JP2012063834A - Image display device and method, and computer readable recording medium with program recorded thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply compare partial images which are part of the whole image.SOLUTION: Images A, B to be compared are selected from a filmstrip area 67. The selected images A, B are displayed in an image comparison area 54 in an overlapped manner. By selecting a cutout button 61, a specific range 70 is specified with respect to the upper image B. Display control means performs transparent processing on the outside of the specific range 70 with respect to the upper image B to create a transparent range, and mixes part of the lower image A with the upper image B through the transparent range to display them. When movement of the specific range 70 is instructed with a mouse operation, the display control means performs display so that the image B displayed in the specific range 70 is moved with the specific range.

Description

  The present invention relates to an image display apparatus and method for displaying a plurality of images on the same screen for comparative observation, and a computer-readable recording medium on which a program is recorded.

  Conventionally, there has been proposed an image display method that enables fine comparative observation by designating a reference point for each of a plurality of display images, associating the display images with each other, and performing synchronous display (Patent Document 1).

JP 2000-298467 A

  In the image display method described above, the comparison images are displayed in two fixed windows that are individually arranged on the left and right. For this reason, since it is impossible to bring the images closer to each other than the fixed window interval, it is difficult to determine the comparison between the partial images. In particular, when it is desired to compare some partial images in the entire image, there is a possibility that a detailed comparison cannot be performed because they are too far apart.

  In order to solve the above problems, the present invention provides an image display device and method capable of easily comparing partial images of whole images, and a computer-readable recording medium storing a program. The purpose is to provide.

  In the present invention, range designation means for designating a specific range for the upper image, transmission processing means for creating a transmission range by transmitting the specific image or outside the specific range for the upper image, and the lower image through the transmission range Display control means for mixing and displaying a part of the image on the upper image.

  The range designation means designates the upper image. However, there are cases in which it is desired to specify a lower image. Therefore, a replacement instruction means for instructing to display the lower image on the foreground is provided, and the display control means is configured to display an arbitrary image on the forefront in response to the replacement instruction of the replacement instruction means. Is preferred.

  You may want to move within a specified range. In this case, movement instruction means for moving the specific range may be provided, and the display control means may display the specific range so as to move within the image comparison area in response to the movement instruction. In this case, if the display control unit is configured to display the image displayed in the specific range by moving it together with the specific range, it is preferable because the partial images can be displayed at positions that can be easily compared. is there.

  By the way, when comparing feature areas such as face images, the work of enlarging or reducing the image is a troublesome work. This is because it is necessary to activate or reduce the image for each image window, and it is difficult to adjust both to the same magnification.

  Therefore, an interlock instruction means for instructing the interlocking of the upper image and the lower image and an enlargement / reduction instruction means for instructing enlargement / reduction of the image are provided, and the display control means enlarges / reduces when receiving the interlock instruction. When an instruction is received, the other image may be displayed so as to be enlarged or reduced at the same magnification in conjunction with enlargement or reduction of either the upper image or the lower image.

  In the image comparison area, the position and size of the specific range with respect to the entire image may not be grasped. Therefore, means for displaying the target image area adjacent to the image comparison area, means for displaying a reduced image obtained by reducing a plurality of images displayed in the image comparison area side by side in the image target area, and a mark corresponding to the specific range And a means for displaying a reduced image with the same size for the entire image.

  In the present invention, the specified range specified for the upper image or outside the specified range is transparently processed to create a transparent range, and a part of the lower image is mixed and displayed in the upper image through the generated transmission range. The partial images to be compared in the images can be displayed close to each other, so that the images can be compared easily and reliably.

It is a block diagram which shows the electrical outline of the image display apparatus of this invention. It is a block diagram which shows the outline of the application software part produced | generated by starting a program. It is explanatory drawing which shows a GUI screen (window). It is explanatory drawing which shows the state which displayed the selected image in the image comparison area. It is explanatory drawing which shows a display mode when the cutout button is selected and a specific range is designated. It is explanatory drawing which shows a display mode when a cutout button is selected and a specific range is designated. It is a flowchart which shows the procedure of an image comparison operation | work. It is explanatory drawing which shows the mask process of the drawing part when selecting a cutout button and designating a specific range, (A) is the range which mask-processes with respect to the high-order image B, (B) is a low-order image A The range in which the mask process is performed is described. FIGS. 9A and 9B are explanatory diagrams illustrating mask processing of the drawing unit when movement is performed on the specific range described in FIG. 8, in which FIG. The moving position of the specific range relative to the image A, (C) the range where the masking process is performed on the specific range of the lower image A, (D) the mask processing range of the lower image A, A state in which images in a range are mixed is shown. It is explanatory drawing which shows the GUI screen after the movement process demonstrated in FIG. It is explanatory drawing which shows the mask process of the drawing part when selecting a cutout button and designating a specific range, (A) is the range which mask-processes with respect to the high-order image B, (B) is a low-order image A The range in which the mask process is performed is described. 12A and 12B are explanatory diagrams illustrating mask processing of the drawing unit when movement is performed with respect to the specific range described with reference to FIG. 11, in which FIG. 11A illustrates the position of the lower image A and the specific range after movement, and FIG. The moving position of the specific range with respect to the image B, (C) the range where the lower image A is masked, (D) the mask processing range of the upper image B, and the image of the specific range of the lower image A The mixed state is shown respectively. It is explanatory drawing which shows the GUI screen after the movement process demonstrated in FIG.

  An image display apparatus according to an embodiment of the present invention will be described. As shown in FIG. 1, the image display device 10 includes a CPU 11, a memory 12, a frame memory 13, a display control unit 14, a display unit 15, an input unit 16, I / Fs (interfaces) 17 and 18, a hard disk 19, and the like. These are connected by a bus 20.

  The CPU 11 comprehensively controls each unit. The memory 12 provides a working memory space that can be used by the CPU 11. The display control unit 14 has an LUT (Look Up Table) that determines pixels, converts the display data stored in the frame memory 13 into a display signal for monitoring while referring to the LUT, and displays the display unit 15. Send to.

  The display unit 15 is a CRT monitor, a liquid crystal display, or the like, and displays an image based on a display signal obtained from the display control unit 14. The hard disk 19 is a recording medium for installing a program for realizing the image display apparatus of the present invention, a recording medium for storing image data, and a recording medium for recording various other information. It is connected to the bus 20 via / F17. The frame memory 13 stores display data to be displayed on the display unit 15.

  The input unit 16 includes a keyboard and a mouse for inputting various instructions. The I / F 18 is an interface for taking in image data stored in an external device such as an electronic camera 23 to the hard disk 19 via a connection cable 22 connected to the connection terminal 21.

  The CPU 11 executes a program (application software) installed in the hard disk 19 to generate a GUI (graphical user interface) compatible application software unit 25 as shown in FIG. The application software section 25 is roughly divided into a window drawing information management section 26, an input section 27 for instructing various processing contents, and a drawing section 28 for storing window contents generated according to instructions from the input section 27 in the frame memory 13. Consists of.

  The input unit 27 includes an image reading instruction unit 30, a release instruction unit 31, a full release instruction unit 32, a cancellation instruction unit 33, a cutout instruction unit 34, a cutout instruction unit 35, a replacement instruction unit 36, a movement instruction unit 37, and an interlocking instruction unit. 38, an enlargement / reduction instruction unit 39, a selection unit 40, and the like. The instruction units 30 to 39 and the selection unit 40 are associated with various buttons (buttons displayed graphically on the screen) constituting the GUI. .

  The window drawing information management unit 26 stores image window drawing information, button drawing information, and the like for displaying application software windows, images, thumbnail images, and the like. The drawing unit 28 includes an image processing unit 42, a transparency processing unit 43, a window drawing processing unit 41, and the like for processing an image displayed on the image window in response to an event input from the input unit 27. .

  The window drawing processing unit 41 generates window contents based on information stored in the window drawing information management unit 26.

  The image processing unit 42 performs processing such as image movement, enlargement, reduction, or composition, incorporates the processed image into the window content, generates the final display window content, and displays the display window content as a frame. Store in the memory 13.

  The transmission processing unit 43 creates a transmission range by masking a specific range specified for the image or outside the specific range according to a specific mask pattern stored in the mask pattern storage unit 44, and transmits information on the transmission range. The image is sent to the image processing unit 42. The image processing unit 42 performs a process of synthesizing a part of the lower image that is covered by the transmission range with the transmission range of the upper image.

  As shown in FIG. 3, the window content displays a window 53 having a title bar 50, a menu bar 51, a tool bar 52, and the like and a plurality of frames 54 to 56 partitioning the window 53, and each event is displayed. The buttons (icons) 57 to 66 for execution are displayed on the toolbar 52.

  In FIG. 3, application software names displayed on the title bar 50, menu names displayed on the menu bar 51, and the like are omitted in order to reduce complexity of the drawing. Further, in the diagrams of the operation screens from FIG. 4 onward, the title bar 50 and the menu bar 51 are not shown in order to reduce the complexity of the drawing.

  The plurality of frames 54 to 56 includes an image comparison area 54, a target image area 55, a filmstrip area 56, and the like. The film strip area 56 is an area in which a plurality of image files stored at a predetermined address in a recording unit such as the hard disk 19 are displayed side by side as thumbnail images 67a to 67z. The image file stores thumbnail image data and main image data. If no thumbnail image is stored in the image file, the main image is read out to create and display a thumbnail image.

  As shown in FIG. 4, the image comparison area 54 displays the main images A and B of image data corresponding to the thumbnail images 67c and 67d selected in the film strip area 56 in the image windows 45 and 46, respectively. Area. In the image comparison area 54, the two images A and B are partially overlapped with the first selected image A as the lower image and the later selected one as the upper image B so that the images can be easily compared. The display is shifted depending on the status. Note that it is preferable to display the image windows 45 and 46 in different colors according to the upper and lower positions because it is easy to grasp. In the image comparison area 54, as shown in FIG. 5, image clipping or clipping range designation (clipping), that is, designation of a specific range 70 is performed.

  The target image area 55 is an area for displaying reduced images obtained by reducing the two selected images A and B in the image windows 47 and 48, respectively. In this target image area 55, in response to designating the specific range 70 in the image comparison area 54, the position and size of the mark 70a corresponding to the specific range 70 in the image comparison area 54 with respect to the entire image is displayed. Displayed in the same way.

  The comparison target image can be selected by dragging and dropping the thumbnail image 67 from the film strip area 56 to the image comparison area 54 with the mouse. This screen operation constitutes the image reading instruction unit 30, and the image reading instruction unit 30 reads an instruction to read the main image corresponding to the selected thumbnail image 67 and display it in the image comparison area 54 to the drawing unit 28. Do it.

  In response to designating the specific range 70, the cutout (trimming) button 61 transmits the upper image B outside the specific range 70 and displays a part of the lower image A through the transmitted range. This is an operation button and constitutes the cutout instruction unit 35 described with reference to FIG.

  As shown in FIG. 6, the cutout (drill) button 62 transmits the inside of the specific range 70 with respect to the upper image B in response to designating the specific range 70, and passes through the transmitted range of the lower image A. This is an operation button for displaying a part, and constitutes the cutout instruction unit 34 described with reference to FIG.

  The specific range 70 can be specified by specifying a start point and an end point by, for example, dragging the mouse in the image comparison area 54 and surrounding an arbitrary range. The enclosed area is displayed as a rectangular frame. The specific range 70 is changed in size by dragging the corner of the rectangular frame in the diagonal direction with the mouse, and changed in position by dragging the upper, lower, left or right side of the rectangular frame with the mouse. Can do. The enclosing frame for designating the specific range 70 is not limited to a rectangle but may be a circle, an ellipse, a triangle, or the like. In this case, it is desirable that the mark 70a is adjusted to the specific range 70.

  The replacement button 60 is a button for instructing to display the lower image A in the foreground, and constitutes the replacement instruction unit 36 described with reference to FIG. The selection button 59 selects one of the two images A and B by clicking the mouse, thereby making the selected image an active image. An active image is always displayed in the foreground in the image comparison area 54.

  The slide button 64 is a button for instructing an image to be enlarged or reduced with respect to an active image by moving the knob 64a along the slide bar 64b by a mouse operation, according to the moving amount and moving direction thereof. The enlargement / reduction instruction unit 39 described with reference to FIG. The move button 63 is a button for freely moving an active image in the image comparison area 54 by a mouse drag operation, and constitutes the move instruction unit 37 described with reference to FIG.

  The interlocking button 66 constitutes the interlocking instruction unit 38 shown in FIG. 2, and the display is switched between “ON” and “OFF” each time the mouse is clicked. The upper image B and the lower image A are interlocked when “ON” is displayed, and the interlock is canceled when “OFF” is displayed. The interlock button 66 is used in combination with the movement button 63 and the slide button 64. When used in combination with the move button 63, the upper image B and the lower image A can be moved together, and when used in combination with the slide button 64, the upper image B and the lower image A can be enlarged or reduced together. Can be reduced.

  The cancel button 65 is displayed with an “x” button and is a button for canceling an instruction immediately before the designation of the specific range 70 and the like, and constitutes the cancel instruction unit 33 described with reference to FIG. The cancel button 58 is a button for canceling the selection of an active image and deleting the display of the image from the image comparison area 54, and constitutes the cancel instruction unit 31 described with reference to FIG. The all cancel button 57 is a button for canceling the selected image and deleting the display of the two images A and B from the image comparison area 54, and constitutes the all cancel instruction unit 32 described with reference to FIG.

  Next, the overall procedure of the image comparison work will be described using the operation screen that constitutes the GUI described above. First, select any two images and display them in the image comparison area 54, and visually check whether the characteristic partial images in the two images satisfy the requirements such as focus, subject blur, and contrast. The image which is judged and satisfied is left in the image comparison area 54, and the image which is not satisfied is deleted from the image comparison area 54. Thereafter, a new image is selected and the new image is compared again with the satisfied image. In this way, new images are sequentially compared with the satisfied image, and finally the most satisfied image is searched.

  Specifically, referring to FIG. 7, when the program is started (S-1), a window 53 is opened and the operation screen described in FIG. 3 is displayed. In the film strip area 56 of the window 53, thumbnail images 67a to 67z of image files stored at a predesignated address in the storage means such as the hard disk 19 are displayed.

  If not all thumbnail images can be displayed in the filmstrip area 56, a scroll bar appears at the bottom or right end of the filmstrip area 56. All thumbnail images are displayed in order in the filmstrip area 56 by moving the scroll bar by a mouse operation.

  Two images to be compared are dragged and dropped from the filmstrip area 56 to the image comparison area 54 by a mouse operation (S-2). The image reading instruction unit 30 instructs the drawing unit 28 on the address of the read image based on the drag-and-drop operation.

  The drawing unit 28 reads the selected image and, as shown in FIG. 4, the image A that has been dropped first is a lower image, the image B that has been dropped later is a higher image B, and a part of them overlaps The window contents are generated so that the two images A and B are shifted and displayed in the image comparison area 54, and the reduced images of these images A and B are individually displayed in the target image area 55. At this time, the position and size information of the image windows 45 and 46 of the images A and B are determined in advance by the window drawing processing unit 41. Here, when it is desired to replace the image displayed on the foreground, the lower image A is displayed on the foreground by clicking the replacement button 60 with the mouse (S-3, S-4).

  FIG. 4 shows an example in which continuous similar images A and B are selected from a plurality of images obtained by continuously shooting a traveling train at the same place.

  When performing image comparison, a specific range designation (S-5) by the cutout button operation and a specific range designation (S-6) by the cutout button operation are alternatively selected. When the former is selected, transmission processing is performed outside the specific range in the upper image B. When the latter is selected, a transparent process is performed within a specific range in the upper image B.

  The selection of the specific range (S-5) by the cut button operation can be performed by clicking the cut button 61 with the mouse operation. Thereafter, the specific range 70 is designated for the range including the partial image to be compared in the upper image B by dragging the mouse, so that the cutout instruction unit 35 sends the image processing unit 42 the image comparison area 54. Information on the position of the specific range 70 is sent, and the image processing unit 42 instructs the transmission processing unit 43 to execute a process that transmits outside the specific range 70.

  As shown in FIG. 8A, the transmission processing unit 43 creates a transmission range 71 by masking the upper image B outside the specific range 70 (S-7). Further, as shown in FIG. 5B, a transparent range 72 is created by subjecting the lower image A to a range overlapping with the specific range 70 (a hatched range) by transparent processing (S-8). The image processing unit 42 mixes and displays the image of the lower image A other than the transmission range 72 in the image of the transmission range 71 of the upper image B (S-9). As a result, as shown in FIG. 5, the image within the specific range 70 of the upper image B is displayed so as to overlap the lower image A.

  In the reduced image B displayed in the target image area 55, in response to the specification of the specific range 70, a mark 70a having the same position and size with respect to the specific range 70 and the entire image is displayed. By displaying the mark 70a in the target image area 55, when the image is enlarged or reduced in the image comparison area 54, the position and size of the specific range 70 with respect to the entire image can be easily grasped.

  The partial image b in the specific range 70 in the upper image B is compared with the partial image to be compared in the lower image A. However, it is difficult to compare when the partial images are separated from each other. Therefore, when the partial image b in the specific range 70 is to be displayed close to the partial image in the lower image A, the partial image b in the specific range 70 may be moved.

  In this case, the interlock button 66 is clicked with the mouse to select “OFF”. Thereafter, the move button 63 is clicked by a mouse operation, and for example, as shown in FIG. 9A, the specified range 70 is clicked by the mouse and dragged to an arbitrary position, for example, the position of the reference numeral 70 ′. . Thus, the upper image B including the partial image b displayed in the specific range 70 is moved together with the specific range 70 as shown in FIG. When the position of the specific range 70 ′ with respect to the image comparison area 54 is determined, the transmission process is performed on the range overlapping the specific range 70 ′ with respect to the lower image A as described above, as shown in FIG. Then, a transmission range 75 is generated, and the partial image b in the specific range 70 of the upper image B is mixed and displayed in the transmission range 75 of the lower image A as shown in FIG.

  FIG. 10 shows a state in which the partial image b in the specific range 70 of the upper image B is displayed beside the partial image of the lower image A by the moving procedure described above. In this way, by moving the partial image b displayed in the specific range 70 of the upper image B to the lower image A to a position where it can be easily compared, the comparison operation (S-11) of the partial images is simplified. Can be done. At this time, the mark 70 a displayed in the target image area 55 is also moved and displayed in response to the movement of the specific range 70.

  When the movement button 63 is selected with the interlocking button 66 displayed as “ON” and moved by the mouse operation as described above, the lower image A and the upper image B are in a positional relationship and in the image comparison area 54. Move together keeping the size. Further, when the interlock button 66 is displayed as “ON” and the knob 64a of the slide button 64 is slid, the lower image A and the partial image b displayed in the specific range 70 are enlarged or reduced on the same scale. By this operation, it is possible to compare to a fine part.

  After completing the image comparison operation, there is a case where it is desired to give an evaluation to the image. In this case, a rating operation is performed (S-12). In this operation, for example, a thumbnail image 67 to be evaluated in the film strip area 56 is selected by a mouse operation, and an evaluation mark is selected from a right-click menu of the mouse. The evaluation mark is displayed on the thumbnail image 67 in the film strip area 56 with, for example, a mark “◯”, and the information is stored in the corresponding image file. In this way, only images to which evaluation marks have been added can be selected later, and only images to which evaluation marks have been added can be displayed in the film strip area 56.

  When the image comparison is finished, the program is finished (S-13). When the image comparison operation is to be continued, the unsatisfactory image is activated and the release button 58 is clicked by the mouse operation to delete the unsatisfactory image display from the image comparison area 54. A new image is selected from the film strip area 56 and displayed. If two images are to be deleted, all release button 57 may be clicked with the mouse.

  Next, the specific range designation (S-6) by the cut button operation will be described. For this selection, the cutout button 62 may be clicked with a mouse operation. Thereafter, by designating the specific range 70 with respect to the upper image B by dragging the mouse, the transparency processing unit 43 masks the specific range 70 with respect to the upper image B as shown in FIG. Thus, a transmission range 77 is created (S-15). Further, as shown in FIG. 7B, a transmission range (a range indicated by hatching) 78 is applied to the lower image A except for the specific range 70 in the range overlapping the upper image B. Is created (S-16). The image processing unit 42 mixes and displays an image of the lower image A other than the transmission range 78 in the transmission range 77 of the upper image B (S-17). As a result, as shown in FIG. 6, the partial image a overlapping the specific range 70 of the lower image A is transparently displayed within the specific range 70 of the upper image B.

  In the reduced image A displayed in the target image area 55, in response to the specification of the specific range 70, a mark 70a having the same position and size with respect to the specific range 70 and the entire image is displayed. In the reduced image B, a mark 70b indicating a position for displaying an image in the specific range 70 is displayed. These marks 70a and 70b are suitable because they are easy to grasp if they are made different marks such as a dotted line and a solid line.

  When the partial image a is moved to a position where it can be easily compared, the interlock button 66 is clicked with the mouse to select “OFF”. Thereafter, the move button 63 is clicked by a mouse operation, and, for example, as shown in FIG. 12A, the specified range 70 is clicked by the mouse, and an arbitrary position, for example, the position indicated by the reference numeral “70 ′” Drag to. Thereby, the lower image A including the partial image a displayed in the specific range 70 is moved together with the specific range 70.

  When the movement position of the specific range 70 ′ with respect to the image comparison area 54 is determined, as shown in FIG. 5B, the upper image B is subjected to the transmission process in the same manner as described above for the range overlapping the specific range 70 ′. Then, a transmission range 80 is generated, and, as shown in FIG. 5C, a range other than the specific range 70 in the range overlapping the upper image B with respect to the lower image A is subjected to a transmission process. 81 is created.

  Then, as shown in FIG. 4D, an image other than the transmission range 81 of the lower image A is mixed and displayed on the transmission range 80 of the upper image B. Thereby, as shown in FIG. 13, the partial image a of the lower image A can be displayed on the upper right of the partial image of the upper image B. At this time, in the target image area 55, the mark 70b displayed in the reduced image B is moved in the same manner as the movement of the specific range 70 described above compared to the mark 70b described in FIG.

  In the above embodiment, only one specific range 70 is specified for an image, but a plurality of specific ranges 70 may be specified. In this case, it is preferable to display the same number of marks on the reduced image.

DESCRIPTION OF SYMBOLS 10 Image display apparatus 25 Application software part 27 Input part 28 Drawing part 54 Image comparison area 55 Target image area 61 Cutout button 62 Cutout button 70 Specific range A Lower image B Upper image

Claims (9)

In an image display device that displays a plurality of images superimposed on a single image comparison area,
Range designation means for designating a specific range for the upper image, transmission processing means for creating a transmission range by transmitting the specific range or outside the specific range for the upper image, and a lower image of the lower image through the transmission range An image display device comprising: display control means for displaying a part of the upper image mixed with the display control means. The image display device according to claim 1,
Comprising replacement instruction means for displaying the lower image in the foreground,
The range display means specifies the specific range with respect to an image displayed in the foreground. The image display device according to claim 1 or 2,
A movement instructing unit for instructing movement of the specific range within the image comparison area is provided, and the display control unit displays an image displayed in the specific range so as to move together with the specific range. An image display device. The image display device according to any one of claims 1 to 3,
Linkage instruction means for instructing the linkage of the upper image and the lower image, and enlargement / reduction instruction means for instructing enlargement / reduction with respect to either one of the upper or lower images, and the display control means When receiving an instruction to enlarge or reduce an image while receiving an interlocking instruction, the other image is enlarged or reduced to the same magnification in conjunction with the enlargement or reduction of either the upper image or the lower image. An image display device characterized by performing display. The image display device according to any one of claims 1 to 4,
Means for displaying an image target area adjacent to the image comparison area; means for displaying thumbnail images obtained by reducing the plurality of images side by side in the image target area; and a mark corresponding to the specific range in the thumbnail image. An image display device comprising: a display unit configured to display the same size with respect to the entire image. In an image display method for displaying a plurality of images superimposed on a single image comparison area,
A step of designating a specific range for the upper image; a step of creating a transmission range by transmitting the specific range or outside the specific range to the upper image; and a part of the lower image through the transmission range; And a display control step of displaying the mixed image in the upper image. The image display method according to claim 6,
An image including a step of instructing movement of the specific range within the image comparison area, wherein the display control step displays the image displayed in the specific range so as to move together with the specific range. Display method. The image display method according to claim 6 or 7,
A step of instructing the interlocking of the upper image and the lower image, and a step of instructing enlargement or reduction of either one of the upper or lower image, wherein the display control step receives the interlocking instruction. When an instruction to enlarge or reduce the image is received, the other image is displayed to be enlarged or reduced at the same magnification in conjunction with the enlargement or reduction of either the upper image or the lower image. An image display method characterized by the above.   A computer-readable recording medium having recorded thereon a program for causing a computer to implement the image display method according to claim 6.

Images