JP5799715B2 - Image transition apparatus, image transition method, and program - Google Patents

Description

  The present invention relates to an image transition apparatus, an image transition method, and a program for transitioning a displayed screen.

  As a method for displaying an image on an image display device such as a photo frame or a PC, there is a slide show for sequentially displaying a plurality of images. There are various image transition methods for switching from the current image to the next image, such as methods called slide, wipe, zoom, and fade.

  Patent Document 1 discloses an image display method capable of displaying a reduced image or an image in which a part of the image is thinned out in a partial area in the display screen without giving the viewer a sense of incongruity. Yes. In Patent Document 1, an image for each frame represented by an input video signal is displayed in a first area in the display screen, and the image displayed in the first area is radially expanded toward the display screen frame. The radial image pattern is displayed in the second area in the display screen.

  Patent Document 2 discloses a virtual space window display system that sets an arbitrary time axis in a virtual space and displays the window on the corresponding time axis according to the time when each window is recorded and stored. In Patent Literature 2, a window to be displayed on the time axis is displayed so as to converge to a vanishing point in the depth direction based on a perspective projection method according to a distance from the user's viewpoint.

  Patent Document 3 discloses an image processing system that combines two image data so that they are displayed side by side.

In Patent Document 4, the display position of a selected thumbnail serving as a display reference is determined, and the distance from the display position of the selected thumbnail is longer between the display position of the selected thumbnail and the vanishing point set on the display screen. A thumbnail display method is disclosed in which the size and display position of a non-selected thumbnail is calculated and displayed on a display unit so that the reduction ratio is increased.

  In addition, there are images having vanishing points, which are points that intersect when parallel lines in real space are not parallel on the image, such as a picture expressed by a perspective method or a photograph of a building with a depth.

  Patent Document 5 discloses a vanishing point estimation device that can stably estimate the position of a vanishing point without increasing the amount of calculation even when only a single straight line is detected from a captured image. .

  Non-Patent Literature 1 discloses a vanishing point detection method for architectural images.

JP 2009-162899 A Japanese Patent Laid-Open No. 10-320167 JP 2008-193469 A JP 2007-272701 A JP 2011-22959 A

Shunsuke Yamanaka, Naoki Kato, Katsuki Fujisawa, “Development of vanishing point detection method of architectural image and reconstruction method of 3D architectural model based on it”

  However, image transition methods such as slide, wipe, zoom, and fade are methods that can be realized regardless of the image to be displayed. It is less interesting to change the image having the vanishing point as described above using these methods.

  The image display methods described in Patent Documents 1 to 4 are not methods for switching images. The technique described in Patent Document 5 does not display an image.

  The present invention has been made in view of the circumstances as described above, and when displaying an image having a vanishing point, the image transition can be performed based on the vanishing point, and the image transition has an interesting match with the characteristics of the image. An object of the present invention is to provide an image transition apparatus, an image transition method, and a program capable of realizing the above.

The image transition apparatus according to the present invention is
Image acquisition means for acquiring two or more images including a first image and a second image;
Image display means for displaying an image;
If it is determined whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image , After displaying an image obtained by combining the second image with the enlargement ratio at the position of the one vanishing point of the first image, the second image with a second enlargement ratio larger than the first enlargement ratio is displayed. a display the synthesized image to the position of one of the vanishing point of the first image while indicating display the image slide into successively larger al, an image changing means for shifting to a state where the second image is displayed,
It is characterized by providing.

  According to the present invention, when an image having a vanishing point is displayed, an image transition can be performed based on the vanishing point, and an interesting image transition that matches the characteristics of the image can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the image transition apparatus which concerns on embodiment of this invention, (a) is a figure which shows the external appearance of the photo frame which is an example of an image transition apparatus, (b) shows the structural example of an image transition apparatus. It is a block diagram. 6 is a flowchart illustrating an example of an image display operation in a case where there is at least one vanishing point in the first image in the image transition device according to the first embodiment. 6 is a flowchart showing an example of an operation of vanishing point transition A according to the first embodiment. (A) And (b) is a figure explaining the line setting of vanishing point transition A. FIG. (A)-(c) is a figure explaining the expansion of the display area which displays the 2nd image of vanishing point transition A. FIG. (A)-(d) is a figure explaining reduction | decrease of the 1st image of the vanishing point transition A. FIG. (A) And (b) is a figure explaining the reduction method when a 2nd image and a display area are not similar. 6 is a flowchart showing an example of an operation of vanishing point transition B according to the first embodiment. (A) And (b) is a figure explaining the line setting of vanishing point transition B. FIG. (A) And (b) is a figure explaining the expansion of the display area which displays the 2nd image of vanishing point transition B. FIG. (A)-(d) is a figure explaining reduction | decrease of the 1st image of the vanishing point transition B. FIG. 10 is a flowchart illustrating an example of an image display operation when there is at least one vanishing point in the first image and / or the second image in the image transition apparatus according to the second embodiment. (A) And (b) is a figure explaining vanishing point transition when at least one vanishing point exists in the 1st picture and the 2nd picture. It is a flowchart which shows an example of the operation | movement of vanishing point transition when there exists at least 1 vanishing point in a 1st image and a 2nd image. (A) And (b) is a figure explaining the example in case a 1st image and a 2nd image are different figures. It is a figure which shows an example of the hardware constitutions of the image transition apparatus which concerns on embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are denoted by the same reference numerals.

(Embodiment 1)
The image transition apparatus 1 according to the first embodiment is an apparatus capable of displaying an image such as a PC or a mobile phone in addition to the photo frame shown in FIG. As shown in FIG. 1B, the image transition apparatus 1 includes an image acquisition unit 11, a storage unit 12, a vanishing point acquisition unit 13, an image transition unit 14, and an image display unit 15 as functional configurations.

  The image acquisition unit 11 acquires two or more images to be displayed on the image display unit 15. This image may be received from the outside, input by the user, or read from a recording medium. Alternatively, the storage unit 12 may store images in advance.

  The storage unit 12 stores two or more images acquired by the image acquisition unit 11.

  The vanishing point acquisition unit 13 analyzes two or more images stored in the storage unit 12 and detects a vanishing point. The vanishing point detection method uses an existing method such as a method of detecting a straight line in an image and detecting the vanishing point from the position of the intersection (see Non-Patent Document 1). Hereinafter, a straight line having the vanishing point as an intersection is referred to as a vanishing line. The vanishing point acquisition unit 13 sends, to each image, vanishing point information indicating whether there is a vanishing point and, if there is a vanishing point, the vanishing point information. The external server may detect the vanishing point of the image, and the vanishing point acquisition unit 13 may receive the vanishing point information from the server.

  Based on the vanishing point information, the image transition unit 14 determines whether or not there is at least one vanishing point in an image currently displayed on the image display unit 15 (hereinafter referred to as a first image). The image transition unit 14 determines an image transition method depending on whether or not there is at least one vanishing point in the first image, and sends an instruction to the image display unit 15.

  The image display unit 15 sequentially displays two or more images stored in the storage unit 12 in accordance with instructions from the image transition unit 14. Note that the images stored in the storage unit 12 may not have the same shape and size.

  An example of the image display operation when there is at least one vanishing point in the first image will be described using the flowchart of FIG. The image transition device 1 starts processing of the image display 1 shown in FIG. 2 when the power is turned on or when a command for instructing image display is received from the outside.

  First, the image acquisition unit 11 of the image transition apparatus 1 acquires two or more images to be displayed on the image display unit 15. (Step S11). The storage unit 12 stores two or more images acquired by the image acquisition unit 11. The vanishing point acquisition unit 13 analyzes all the two or more images stored in the storage unit 12 and detects the vanishing point (step S12). The vanishing point acquisition unit 13 sends the vanishing point information to the image transition unit 14. The vanishing point acquisition unit 13 may temporarily store the vanishing point information in the storage unit 12, or may detect the vanishing point of the image every time the image display unit 15 displays an image.

  The image display unit 15 displays the first image among the two or more images stored in the storage unit 12 (step S13). The first image may be designated by the user or may be selected at random. Alternatively, the first image may be a one-color image such as white or black. Further, the display of the first image may be executed, for example, as a trigger when the user inputs a slide show start instruction to the image transition apparatus 1, or as a trigger when the image acquisition unit 11 acquires an image. May be executed as

  The image transition unit 14 determines whether or not there is at least one vanishing point in the first image based on the vanishing point information (step S14). If there is a vanishing point in the first image (step S14; YES), a screen transition method based on the vanishing point (hereinafter referred to as vanishing point transition) is selected (step S15). If there is no vanishing point in the first image (step S14; NO), the image transition unit 14 selects another image transition method (step S16). Other image transition methods are existing image transition methods that do not depend on the characteristics of an image to be displayed, such as slide, wipe, zoom, and fade.

  The image display unit 15 starts image transition from the first image to the image to be displayed next (hereinafter referred to as the second image) by the image transition method selected by the image transition unit 14 (step S17). The image transition unit 14 determines whether the image transition is completed (step S18). If the image transition is not completed (step S18; NO), step S18 is repeated. When the image transition is completed (step S18; YES), the image transition unit 14 determines whether there is an image to be displayed next (step S19). If there is an image to be displayed next (step S19; YES), the process returns to step S14, and steps S14 to S19 are repeated. If there is no image to be displayed next (step S19; NO), the process is terminated.

  Subsequently, the vanishing point transition A which is an example of the vanishing point transition will be described with reference to the flowchart of FIG. 3 and FIGS. 4 to 6. Here, an example is used in which the first image and the second image are the same rectangle, and the display area for displaying the second image is also a rectangle. The vanishing point transition A is one of image transition methods in which the display area in which the second image is displayed from the vanishing point of the first image gradually expands to transition from the first image to the second image.

  When the image display unit 15 receives an instruction to start the process of the vanishing point transition A from the image transition unit 14, the image display unit 15 starts the process of the vanishing point transition A illustrated in FIG. A first image PI as shown in FIG. 4A is displayed on the image display unit 15. As shown in FIG. 4B, the image display unit 15 displays the second image with the four vanishing lines detected when the vanishing point acquisition unit 13 detects the vanishing point Va of the image. The straight lines (hereinafter referred to as lines) La1 to La4 that serve as guides for enlarging the area are set (step S21). Lines La1 to La4 are straight lines extending from the vanishing point Va to the outer frame of the second image. Here, since the first image PI and the second image NI have the same quadrangle, the outer frames match.

  As will be described later, the line is a line that defines the shape of the display area. Therefore, when the display area is a quadrangle and there are four or more vanishing lines, four of them are set as lines. That is, if the image is an N-gon, N lines are set. If the image is an ellipse, two lines may be set. In addition, you may set not only a vanishing line but the arbitrary straight line extended radially from a vanishing point to a line.

  As shown in FIG. 5A, the image display unit 15 forms a display area Sa in which the vertices Pa1 to Pa4 are on the lines La1 to La4, respectively, on the first image PI. The display area Sa is (distance a21 from the vanishing point Va to the vertex Pa1 / distance a11 from the vanishing point Va to the intersection of the line La1 and the side of the second image) = (distance a22 / from the vanishing point Va to the vertex Pa2). The distance a12 from the vanishing point Va to the intersection of the line La2 and the side of the second image = (distance a23 from the vanishing point Va to the vertex Pa3) / from the vanishing point Va to the intersection of the line La3 and the side of the second image Distance a13) = (Distance a24 from vanishing point Va to vertex Pa4 / Distance a14 from vanishing point Va to the intersection of line La4 and the side of the second image). The display area Sa expands so that the vertex Pa1 to the vertex Pa4 move on the lines La1 to La4, respectively, so as to satisfy this equation E1.

  FIG. 5A is an example of the display area Sa that is being enlarged. First, as shown in FIG. 5B, the image display unit 15 forms a minimum display area Sa that satisfies the above-described equation E1 (step S22). The minimum display area Sa may be the minimum display area Sa based on the display function, or may be an arbitrarily set minimum display area Sa.

  Next, as shown in FIG. 5C, the image display unit 15 gradually moves the lines La1 to La4 so as to be diagonal lines of the second image (step S23). Along with this, the intersection of the lines La1 to La4 moves from the vanishing point Va to the center M of the second image. At the same time, the image display unit 15 expands the display area Sa by moving the vertices Pa1 to Pa4 on the lines La1 to La4, respectively, and displays the second image in the display area Sa (step S24). The second image may be reduced according to the shape of the display area Sa and displayed as a whole, or a portion corresponding to the position of the display area Sa on the second image may be cut out and displayed. Details of the reduction method when the second image and the display area Sa are not similar will be described later.

  Further, as shown in FIG. 6, the image display unit 15 reduces the first image PI in accordance with the enlargement of the display area Sa (step S25). As shown in FIG. 6A, the first image PI is divided into images F1 to F4 by the display area Sa and the lines La1 to La4. By enlarging the display area Sa, the images F1 to F4 are compressed in the direction perpendicular to the sides of the first image PI. Further, the line La1 to La4 is moved to be deformed in a direction parallel to the side of the first image PI. Taking the image F1 as an example, the state of compression / deformation is shown in FIGS. In FIGS. 6B to 6D, the display area Sa is enlarged in the vertical direction with respect to the lower side of the first image PI, and the lower side of the first image PI is moved by the movement of La2 and La3. Are deformed in parallel.

  The reduction method of the first image PI is not limited to this. For example, the first image PI is deformed in the direction parallel to the sides of the first image PI by moving the lines La1 to La4, and each of the first images PI is enlarged by expanding the display area Sa. It may be moved in a direction perpendicular to the side, and a portion protruding from the side of the first image PI may be deleted. In this case, the first image PI is pushed out by enlarging the display area Sa on which the second image is displayed, and interesting image transition can be realized. Alternatively, the display area Sa of the first image PI may be erased by enlarging the display area Sa without compressing or deforming the first image PI.

  When the first image PI is still displayed (step S26; NO), the image display unit 15 returns to step S23 and repeats steps S23 to S26. When the display area Sa matches the outer frame of the second image and only the second image is displayed (step S26; YES), the image display unit 15 ends the process.

  Here, a reduction method when the second image and the display area Sa are not similar will be described. As shown in FIG. 7A, when the second image NI and the display area Sa are not similar, first, a reference line BL1 extending from an arbitrary reference point BP1 to the side of the image is set in the second image NI. In the example of FIG. 7A, the reference point is the center of the second image NI, and the reference line is a straight line extending from the center to the vertex in the second quadrant. Here, the point X2 in the display area Sa corresponding to the point X1 on the line of the angle θ from the reference line BL1 in the second image NI is obtained.

  A reference point BP2 corresponding to the reference point BP1 and a reference line BL2 corresponding to the reference line BL1 are set in the display area Sa. A point on the line of the angle θ from the reference line BL2, “a distance d1 from the reference point BP1 to the point X1 d1 / a distance d2 from the point X1 to the side of the second image NI = a distance d3 from the reference point BP2 to the point X2” / The point X2 is determined so as to satisfy the equation “distance d4 from the point X2 to the side of the display area Sa”. In this way, the points on the second image NI are made to correspond to the points on the display area Sa, and the second image NI is reduced in accordance with the shape of the display area Sa.

  As shown in FIG. 7B, when the image is an ellipse, the second image NI can be similarly reduced in accordance with the shape of the display area Oa. First, a reference line BL3 extending from the arbitrary reference point BP3 to the circumference of the image is set in the second image NI. In the example of FIG. 7B, the reference point is the center of the second image NI, and the reference line is a straight line extending from the center to the midpoint of the arc of the second quadrant. Here, the point X4 in the display area Oa corresponding to the point X3 on the line of the angle θ from the reference line BL3 in the second image NI is obtained.

  A reference point BP4 corresponding to the reference point BP3 and a reference line BL4 corresponding to the reference line BL3 are set in the display area Oa. A point on the line of the angle θ from the reference line BL4, “a distance d5 from the reference point BP3 to the point X3 / a distance d6 from the point X3 to the circumference of the second image NI = a distance from the reference point BP4 to the point X4” The point X4 is determined so as to satisfy the equation “d7 / the distance d8 from the point X4 to the circumference of the display area Oa”. In this way, the points on the second image NI are made to correspond to the points on the display area Oa, and the second image NI is reduced in accordance with the shape of the display area Oa.

  As shown in FIG. 7A, when the second image NI and the display area Sa are rectangular, the second image NI is reduced in accordance with the shape of the display area Sa by changing the aspect ratio. May be. Alternatively, regardless of the shape of the image, a transformation matrix for projective transformation may be stored in advance in the storage unit 12, and the second image NI may be projected using this.

  Subsequently, the vanishing point transition B which is an example of the vanishing point transition will be described with reference to the flowchart of FIG. 8 and FIGS. 9 to 11. In this example, the first image PI and the second image NI are the same rectangle, and the display area for displaying the second image NI is also a rectangle. The vanishing point transition B is one of image transition methods in which the display area where the second image NI is displayed is gradually enlarged from the vanishing point of the first image PI, thereby transitioning from the first image PI to the second image NI. It is.

  When the image display unit 15 receives an instruction to start the process of the vanishing point transition B from the image transition unit 14, the image display unit 15 starts the process of the vanishing point transition B illustrated in FIG. An image as shown in FIG. 9A is displayed on the image display unit 15. As shown in FIG. 9B, the image display unit 15 sets straight lines from the vanishing point Va of the first image PI to the four vertices of the second image NI to the lines La1 to La4 (step S31). Here, since the first image PI and the second image NI are the same rectangle, the four vertices coincide.

  First, as shown in FIG. 10A, the image display unit 15 displays a minimum display area Sa having vertices Pa1 to Pa4 on the lines La1 to La4 and similar to the first image PI (see FIG. 10A). Step S32). The minimum display area Sa may be the minimum display area Sa based on the display function, or may be an arbitrarily set minimum display area Sa.

  Next, as shown in FIG. 10B, the image display unit 15 moves the vertex Pa <b> 1 to the vertex Pa <b> 4 on the lines La <b> 1 to La <b> 4 to enlarge the display region Sa, and the second image is displayed on the display region Sa. NI is displayed (step S33). In the vanishing point transition B, since the second image NI and the display area Sa are necessarily similar in shape, the second image NI may be reduced to the size of the display area Sa, and the entire image may be displayed. A portion corresponding to the position of the display area Sa on the image NI may be cut out and displayed. In addition, since the display area Sa is similar to the second image NI, the above-described equation E1 is satisfied.

  Further, as shown in FIG. 11, the image display unit 15 reduces the first image PI in accordance with the enlargement of the display area Sa (step S34). As shown in FIG. 11A, the first image PI is divided into images F5 to F8 by the display area Sa and the lines La1 to La4. By enlarging the display area Sa, the images F5 to F8 are compressed in the direction perpendicular to the sides of the first image PI. Since the lines La1 to La4 do not move, they do not change in the direction parallel to the sides of the first image PI. FIGS. 11B to 11D show how the image F5 is deformed. In FIGS. 11B to 11D, the display area Sa is enlarged and compressed in the direction perpendicular to the lower side of the first image PI, and does not change in the direction parallel to the lower side of the first image PI. . Similar to the vanishing point transition A, the reduction method of the first image PI is not limited to this.

  When the first image PI is still displayed (step S35; NO), the image display unit 15 returns to step S33 and repeats steps S33 to S35. When the display area Sa matches the outer frame of the second image NI and only the second image NI is displayed (step S35; YES), the image display unit 15 ends the process.

  In the vanishing point transition A and the vanishing point transition B, the state where the first image PI is displayed on the image display unit 15 is changed to the state where the second image NI is displayed. It is also possible to make a transition in the reverse order from the state in which the second image NI is displayed to the state in which the first image PI is displayed. That is, the display area Sa displaying the second image NI is gradually reduced toward the vanishing point Va, and the first image PI is gradually enlarged from the outer frame as the display area Sa is reduced, so that the second image NI is displayed. Transition from the state where is displayed to the state where the first image PI is displayed. In this case, when the display area Sa is reduced and finally becomes the minimum display area Sa, the display area Sa is erased.

  As described above, according to the image transition device 1 of the first embodiment, when displaying an image having a vanishing point, the image transition can be performed based on the vanishing point, and there is an interestingness that matches the characteristics of the image. Image transition can be realized. Further, according to the vanishing point transition A, by setting the vanishing line of the first image PI to a line, it is possible to realize an interesting image transition that matches the characteristics of the image. According to the vanishing point transition B, by setting a straight line from the vanishing point Va of the first image PI to the four vertices of the second image NI as a line, the movement of the line and the display area Sa and the second image NI are similar. Calculation in the case of non-shape is unnecessary, and an interesting image transition suitable for the feature of the image can be realized with a smaller calculation amount than the vanishing point transition A.

(Embodiment 2)
Similarly to the first embodiment, the image transition apparatus 1 according to the second embodiment includes the image acquisition unit 11, the storage unit 12, the vanishing point acquisition unit 13, the image transition unit 14, and the image display unit 15 illustrated in FIG. In the second embodiment, the image transition unit 14 selects an image transition method based on whether or not there is at least one vanishing point in the first image PI and / or the second image NI.

  An example of the image display operation when there is at least one vanishing point in the first image PI and / or the second image NI will be described using the flowchart of FIG. The image transition apparatus 1 starts processing of the image display 2 shown in FIG. 12 when the power is turned on or when a command for instructing image display is received from the outside.

  First, the image acquisition unit 11 of the image transition apparatus 1 acquires two or more images to be displayed on the image display unit 15. (Step S41). The storage unit 12 stores two or more images acquired by the image acquisition unit 11. The vanishing point acquisition unit 13 analyzes all the two or more images stored in the storage unit 12 and detects the vanishing point (step S42). The vanishing point acquisition unit 13 sends the vanishing point information to the image transition unit 14.

  The image display unit 15 displays the first image among the two or more images stored in the storage unit 12 (step S43). The first image may be designated by the user or may be selected at random. Alternatively, the first image may be a one-color image such as white or black. The trigger for displaying the first image is the same as in the first embodiment.

  The image transition unit 14 determines whether or not there is at least one vanishing point in the first image PI based on the vanishing point information (step S44). When there is a vanishing point in the first image PI (step S44; YES), the image transition unit 14 determines whether there is at least one vanishing point in the second image NI based on the vanishing point information. (Step S45). If the first image PI has a vanishing point and the second image NI has no vanishing point (step S44; YES, step S45; NO), the image transition unit 14 selects the vanishing point transition 1 (step S46). . If the first image PI has a vanishing point and the second image NI also has a vanishing point (step S44; YES, step S45; YES), the image transition unit 14 selects the vanishing point transition 2 (step S47). .

  On the other hand, when there is no vanishing point in the first image PI (step S44; NO), the image transition unit 14 determines whether there is at least one vanishing point in the second image NI based on the vanishing point information. (Step S48). When the first image PI has no vanishing point and the second image NI has a vanishing point (step S44; NO, step S48; YES), the image transition unit 14 selects the vanishing point transition 3 (step S49). When there is no vanishing point in the first image PI and no vanishing point in the second image NI (step S44; NO, step S48; NO), the image transition unit 14 selects another image transition method (step S50). .

  The image display unit 15 starts image transition from the first image PI to the second image NI by the image transition method selected by the image transition unit 14 (step S51). The image transition unit 14 determines whether the image transition is completed (step S52). When the image transition is not completed (step S52; NO), step S52 is repeated. When the image transition is completed (step S52; YES), the image transition unit 14 determines whether there is an image to be displayed next (step S53). If there is an image to be displayed next (step S53; YES), the process returns to step S44, and steps S44 to S53 are repeated. If there is no image to be displayed next (step S53; NO), the process is terminated.

  Next, the vanishing point transition 2 which is an example of the vanishing point transition when one vanishing point exists in both the first image PI and the second image NI will be described using the flowcharts of FIGS. 13 and 14. In this example, the first image PI and the second image NI are the same rectangle, and the display area for displaying the second image NI is also a rectangle. Vanishing point transition 2 is an image transition method in which the display area for displaying the second image NI is gradually enlarged from the vanishing point of the first image PI, and a part including the vanishing point of the second image NI is displayed in the display area. One.

  When the image display unit 15 receives an instruction to start the process of the vanishing point transition 2 from the image transition unit 14, the image display unit 15 starts the process of the vanishing point transition 2 illustrated in FIG. As shown in FIG. 13A, the image display unit 15 sets, in the first image PI, straight lines from the vanishing point Va of the first image PI to the four vertices of the second image NI to the lines La1 to La4. (Step S61), the display area Sa in which the vertexes Pa1 to Pa4 are on the lines La1 to La4, respectively, is formed.

  The display area Sa is (distance a21 from the vanishing point Va to the vertex Pa1 / distance a11 from the vanishing point Va to the intersection of the line La1 and the side of the second image NI) = (distance a22 from the vanishing point Va to the vertex Pa2). / Distance a12 from the vanishing point Va to the intersection of the line La2 and the side of the second image NI) = (Distance a23 from the vanishing point Va to the vertex Pa3) / Variation of the line La3 and the side of the second image NI from the vanishing point Va Distance a13) = (Distance a24 from vanishing point Va to vertex Pa4 / Distance a14 from vanishing point Va to the intersection of line La4 and the side of second image NI). This ratio is R1. The display area Sa expands so that the vertex Pa1 to the vertex Pa4 move on the lines La1 to La4, respectively, so as to satisfy this equation E1.

  FIG. 13A shows an example of the display area Sa during enlargement. First, the image display unit 15 forms a minimum display area Sa that satisfies the above-described equation E1 (step S62). The minimum display area Sa may be the minimum display area Sa based on the display function, or may be an arbitrarily set minimum display area Sa.

  On the other hand, as illustrated in FIG. 13B, the image display unit 15 displays, in the second image NI, straight lines from the vanishing point Vb of the second image NI to the four vertices of the second image NI as lines Lb1 to Lb4. (Step S63), the cut areas Sb in which the vertices Pb1 to Pb4 are on the lines Lb1 to Lb4, respectively, are formed.

  The cutout area Sb is (distance b21 from vanishing point Vb to vertex Pb1 / distance b11 from vanishing point Vb to the intersection of line Lb1 and the side of second image NI) = (distance b22 from vanishing point Vb to vertex Pb2). / Distance b12 from the vanishing point Vb to the intersection of the line Lb2 and the side of the second image NI) = (distance b23 from the vanishing point Vb to the vertex Pb3) / the line Lb3 from the vanishing point Vb to the side of the second image NI Distance b13 to intersection point) = (Distance b24 from vanishing point Vb to vertex Pb4 / Distance b14 from vanishing point Vb to the intersection of line Lb4 and the side of second image NI). This ratio is R2. The cutout area Sb expands by moving the vertices Pb1 to Pb4 on the lines Lb1 to Lb4, respectively, so as to satisfy this equation E2.

  FIG. 13B is an example of the cutout area Sb in the middle of enlargement. First, the image display unit 15 forms the minimum cutout region Sb that satisfies the above-described equation E2 (step S64). The minimum cutout area Sb may be the minimum cutout area Sb by the display function, or may be the arbitrarily set minimum cutout area Sb. The size of the minimum display area Sa and the minimum cut-out area Sb is the same.

  Next, the image display unit 15 sets the vertices Pa1 to Pa4 of the display areas Sa on the lines La1 to La4 and the vertices Pb1 to Pb4 of the cut areas Sb on the lines Lb1 to Lb4 so that R1 = R2. The display area Sa and the cut area Sb are enlarged by moving, and the image cut by the cut area Sb of the second image NI is displayed on the display area Sa of the first image PI (step S65). Further, the image display unit 15 reduces the first image PI in accordance with the enlargement of the display area Sa (step S66).

  When the first image PI is still displayed (step S67; NO), the image display unit 15 returns to step S65 and repeats steps S65 to S67. When the display area Sa matches the outer frame of the second image NI and only the second image NI is displayed (step S67; YES), the image display unit 15 ends the process.

  The vanishing point transition 1, which is a vanishing point transition when the first image PI has a vanishing point and the second image NI has no vanishing point, includes the vanishing point transition A or the vanishing point transition B described in the first embodiment. Is adopted. The vanishing point transition 3, which is a vanishing point transition when the first image PI has no vanishing point and the second image NI has one vanishing point, performs the same processing as the vanishing point transition A or the vanishing point transition B. This is performed based on the vanishing point of the second image NI, not the vanishing point of the first image PI.

  In the vanishing point transition 2, as in the case of the vanishing point transition A and the vanishing point transition B, the state in which the second image NI is displayed on the image display unit 15 is reversed to the state in which the first image PI is displayed. It is also possible to make transitions in this order. That is, the display area Sa displaying the second image NI is gradually reduced toward the vanishing point Va, and the cutout area Sb is gradually reduced toward the vanishing point Vb, and the cutout area Sb is displayed in the display area Sa. The second image NI cut out at is displayed. As the display area Sa is reduced, the first image PI is gradually enlarged from the outer frame, thereby transitioning from the state in which the second image NI is displayed to the state in which the first image PI is displayed. In this case, when the display area Sa is reduced and finally becomes the minimum display area Sa, the display area Sa is erased.

  As described above, according to the image transition device 1 of the second embodiment, the image transition can be performed based on the vanishing points of both the first image PI and the second image NI, which more suits the image characteristics. An interesting image transition can be realized.

  In the above embodiment, the first image PI and the second image NI are the same rectangle, and the display area Sa displaying the second image NI is also an example of a rectangle. However, the present invention is not limited to this, and the first image PI and the second image NI may be different graphics.

  An example in which the first image PI and the second image NI are different graphics will be described with reference to FIG. Here, an example is used in which the first image PI is a rectangle, the second image NI is an ellipse, and the display area for displaying the second image NI is the second image NI and a cleaning ellipse. Here, it is assumed that there is only one vanishing point in the first image PI.

  First, the image display unit 15 sets arbitrary two straight lines from the vanishing point Va of the first image PI to the outer frame of the second image NI to the lines La1 and La2. Here, the first image PI and the second image NI are overlapped with their centers being coincident, but the second image NI may be a position including the vanishing point Va.

  The image display unit 15 includes points Pa1 and Pa2 on the lines La1 and La2 on the outer periphery, respectively (the distance from the vanishing point Va to the point Pa1, the line La1 from the vanishing point Va, and the outer frame of the second image NI The minimum display area Oa that satisfies the equation E3: (Distance to the intersection of the second image NI) = (Distance from the vanishing point Va to the top Pa2 / Distance from the vanishing point Va to the intersection of the line La2 and the outer frame of the second image NI) Is displayed. Here, it is assumed that the display area Oa is similar to the second image NI. The minimum display area Oa may be a minimum display area Oa based on a display function, or may be an arbitrarily set minimum display area Oa.

  Next, as shown in FIG. 15B, the image display unit 15 moves the point Pa1 and the point Pa2 on the lines La1 and La2 so as to satisfy the above-described equation E3, respectively, thereby displaying the display area Oa. The image is enlarged and the second image NI is displayed in the display area Oa. Finally, the display area Oa is matched with the outer frame of the second image NI.

  If the display area Oa is not similar to the second image NI and is a circle centered on the vanishing point Va, for example, the lines La1 and La2 are moved so as to be half the major axis and half the minor axis. Thus, the display area Oa is finally matched with the outer frame of the second image NI.

  Further, the image display unit 15 reduces the first image PI in accordance with the enlargement of the display area Oa. The first image PI is divided by a straight line from the display area Oa and the vanishing point Va to each vertex of the first image PI. As the display area Oa is enlarged, the divided image is compressed in a direction perpendicular to the side of the first image PI. Since the straight line from the vanishing point Va to each vertex of the first image PI does not move, it does not change in the direction parallel to the side of the first image PI. Further, as in the case of other vanishing point transitions, the reduction method of the first image PI is not limited to this.

  When the display area Oa finally becomes the same size as the second image NI, as shown by the company line of sight in FIG. 15B, the display of a part of the first image PI remains. When the display area Oa becomes the same size as the second image NI, the image display unit 15 erases the shaded portion of the first image PI so that only the second image NI is displayed.

  As in the case of other vanishing point transitions, it is possible to make a transition in the reverse order from the state in which the second image NI is displayed on the image display unit 15 to the state in which the first image PI is displayed. . Further, the display area and the second image NI may not be the same type of figure. In this case, a minimum display area is formed around the vanishing point, the display area is enlarged while moving the center to the center of the second image NI, and finally deformed so as to coincide with the second image NI.

  The display area enlargement method and the currently displayed image reduction method described in the above embodiments may be combined for each image. For example, the image α is reduced toward the vanishing point of the displayed image α, and a black image is displayed. Subsequently, in a state where a black image is displayed, the display area is enlarged from the vanishing point of the image β, and the image β is displayed. In this case, it is possible to give a person who sees the image such that the image α is absorbed by the vanishing point and the image β diverges from the vanishing point.

  Moreover, although said embodiment demonstrated the case where there was one vanishing point, when there are a plurality of vanishing points, you may select one vanishing point. In this case, the vanishing point closest to the center of the image may be selected, the vanishing point farthest from the center of the image may be selected, or an arbitrary vanishing point may be selected.

  Further, as the vanishing point transition, an image transition method having an effect of displaying the second image NI in a radial manner among the existing image transition methods may be adopted, and the image transition may be performed so as to radiate around the vanishing point. .

  In order to realize the above function, the image transition apparatus 1 includes, as an example of a hardware configuration, a control unit 31, a main storage unit 32, an external storage unit 33, an operation unit 34, a display unit 35, and a reception as illustrated in FIG. Part 36 is provided. The main storage unit 32, the external storage unit 33, the operation unit 34, the display unit 35, and the reception unit 36 are all connected to the control unit 31 via the internal bus 30.

  The control unit 31 includes a CPU (Central Processing Unit) and the like, and executes each process according to a control program 39 stored in the external storage unit 33. The control unit 31 executes each process of the vanishing point acquisition unit 13, the image transition unit 14, and the image display unit 15.

  The main storage unit 32 is composed of a RAM (Random-Access Memory) or the like, loads a control program 39 stored in the external storage unit 33, and is used as a work area for the control unit 31.

  The external storage unit 33 includes a non-volatile memory such as a flash memory, a hard disk, a DVD-RAM (Digital Versatile Disc Random-Access Memory), a DVD-RW (Digital Versatile Disc ReWritable), and controls the processing of the image transition apparatus 1. A program to be executed by the unit 31 is stored in advance, and data stored by the program is supplied to the control unit 31 in accordance with an instruction from the control unit 31, and the data supplied from the control unit 31 is stored. The storage unit 12 is configured in the external storage unit 33.

  The operation unit 34 includes a pointing device such as a keyboard and a mouse, and an interface device that connects the keyboard and the pointing device to the internal bus 30. When the user inputs an image or when a display instruction is input, the instruction is supplied to the control unit 31 via the operation unit 34.

  The display unit 35 is configured by a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), or the like, and displays an image stored in the external storage unit 33 according to an instruction from the control unit 31. The display unit 35 functions as a part of the image display unit 15.

  The receiving unit 36 includes a network terminating device or a wireless communication device connected to a communication network, and a serial interface or a LAN (Local Area Network) interface connected to the network terminating device or wireless communication device. The image acquisition unit 11 is connected to a communication network via the reception unit 36 and receives an image from the outside. The vanishing point information is also received via the receiving unit 36 when acquired from the outside.

  The processing of the image acquisition unit 11, the storage unit 12, the vanishing point acquisition unit 13, the image transition unit 14, and the image display unit 15 shown in FIG. The operation unit 34, the display unit 35, the reception unit 36, and the like are used as resources for processing.

  In addition, the hardware configuration and the flowchart described above are merely examples, and can be arbitrarily changed and modified.

  The central part that performs image transition processing including the control unit 31, the main storage unit 32, the external storage unit 33, the operation unit 34, the internal bus 30 and the like uses a normal computer system, not a dedicated system. Is feasible. For example, a computer program for executing the above operation is stored and distributed in a computer-readable recording medium (flexible disk, CD-ROM, DVD-ROM, etc.), and the computer program is installed in the computer. Thus, the image transition apparatus 1 that executes the above-described processing may be configured. Alternatively, the image transition apparatus 1 may be configured by storing the computer program in a storage device included in a server on a communication network such as the Internet and downloading the computer program from a normal computer.

  Further, when the functions of the image transition apparatus 1 are realized by sharing an OS (operating system) and an application program or by cooperation between the OS and the application program, only the application program part is stored in a recording medium or a storage device. May be.

  It is also possible to superimpose a computer program on a carrier wave and distribute it via a communication network. For example, the computer program may be posted on a bulletin board (BBS, Bulletin Board System) on a communication network, and the computer program may be distributed via the communication network. The computer program may be started and executed in the same manner as other application programs under the control of the OS, so that the above-described processing may be executed.

  Although several embodiments of the present invention have been described, the present invention is included in the invention described in the claims and equivalents thereof. Hereinafter, the invention described in the scope of claims of the present application will be appended.

(Appendix 1)
Image acquisition means for acquiring two or more images including a first image and a second image;
Vanishing point acquisition means for acquiring vanishing point information indicating the position of the vanishing point in the first image;
Image display means for displaying an image;
If it is determined based on the vanishing point information whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image, the image From the state where the first image is displayed on the display means, the display area for displaying the second image is sequentially enlarged from the position of one vanishing point of the first image to the outer frame of the second image, Image transition means for transitioning to a state in which the second image is displayed;
An image transition device comprising:

(Appendix 2)
The vanishing point acquisition means further acquires vanishing point information indicating the position of the vanishing point in the second image,
When the image transition means determines that there is no vanishing point in the first image and at least one vanishing point in the second image, the first image is displayed on the image display means. From the state, the display area for displaying the second image is sequentially enlarged from the position of one vanishing point of the second image to the outer frame of the second image, and the state is changed to the state in which the second image is displayed. The image transition apparatus according to appendix 1, wherein

(Appendix 3)
The vanishing point acquisition means further acquires vanishing point information indicating the position of the vanishing point in the second image,
If the image transition means determines that there is one vanishing point in each of the first image and the second image, the image transition means extracts the second image from the position of the one vanishing point in the second image. 3. The image transition apparatus according to appendix 1 or 2, wherein a part of the second image cut out in a cut-out area that sequentially expands to a frame is displayed in the display area.

(Appendix 4)
The image transition device according to appendix 1 or 2, wherein the image transition means reduces the second image in accordance with the display area and displays the entire image in the display area.

(Appendix 5)
The image transition device according to appendix 1 or 2, wherein the image transition means cuts out a portion corresponding to the display area of the second image and displays the cut-out portion on the display area.

(Appendix 6)
The image transition means compresses and displays the first image in a direction perpendicular to the outer frame of the first image in accordance with the enlargement of the display area. The image transition apparatus described in 1.

(Appendix 7)
The image transition means moves the first image in a direction perpendicular to the outer frame of the first image in accordance with the enlargement of the display area, and erases the portion that has come out of the outer frame of the first image. The image transition device according to any one of appendices 1 to 5, characterized in that:

(Appendix 8)
The image transition means sequentially enlarges the display area from the position of one vanishing point to the outer frame of the second image so that the display area is always similar to the shape of the second image. The image transition device according to any one of appendices 1 to 7.

(Appendix 9)
The image transition means sets two or more arbitrary straight lines extending radially from the vanishing point, moves the straight line, and determines the distance from the vanishing point, the straight line, and the outer frame of the second image. The display region including the points on the straight line having the same ratio to the distance to the intersection on the outer periphery is sequentially enlarged from the position of one vanishing point to the outer frame of the second image. The image transition device according to any one of appendices 1 to 7.

(Appendix 10)
The image transition device according to appendix 9, wherein the image transition means deforms the first image in a direction parallel to the outer frame of the first image in accordance with the movement of the straight line.

(Appendix 11)
Any one of Supplementary notes 1 to 10, wherein the image transition means makes a transition in a reverse order from a state in which the second image is displayed on the image display means to a state in which the first image is displayed. The image transition apparatus described in 1.

(Appendix 12)
An image transition method executed by an image transition apparatus including an image display means for displaying an image,
An image acquisition step of acquiring two or more images including a first image and a second image;
Vanishing point acquisition step of acquiring vanishing point information indicating the position of the vanishing point in the first image;
If it is determined based on the vanishing point information whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image, the image From the state where the first image is displayed on the display means, the display area for displaying the second image is sequentially enlarged from the position of one vanishing point of the first image to the outer frame of the second image, An image transition step for transitioning to a state in which the second image is displayed;
An image transition method comprising:

(Appendix 13)
Computer
Image acquisition means for acquiring two or more images including a first image and a second image;
Vanishing point acquisition means for acquiring vanishing point information indicating the position of the vanishing point in the first image;
Image display means for displaying an image;
If it is determined based on the vanishing point information whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image, the image From the state where the first image is displayed on the display means, the display area for displaying the second image is sequentially enlarged from the position of one vanishing point of the first image to the outer frame of the second image, Image transition means for transitioning to a state in which the second image is displayed;
A program characterized by functioning as

DESCRIPTION OF SYMBOLS 1 ... Image transition apparatus, 11 ... Image acquisition part, 12 ... Memory | storage part, 13 ... Vanishing point acquisition part, 14 ... Image transition part, 15 ... Image display part, 31. ..Control unit 32 ... Main storage unit 33 ... External storage unit 34 ... Operation unit 35 ... Display unit 36 ... Reception unit a11 to a14 ... Distance a21 to a24 ... distance, b11 to b14 ... distance, b21 to b24 ... distance, d1 to d8 ... distance, BP1 to BP4 ... reference point, BL1 to BL4 ... reference line, F1-F12 ... image, La1 and La2 ... line, Lb1-Lb4 ... line, M ... center, NI ... second image, Pa1-Pa4 ... vertex, Pb1-Pb4. .., vertex, PI: first image, Va: vanishing point, Vb ... vanishing point, X1-X4 ... point

Claims (13)

Image acquisition means for acquiring two or more images including a first image and a second image;
Image display means for displaying an image;
If it is determined whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image , After displaying an image obtained by combining the second image with the enlargement ratio at the position of the one vanishing point of the first image, the second image with a second enlargement ratio larger than the first enlargement ratio is displayed. a display the synthesized image to the position of one of the vanishing point of the first image while indicating display the image slide into successively larger al, an image changing means for shifting to a state where the second image is displayed,
An image transition device comprising:   When the image transition means determines that there is no vanishing point in the first image and at least one vanishing point in the second image, the second image is on the first image. 2. The image transition according to claim 1, wherein an image that is sequentially enlarged from the position of one vanishing point of the second image is superimposed and displayed, and the transition to the state in which the second image is displayed is performed. apparatus.   If the image transition means determines that there is one vanishing point in each of the first image and the second image, the image transition means extracts the second image from the position of the one vanishing point in the second image. The image transition apparatus according to claim 1, wherein a part of the second image cut out in a cut-out area that sequentially expands to a frame is displayed.   The image transition device according to claim 1, wherein the image transition unit reduces the second image according to a display area and displays the entire image in the display area.   3. The image transition device according to claim 1, wherein the image transition unit cuts out a portion corresponding to the display area of the second image and displays it on the display area. 4.   6. The image transition unit according to claim 1, wherein the first image is compressed and displayed in a direction perpendicular to an outer frame of the first image in accordance with enlargement of the second image. The image transition apparatus of any one of Claims.   The image transition means moves the first image in a direction perpendicular to the outer frame of the first image in accordance with the enlargement of the second image, and erases the portion of the first image that protrudes from the outer frame. The image transition device according to claim 1, wherein the image transition device is an image transition device.   The image transition means superimposes images in which the second image is sequentially enlarged from one vanishing point so that the display area of the second image is always similar to the shape of the second image. The image transition apparatus according to claim 1, wherein the image transition apparatus displays the image.   The image transition means sets two or more arbitrary straight lines extending radially from the vanishing point, moves the straight line, and determines the distance from the vanishing point, the straight line, and the outer frame of the second image. An image in which the second image sequentially expands from the position of one vanishing point is superimposed and displayed in a display area that includes the points on the straight line that have the same ratio to the distance to the intersection point on the outer periphery. The image transition apparatus according to claim 1, wherein:   The image transition device according to claim 9, wherein the image transition unit deforms the first image in a direction parallel to an outer frame of the first image in accordance with the movement of the straight line.   The said image transition means makes a transition in the reverse order from the state where the said 2nd image was displayed on the said image display means to the state where the said 1st image was displayed, The any one of Claim 1 thru | or 10 characterized by the above-mentioned. The image transition apparatus of Claim 1. An image transition method executed by an image transition apparatus including an image display means for displaying an image,
An image acquisition step of acquiring two or more images including a first image and a second image;
If it is determined whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image , After displaying an image obtained by combining the second image with the enlargement ratio at the position of the one vanishing point of the first image, the second image with a second enlargement ratio larger than the first enlargement ratio is displayed. a display the synthesized image to the position of one of the vanishing point of the first image while indicating display the image slide into successively larger al, an image transition step of transitioning to a state where the second image is displayed,
An image transition method comprising: Computer
Image acquisition means for acquiring two or more images including a first image and a second image;
Image display means for displaying an image;
If it is determined whether there is at least one vanishing point in the first image, and it is determined that there is at least one vanishing point in the first image , After displaying an image obtained by combining the second image with the enlargement ratio at the position of the one vanishing point of the first image, the second image with a second enlargement ratio larger than the first enlargement ratio is displayed. a display the synthesized image to the position of one of the vanishing point of the first image while indicating display the image slide into successively larger al, image transition means for transitioning to a state where the second image is displayed,
A program characterized by functioning as

Images