group of original image information specified in the content document;
Trimming instruction detection means for detecting a trimming instruction specified in the content document;
Image trimming means for trimming an original image represented by original image information indicated as a trimming target in the trimming instruction, and generating trimmed image information including only information on a partial area of the original image;
An image size adjustment system comprising: The image size adjustment system according to claim 1,
When the trimming size for the original image to be trimmed is indicated in the content document, the image trimming means trims the original image to be trimmed so as to be the trimming size. Size adjustment system.   The receiving side includes trimming layout determining means for determining the partial area extracted from the original image to be trimmed in accordance with a trimming type indicating a trimming reference point specified in the content document. The image size adjustment system according to claim 1. The image size adjustment system according to claim 3,
The trimming layout determination means determines the arrangement of the partial area extracted from the original image based on an intra-image distribution of a predetermined pixel attribute of the original image when a trimming type is not indicated in the content document. An image size adjustment system characterized by defining. The trimming layout determining means includes
Means for dividing the original image into a plurality of partial regions;
Means for determining the density of the pixel attributes in each of the partial regions;
Means for selecting the partial region extracted from the original image from the plurality of partial regions based on the density;
5. The image size adjustment system according to claim 4, further comprising:   5. The image size adjustment system according to claim 4, wherein the trimming layout determining unit obtains a barycentric position of the pixel attribute and determines an arrangement of the partial area extracted from the original image based on the barycentric position. . An acquisition means for acquiring a content document describing screen display content including an image and an original image information group specified in the content document;
Trimming instruction detection means for detecting a trimming instruction specified in the content document;
Image trimming means for trimming an original image represented by original image information indicated as a trimming target in the trimming instruction, and generating trimmed image information including only information on a partial area of the original image;
An image size adjusting apparatus comprising: An acquisition step of acquiring a content document describing screen display content including an image and an original image information group specified in the content document;
A trimming instruction detection step for detecting a trimming instruction specified in the content document;
An image trimming step of trimming an original image represented by the original image information indicated as a trimming target in the trimming instruction, and generating trimmed image information including only information on a partial area of the original image;
An image size adjusting method comprising:   A trimming instruction for trimming an original image corresponding to the image and generating trimmed image information including only information on a partial area of the original image, which is a content document describing screen display content including an image A content document characterized by

Images