FR3035562A1 - TERMINAL TO QUALIFY AN APPRAISAL OF A MULTIMEDIA DOCUMENT - Google Patents

Abstract

The invention essentially concerns a terminal (160) capable of qualifying an assessment made to a multimedia document being restored by said terminal (160), said terminal comprising: a detection and monitoring module (142), capable of producing a result from the detection and tracking of at least one pointer on a display interface (165) of said terminal (160), - a mode change module (144), able to modify the restitution of the multimedia document , on production of said result, and - an analysis module (152), able to determine from said result an appreciation and a degree of appreciation of said multimedia document, the degree of appreciation corresponding to a value chosen from a group comprising at least three values.

Description

BACKGROUND OF THE INVENTION The present invention relates to the field of qualifying an assessment of a multimedia document. The invention applies in particular to the qualification of a judgment 5 to a multimedia document, when this multimedia document is being restored by a terminal of a user. In a known manner, Internet sites use systems making it possible to propose to terminal users (for example mobile terminals such as a digital tablet or a mobile telephone) to note multimedia files such as videos. Thus, a user can for example click on a note or other sign qualifying his appreciation of a video appearing on the display interface of his terminal, or type the note on the keyboard of his terminal. However, existing systems are poorly suited to mobile terminals and terminals having touch display interfaces. OBJECT AND SUMMARY OF THE INVENTION The present invention relates to a terminal capable of qualifying an assessment made to a multimedia document being restored by the terminal, the terminal comprising: a detection and monitoring module, capable of producing a result from the detection and tracking of at least one pointer on a display interface of the terminal, a mode change module, able to modify the reproduction of the multimedia document, on production of the result, and a module of analysis, able to determine from the result an appreciation and a degree of appreciation of the multimedia document, the degree of appreciation corresponding to a value selected from a group comprising at least three values.

The invention is advantageous in that the user can, by a simple gesture, give an assessment (for example positive or negative) and a degree of appreciation on the multimedia document being restored. In addition, the invention is very suitable for mobile terminals and terminals having a touch display interface. The invention furthermore relates to a device for detecting and tracking a pointer on a display interface of a terminal, a multimedia document being in the process of being restored by the terminal, the device comprising: a module for detecting and detecting tracking, able to produce a result from the detection and monitoring of at least one pointer on the display interface, and a mode change module, able to modify the restitution of the multimedia document, on production of the result . The invention furthermore relates to an analysis device capable of determining an appreciation and a degree of appreciation of a multimedia document, the device comprising: an analysis module able to determine, from a result produced from detection and monitoring of at least one pointer on a display interface of a terminal, an appreciation and a degree of appreciation of the multimedia document, the degree of appreciation corresponding to a value chosen from a group comprising at least one minus three values. In a particular embodiment of the terminal, the detection and monitoring device or the analysis device, the result is a movement of the pointer. In a particular embodiment of the terminal, the detection and monitoring device or the analysis device, said displacement is a trajectory of said pointer. In a particular embodiment of the terminal or of the analysis device, the module of FIG. The analysis determines the judgment according to the direction of the trajectory. In a particular embodiment of the terminal or the analysis device, the analysis module determines the degree of appreciation as a function of the length of the trajectory. In a particular embodiment of the terminal, the detection and monitoring device or the analysis device, the pointer is a contact zone on the display interface, and the displacement is an extension of the least one contact zone. In a particular embodiment of the terminal or the analysis device, the analysis module determines the judgment as a function of the position of a first contact of the at least one contact zone.

In a particular embodiment of the terminal or the analysis device, the analysis module determines the degree of appreciation as a function of the widening of the at least one contact zone. In a particular embodiment of the terminal, the detection and tracking device or the analysis device, the result is a duration during which the pointer is positioned on a predetermined area of said display interface. The invention further relates to a method for detecting and tracking a pointer on a display interface of a terminal, a multimedia document being being restored by a terminal, the method comprising the following steps: - production of a result from the detection and tracking of at least one pointer on the display interface, and - modification of the reproduction of the multimedia document, on production of said result.

The invention further relates to an analysis method for determining an appreciation and a degree of appreciation of a multimedia document, the method comprising the following step: determination, from a result produced from the detection and tracking of at least one pointer on a display interface of a terminal, an appreciation and a degree of appreciation of the multimedia document, the degree of appreciation corresponding to a value selected from a group comprising at least three values. In a particular embodiment, the different steps of the detection and tracking method are determined by computer program instructions. Accordingly, the invention also relates to a computer program on an information carrier (or recording medium), this program being capable of being implemented in a detection and monitoring device or more generally in a computer, this program comprising instructions adapted to the implementation of the steps of a detection and monitoring method as defined above. The invention also relates to an information medium (or recording medium) readable by a detection and monitoring device or more generally by a computer, and comprising instructions of a computer program as mentioned hereinabove. above. In a particular embodiment, the various steps of the analysis method are determined by computer program instructions.

Accordingly, the invention also relates to a computer program on an information medium (or recording medium), this program being capable of being implemented in an analysis device or more generally in a computer. , this program comprising instructions suitable for carrying out the steps of an analysis method as defined above. The invention also relates to an information medium (or recording medium) readable by an analysis device or more generally by a computer, and comprising instructions of a computer program as mentioned above. The aforementioned programs can use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a particular form compiled, or in any other desirable form. The information carriers mentioned above may be any entity or device capable of storing the program. For example, the media may comprise storage means, such as a rewritable non-volatile memory (of the EEPROM or Flash NAND type for example), or such as a ROM, for example a CD ROM or a microelectronic circuit ROM. , or a magnetic recording means, for example a hard disk. On the other hand, the information carriers may be a transmissible medium such as an electrical or optical signal, which may be conveyed via an electrical or optical cable, by radio or by other means. The programs according to the invention may in particular be downloaded on an Internet-type network. Alternatively, the information carriers may be an integrated circuit in which the programs are incorporated, the circuit being adapted to execute or to be used in the execution of the method in question. The invention furthermore relates to a server able to recommend a first multimedia document, the server comprising: a recommendation module, able to recommend the first multimedia document according to an appreciation and a degree of appreciation of a second multimedia document determined by the analysis device as described above, and according to the metadata associated with the first multimedia document. The invention furthermore relates to a method for recommending a first multimedia document, the method comprising the following step: - recommendation of the first multimedia document according to an assessment and a degree of appreciation of a second document Multimedia determined according to the analysis method as described above, and according to metadata associated with the first multimedia document. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will become apparent from the description given below, with reference to the accompanying drawings which illustrate an embodiment having no limiting character. In the figures: FIG. 1 schematically represents the hardware architecture of a qualification system of an assessment of a multimedia document according to a first embodiment, and a first example of a hardware architecture of a system for creating and restoring a composite document; Figure 2 schematically shows a particular example of the authoring and rendering system and the qualification system of Figure 1; FIGS. 3a and 3b show schematically examples of an extraction module of the creation and rendering system of FIG. 1; FIG. 4 schematically represents the hardware architecture of the qualification system according to the first embodiment, and a second example of a hardware architecture of a creation and rendering system; FIG. 5 represents, in the form of a flowchart, the main steps of a method for creating a composite document, implemented by the creation and rendering system of FIG. 1; FIG. 6 schematically represents a multimedia file and second multimedia files generated by the creation and rendering system of FIG. 1; FIGS. 7a and 7b show, in the form of flowcharts, examples of sub-steps of an extraction step of the creation process of FIG. 5; FIG. 8 represents, in the form of a flowchart, the main steps of a method for rendering a composite document, implemented by the creation and rendering system of FIG. 1; Figs. 9a and 9b schematically show a display interface of the authoring and rendering system of Fig. 1; FIG. 10 represents, in the form of a flowchart, the main steps of a method for detecting and tracking a pointer according to the first embodiment; FIG. 11 represents, in the form of a flowchart, the main steps of an analysis method according to the first embodiment. FIG. 12 represents, in the form of a flowchart, the main steps of a method of recommending a multimedia document according to the first embodiment.

DETAILED DESCRIPTION OF SEVERAL EMBODIMENTS Fig. 1 shows a terminal 160 and a server 170. In one example, the terminal 160 is a mobile terminal such as a mobile phone or a digital tablet. The terminal 160 includes a device 130 for rendering a composite document 900, a device for detecting and tracking a pointer 140 on a display interface and an analysis device 150. In this example, the terminal 160 may include an application downloaded beforehand, for example from a download platform. The application then comprises the modules of the reproduction device 130, the detection and monitoring device 140 and the analysis device 150 described hereinafter. The terminal 160 further includes a display interface 165, a media player 166 and communication means 167. In one example, the display interface 165 is touch sensitive.

The server 170 comprises a device 120 for creating a composite document 900, and a recommendation device 195. In addition, the server 170 includes a database 198 storing multimedia files 800, and communication means 175, capable of communicating with the communication means 167 of the terminal 160 via a telecommunications network 190. The network 190 may be for example an Internet network. The authoring device 120 comprises a module 121 for obtaining a first multimedia stream, said initial multimedia stream.

By "multimedia flow" is meant a flow of multimedia data generated by the opening of a multimedia resource, such as a multimedia file, a video sensor, or a television program broadcast. The starting multimedia stream may be a stream generated by the opening of a multimedia file 800 of the database 198. The first multimedia stream comprises at least one video component 820 of the multimedia file 800, this video component 820 comprising a plurality of images 822 (see Figure 6). As a variant, the multimedia source stream may be any type of multimedia stream comprising at least one video component comprising a plurality of images, in particular a stream transmitted by the network 190. The creation device 120 comprises an extraction module 122. of N image sequences 850 of said video component 820, N being an integer greater than or equal to 1, for example equal to 4. As shown in FIG. 6, an image sequence 850 may comprise consecutive images 822 As a variant, an image sequence 850 may comprise non-consecutive images 822 of the video component 820, for example an image 822 on two. In addition, an image sequence 850 may include an image repetition 822.

FIGS. 3a and 3b, described in detail below, represent examples of extraction modules 122. The extraction module 122 thus makes it possible to extract N image sequences 850 from the first multimedia stream. In this example, the authoring device 120 includes a conversion module 123 of the format of each image sequence 850 extracted by the extraction module 122, preferably in a format of lower resolution than the resolution of the video component 820. of the starting multimedia stream. In a variant, the conversion module 123 can reduce the number of images of at least one image sequence 850. In a variant, the format of each image sequence 850 can be converted into a format adapted to the multimedia player. 166 of the terminal 160. It is thus possible to reduce the size of the image sequences 850 after their extraction. The authoring device 120 includes a generation module 124 of N second multimedia streams. Each second multimedia stream is, for example, recorded in a multimedia file 860. Each second generated multimedia stream is such that it comprises a video component 870 corresponding to one of said N extracted image sequences 850. Thus, the generation module 124 uses each image sequence 850 extracted to form one of the second multimedia streams.

The authoring device 120 includes a creation module 125 of said composite document 900 from the N second multimedia streams. It is thus possible to bring together in one document the extracted 850 image sequences. If the user wishes to obtain an overview of the starting multimedia stream, he can then obtain the composite document 900 by downloading it from the server 170. It is then possible to implement a reproduction of the image sequences 850 of the composite document. 900. The rendering device 130 comprises an opening module 132 of M windows 1100 in a display interface 165 of the terminal 160, M being an integer greater than or equal to 2, for example equal to 4. In an example , M is greater than or equal to the number N. The M windows 1100 do not overlap completely with each other. The windows 1100 can be arranged according to various detailed arrangements, in particular below. In addition, the rendering device 130 includes a reproduction module 134 capable of launching M instances of a media player 166 of said terminal 160, so as to restore the video component 870 of at least a second multimedia stream, in a loop, in at least one of said windows 1100.

By "loop" is meant that each video component 870 is restored at least twice in a window 1100. Thus, the loop can be finite or infinite. When the number N is equal to the number M, each window 1100 may correspond to the video component 870 of a second different multimedia stream. When the number N is less than the number M, the video component 870 of a second multimedia stream can be restored in several different windows 1100. When the number N is greater than the number M, the video component 870 of a second multimedia stream may not be restored. The renditions of the video components 870 can be simultaneous. Thus, a user can consult at the same time and on the same terminal 160 the different image sequences 850 extracted. The loopback rendering allows the user time to view all of the restored 850 image sequences. Thus, it is proposed to the user a composite document 900 allowing him to quickly get an idea about the content of the original multimedia stream. Alternatively, the renditions of the video components 870 may not be simultaneous.

When the image sequences 850 of the composite document 900 are restored by the terminal 160, the user indicates to what extent he appreciates the content of the starting multimedia stream from which the composite document 900 is derived. For this purpose, the detection and tracking 140 includes a detection and tracking module 142, able to detect and track at least one pointer on the display interface 165 of said terminal 160, and to produce a result from the detection and tracking . When the display interface 165 is touch sensitive, the pointer may be a contact area on the display interface 165, for example a contact area between a finger or a stylus-like object and the interface of the display interface. The pointer may furthermore be a pointer to a pointing device such as a computer mouse or a remote control such as a joystick.

The result obtained may be for example a displacement of the pointer on the display interface 165, or a duration during which the pointer is positioned on a predetermined area of the display interface 165 and / or the position of the pointer on 165. In one example, during the restitution of the image sequences 850 of the composite document 900, the output of the detection and tracking module 142 is directed to the analysis device 150, while in normal times, when the components of a multimedia stream are output by the media player 166, this output is directed to the media player 166, so that the user can give orders to the media player 166, such as a pause restitution. The detected displacement thus defines an appreciation of the composite document 900. In addition, the entire display surface of the display interface 165 can be used to give the judgment and the degree of appreciation. The detection and tracking device 140 comprises a mode change module 144, able to modify the restitution of the composite document 900, on production of the result. In one example, this modification is a closure of the composite document 900. In another example, this modification is an iconification of the composite document 900. This closure or this iconification can be optionally followed by the opening and the restitution of a document. another composite document, as described above. The analysis device 150 comprises an analysis module 152, able to determine from the result produced an appreciation and a degree of appreciation of the composite document 900. The degree of appreciation 3035562 13 corresponds to a value chosen from a group comprising at least three values. The terminal 160 can therefore determine the judgment, that is to say if the user's appreciation is positive or negative. The terminal 160 can furthermore determine whether this assessment is more or less marked, for example if the user has a weakly positive or very positive opinion on the composite document 900, and therefore the multimedia stream starting from the restitution. The judgment and the degree of appreciation are then sent by the terminal 160 to the server 170, via the network 190 and the communication means 167 and 175. The recommendation device 195 of the server 170 includes a recommendation module 188, capable of recommending a multimedia document, such as a composite document, according to the judgment and degree of appreciation received, and according to metadata associated with said multimedia document. Following the qualification of the interest in the 900 composite document by the user, it is thus possible to determine other multimedia documents likely to please the user. The composite documents 900 created as described above can then be sent in turn to the user to qualify them as well.

20 We then obtain a loop of refunds, qualifications and successive recommendations for various composite documents 900 submitted to the user. In other words, in the sense of the invention, FIG. 1 represents, schematically, a first example of the hardware architecture of a system for creating and restoring 100 a multimedia document such as a composite document 900 , and the hardware architecture of a qualification system 110 of an assessment of a multimedia document (for example a composite document) according to a first embodiment.

The creation and reproduction system 100 comprises the creation device 120 and the reproduction device 130. The qualification system 110 comprises the detection and tracking device 140 and the analysis device 150.

FIG. 2 shows a particular example of the systems and devices generally described with reference to FIG. 1. More precisely, FIG. 2 represents the terminal 160 and the server 170. In one example, the terminal 160 is a mobile terminal such as FIG. a mobile phone or a digital tablet. The terminal 160 comprises in particular a processor 161, a read-only memory 162, a random access memory 163, a non-volatile memory 164, the display interface 165, the media player 166 and the communications means 167. The terminal 160 comprises in besides a screen. The read-only memory 162 constitutes a recording medium readable by the processor 161 and on which is recorded a first computer program P1, comprising instructions for carrying out the steps of a restitution process, the steps of this method. The first computer program P1 equivalently defines functional (software) modules of the rendering device 130, such as, in particular, the opening module 132 of M windows and the module 134 of restitution. A second computer program P2 according to the invention is stored in the read-only memory 162. This second computer program P2 comprises instructions for carrying out the steps of a method for detecting and following a pointer. according to the invention, the steps of this detection and monitoring method being described later with reference to FIG. 10 in the first embodiment.

This second computer program P2 equivalently defines functional (software) modules of the detection and tracking device 140, such as, in particular, the detection and tracking module 142 and the mode change module 144.

A third computer program P3 is stored in the read-only memory 162. This third computer program P3 comprises instructions for carrying out the steps of an analysis method according to the invention, the steps of this method. analysis being described later with reference to Figure 11 in the first embodiment. This third computer program P3 equivalently defines functional modules (software) of the analysis device 150, such as, in particular, the analysis module 152. The server 170 comprises in particular a processor 171, a read-only memory 172, a processor RAM 173, a nonvolatile memory 174 and communications means 175. The server 170 further includes a database 198, for example, positioned in the non-volatile memory 174. The read only memory 172 is a readable recording medium by the processor 171 and on which is recorded a fourth computer program P4, comprising instructions for executing the steps of a method for creating a composite document 900, the steps of this method of creation being described later with reference to FIG. 5. This fourth computer program P4 equivalently defines functional (software) modules of the creation device 120, t such as, in particular, the obtaining module 121 of a first multimedia stream, the extraction module 122 of N image sequences of a video component of a first multimedia stream, the conversion module 123 of the format of each extracted image sequence, the generation module 124 of N second multimedia streams, and the creation module 125 of a composite document 900 from N second multimedia streams.

A fifth computer program P5 is stored in the read-only memory 172. This fifth computer program P5 includes instructions for carrying out the steps of a method of recommending a multimedia document according to the invention. the steps of this method of recommendation being described later with reference to Fig. 12 in the first embodiment. This fifth computer program P5 equivalently defines functional modules (software) of the recommendation device 195, such as in particular the recommendation module 188 of a multimedia document. The extraction module 122 may comprise: a detection module 200 of a point of interest in a component of the first multimedia stream; and a selection module 210 of a sequence of images depending on the point of interest. interest (see Figure 3a). As a variant, the extraction module 122 may comprise: a positioning module 220 of a beacon in the video component of the first multimedia stream, and a selection module 230 of a sequence of images depending on said tag (see Figure 3b). The communication means 175 of the server 170 are capable of communicating via a network 190 with the communications means 167 of the terminal 160. FIG. 4 schematically represents the hardware architecture of the qualification system 110 according to the first embodiment of FIG. realization, and a second example of hardware architecture of the creation and rendering system 100. This second example is a variant of the first example described above with reference to FIGS. 1 and 2 and differs only in that the terminal 160 comprises, in addition to the rendering device 130, the detection and tracking device 140 and the analysis device 150, the creation device 120. In other words, the terminal 160 creates the composite document 900. Compared to the example 2, the fourth computer program P4 is thus stored in the read-only memory 162 of the terminal 160. In a variant of the first embodiment of FIG. In the embodiment described above, a first server and a second server are substituted for the server 170. The fourth and fifth computer programs P4 and P5 are thus recorded in dead memories of different servers. FIG. 5 represents a method for creating a composite document 900 implemented by the authoring device 120 executing the fourth computer program P4 recorded in the read-only memory 172 of the server 170.

In a step S710 (see FIG. 5), the obtaining module 121 obtains a first multimedia stream, said initial multimedia stream. "Multimedia flow" means a flow of multimedia data generated by the opening of a multimedia resource, such as a multimedia file, a video sensor, or a television program broadcast.

The outgoing multimedia stream may be a stream generated by the opening of a multimedia file 800 of the database 198. As shown in FIG. 6, the multimedia file 800 includes a header 810 and a video component 820. comprising a plurality of images 822. This multimedia file 800 may further comprise a text component 830 and / or an audio component 840. The text component 830 for example comprises subtitles corresponding to the sounds and dialogues that the audio component comprises. 840.

The first multimedia stream comprises at least the video component 820 of the multimedia file 800, and may further comprise the text component 830 and / or the audio component 840. In a variant, the multimedia source stream is downloaded via the means 5 of the multimedia file. communication 175. This multimedia stream comprises at least one video component comprising a plurality of images. This step S710 is followed by a step S720 of extraction, by the extraction module 122, of N image sequences 850 of the video component 820 of the starting multimedia stream, N being an integer greater than or equal to 1, for example equal to 4. As shown in FIG. 6, an image sequence 850 may comprise consecutive images 822 of the video component 820. In a variant, an image sequence 850 may comprise non-consecutive images 822 of the video component 820, for example one image 822 of two. In addition, an image sequence 850 may include image repetition 822. In one example, this extraction step S720 includes; a substep S7201 of detection, by the detection module 200 of FIG. 3a, of a point of interest in a component 20 of the starting multimedia stream (see FIG. 7a), a substep S7202 of selection by the selection module 210 of FIG. 3a, an image sequence 850 as a function of the point of interest. More precisely, in the substep S7201, the detection module 200 can detect N points of interest in one of the components 820, 830, 840 of the source multimedia stream. The selection module 210 then selects, in the substep S7202, each of the N image sequences 850 as a function of a different point of interest.

The point of interest may be a detected plane change in the video component 820, a detected motion in the video component 820, or a peak volume detected in the audio component 840 of the outgoing multimedia stream.

If the point of interest is detected in the video component 820, the selected image sequence 850 has at least one image 822 including the point of interest. For example, the image sequence 850 includes the first image 822 having the point of interest and a given number of images 822 following this first image 822. In another example, the image sequence 850 comprises the first image 822 having the point of interest and a given number of images 822 preceding this first image 822. In yet another example, the image sequence 850 comprises the first image 822 having the point of interest, a first given number of images. images 822 preceding this first image 822, and a second given number of images 822 according to this first image 822. The N image sequences 850 can intersect with each other or not. In one example, each image sequence 850 has between 10 and 200 images 822.

As a variant, in the substep S7201, the detection module 200 detects a number of points of interest less than N. The selection module 210 then selects, in the substep S7202, at least two of the N sequences. 850 images according to the same point of interest. In another variant, in the substep S7201, the detection module 200 detects a number of points of interest greater than N. The selection module 210 then selects, in the substep S7202, at least one of the N sequences of 850 images based on several points of interest. In another example, the extraction step S720 comprises; A positioning substep S7203, by the positioning module 220 of FIG. 3b, of a beacon in the video component 820 of the starting multimedia stream (see FIG. 7b), 5 - a substep S7204 of FIG. selection, by the selection module 230 of Figure 3b, a sequence of images 850 according to the tag. More specifically, in the substep S7203, the positioning module 220 automatically (or with the help of the user) sets N tags in the video component 820. Each tag may be randomly or regularly positioned. For example, the video component 820 of the starting multimedia stream can be divided into N parts of equal length, and each tag can be positioned at the beginning of each of these N parts.

Alternatively, in the substep S7203, the positioning module 220 sets a beacon number smaller than N. The selection module 230 then selects at least two of the N image sequences 850 according to the same beacon. In another variant, in the substep S7203, the positioning module 220 sets a beacon number greater than N. The selection module 230 then selects at least one of the N image sequences 850 according to several tags. Alternatively, in substep S7203, positioning module 220 uses statistical data specifying a degree of attention or user interest for each image sequence of a plurality of image sequences of the stream. starting multimedia, to position the tags at the level of the most attractive sequences. This data is for example downloaded at the same time as the initial multimedia stream, in step S700.

During the extraction step S720, the title of the start multimedia stream can be extracted from the header 810. During a step S730 (see FIG. 5), the format of each sequence of The images 850 extracted by the extraction module 122 are converted by the conversion module 123, preferably into a format of lower resolution than the resolution of the video component 820 of the source multimedia stream. In one example, this lower resolution format is an MP4 format or a GIFs format. In a variant, the conversion module 123 can reduce the number of images of at least one image sequence 850. In a variant, the format of each image sequence 850 can be converted into a format adapted to the multimedia player 166. of the terminal 160. During a step S740, N second multimedia streams are generated by the generation module 124. Each second multimedia stream is for example recorded in a multimedia file 860. Each second multimedia stream comprises at least one video component 870 corresponding to one of said N image sequences 850, that is to say having one of the N image sequences 850 (see FIG. 6).

Each second multimedia stream further includes a header 880, and may include a text component 890, but has no audio component. The text component 890 comprises, for example, subtitles corresponding to the sounds and dialogues that comprised the portion of the audio component 840 of the source multimedia stream corresponding to the sequence of images 850 that comprises the video component 870 of the second multimedia stream. This text component 890 can be extracted from the source multimedia stream by the extraction module 122, during the extraction of the corresponding image sequence 850.

This text component 870 can also be created independently. During a step S750, a composite document 900 is created by the creation module 125, from the N second multimedia streams generated by the generation module 124, and possibly the title extracted during the extraction step S720. . FIG. 8 represents a rendering method implemented by the rendering device 130 executing the first computer program P1 recorded in the read-only memory 162 of the terminal 160.

During a step S1000, the composite document 900 created in the step S750 is received via the communication means 167 of the terminal 160. During a step S1010, M windows 1100 are opened in the interface of display 165 by the opening module 132 (see FIGS. 9a and 9b), M being an integer greater than or equal to 2, for example equal to 4.

In an example, M is greater than or equal to the number N. During a step S1020, M instances of the media player 166 are launched by the reproduction module 134, so that the reproduction module 134 restores at least the video component 870 of at least one second multimedia stream, this video component 870 being looped back in at least one of said windows 1100. A text component 890 can also be restored if at least one of the second multimedia streams comprises a . In addition, the title can be displayed. By "loop" is meant that each video component 870 is restored at least twice in one of the windows 1100. Thus, the loop 25 may be finite or infinite. When the number N is equal to the number M, each window 1100 may correspond to the video component 870 of a second different multimedia stream. When the number N is less than the number M, the video component 870 of a second multimedia stream can be restored in several different windows 1100. When the number N is greater than the number M, the video component 870 of a second multimedia stream may not be restored. The renditions of the video components 870 can be simultaneous or not simultaneous. During step S1020, the coordinates of each window 1100 can be determined dynamically according to the orientation of the terminal 160 and / or the resolution of the video components 870 of the second multimedia streams and the resolution of the interface display 165 of the terminal 160. Thus, the size of the window 1100 and its position are determined dynamically. In addition, the windows 1100 may constitute a partition of the display interface 165. This partition may be regular or irregular. In one example, the display interface 165 occupies the entire screen of the terminal 160. FIGS. 9a and 9b show a regular partition of the display interface 165, when the number M is equal to 4. This partition is in a 4x1 format when the terminal 160 is oriented so that the longer sides of the terminal 160 are substantially perpendicular to the floor 1200 (see Fig. 9a), and is in a 2x2 format when the terminal 160 is oriented so that that the longer sides of the terminal 160 are substantially parallel to the ground (see Figure 9b). Alternatively, this partition is in a 1x4 format when the terminal 160 is oriented so that the longer sides of the terminal 160 are substantially parallel to the ground.

The creation method described with reference to FIG. 5 and the rendering method described with reference to FIG. 8 can be grouped together in a method for creating and restoring a composite document 900, implemented by the authoring system. and restitution 100.

In the second example, the method for creating a composite document 900 differs from the creation method according to the first embodiment described above only in that it is implemented by the creation device 120. executing the fourth computer program P4 stored in the read-only memory 162 of the terminal 160. The starting multimedia stream is then downloaded via the communication means 167 in the step S710. In addition, in the second example, step S1000 of the rendering process is not performed. The authoring and rendering system 100 makes it possible to create, from the starting multimedia stream (for example a movie), a composite document 900 containing several image sequences 850 of this starting multimedia stream. The user's terminal rendering each image sequence in a corresponding window and simultaneously, the user can view all the extracted 850 image sequences at the same time. Thus, the user is offered a composite document 900 enabling him to quickly get an idea of the content of the starting multimedia stream. During the restitution of the image sequences of the composite document 900, the user can indicate to what extent he appreciates the content of the starting multimedia stream from which the composite document 900 originates.

FIG. 10 shows a method of detecting and tracking a pointer according to the first embodiment, implemented by the detection device 140 executing the second computer program P2 recorded in the read-only memory 162 of the terminal 160. During a step S1200, a video component of at least one multimedia document is restored by the terminal 160. This step S1200 can notably correspond to the step S1020 of restitution of the rendering method described with reference to FIG. in which the image sequences 850 of the composite document 900 are output by the terminal 3035562 160. Alternatively, the multimedia document may be a multimedia stream as described above. During a step S1210, the detection and tracking module 142 detects and tracks at least one pointer on the display interface 165 and produces a result from the detection and tracking. When the display interface 165 is touch sensitive, the pointer may be a contact area on the display interface 165, for example a contact area between a finger or a stylus-like object and the display interface. 165. The pointer can be furthermore a pointer of a pointing device 10 such as a computer mouse or a remote control such as a joystick. The result obtained can be for example a displacement of the pointer on the interface of the computer. 165, or a duration during which the pointer is positioned on a predetermined area of the display interface 165 and / or the position of the pointer on the display interface 165. In one example, when the 850 images of the composite document 900 are restored, the output of the detection and tracking module 142 is directed to the analysis device 150, while in normal times, when the components of a multimedia stream are restored by the reader 20 multimedia 166, this e output is directed to this media player 166, so that the user can give orders to the media player 166, such as a pause of the restitution. The detected displacement thus defines an appreciation of the composite document 900. In an example where the result is a displacement, the displacement is a pointer trajectory. This trajectory is defined by a starting point, an end point, and the curve connecting these two points. If this - curve is rectilinear, the trajectory has a direction and a direction. In the example where the pointer is a contact zone, the trajectory of the contact zone is defined by a starting zone corresponding to the first contact between the finger or the object and the interface 165, a zone of contact. arrival corresponding to the last contact between the finger or the object and the interface 165, and the curve connecting these two areas. If this curve is rectilinear, the trajectory has a direction and a direction.

In another example where the result is a displacement, and where the pointer is a contact zone, the displacement is an enlargement of the contact zone. This widening is defined by a starting zone corresponding to the first contact between the finger or the object and the interface 165, an arrival zone corresponding to the last contact between the finger or the object 10 and the interface 165, and a maximum contact area corresponding to the largest area of contact area measured between the first contact and the last contact. During a step S1220, the mode change module 144 modifies the reproduction of the multimedia document, on production of the result.

In one example, this change is a closing of the multimedia document. In another example, this modification is an iconification of the multimedia document. This closure or iconification may be followed optionally by opening and restoring another multimedia document, such as the rendering of a composite document described above. FIG. 11 represents an analysis method according to the first embodiment, implemented by the analysis device 150 executing the third computer program P3 recorded in the read-only memory 162 of the terminal 160.

During a step 1300, the analysis module 152 determines from the result produced in step 51210 an appreciation and a degree of appreciation of the multimedia document. The appreciation is a positive or negative appreciation. The degree of appreciation corresponds to a value chosen from a group comprising at least three values, for example the group {0,1,2}. The terminal 160 can thus determine whether this assessment is more or less marked, for example if the user has a weakly positive or very positive opinion on the multimedia document. For example, when the result produced is a trajectory as defined above, the analysis module 152 determines said judgment as a function of the direction of the trajectory, and / or said degree of appreciation as a function of the length of the trajectory. path. A positive judgment may for example be associated with a direction of trajectory at the interface 165 and a negative judgment may then be associated with the opposite direction of trajectory at the same interface 165. A degree of appreciation may be determined as a value substantially proportional to the length of the trajectory. For example, a value of 0 may be associated with a trajectory length less than or equal to one-third of a reference length, a value of 1 may be associated with a trajectory length strictly comprised between one-third and two-thirds of the reference length, and a value of 2 may be associated with a path length greater than or equal to two thirds of the reference length.

In another example where the pointer is a contact zone and the result produced is an enlargement, the analysis module 152 determines said judgment as a function of the position of a first contact of said at least one contact zone. For example, the interface 165 may be partitioned between a first portion and a second portion, so that if the first contact is located at the first portion, then said judgment is positive, and if the first contact is located at the first portion. of the second part, that assessment is negative. In addition, the analysis module 152 determines the said degree of appreciation as a function of the widening of the said at least one contact zone.

For example, if the area of the maximum contact area between the departure zone and the arrival zone is less than 110% of the area of the departure zone, the degree of appreciation is 0; if the area of the maximum contact area is between 110 and 120% of the area of the starting zone, the degree of appreciation is 1; if the area of the maximum contact area is greater than 120% of the area of contact of the area of the starting area, the degree of appreciation is 2. In another example, the assessment and / or degree of of appreciation can be determined according to the number of paths detected. In another example, the judgment and / or the degree of appreciation can be determined according to the starting point of the trajectory. In another example, the judgment and / or the degree of appreciation can be determined according to a duration of contact between the first contact and the last contact.

In another example, the judgment and / or the degree of appreciation can be determined according to a pressure on the terminal 160 or an acceleration of the terminal 160. The method further comprises a sending step S1310. the appreciation and / or the degree of appreciation to the server 170 via the network 190 and the communication means 167 and 175. The detection and monitoring method described with reference to FIG. 10 and the analysis method described with reference to FIG. 11 can be grouped into a method for qualifying an assessment of a multimedia document, such as a composite document 900, implemented by the qualification system 110. The user can thus, by a simple gesture, give an appreciation (for example positive or negative) and a degree of appreciation on the multimedia document whose image sequences 850 are being restored. In addition, this qualification system 110 is very suitable for mobile terminals or terminals having a touch display interface, since the entire display surface can be used to provide judgment and appreciation. Following the qualification of the interest in the multimedia document 5 by the user, it is possible to determine other multimedia documents likely to please the user. FIG. 12 represents a method of recommending a multimedia document according to the first embodiment, implemented by the recommendation device 195 executing the fifth computer program P5 recorded in the read-only memory 182. The recommended multimedia document is for example a composite document different from the composite document 900 for which the judgment and / or the degree of appreciation were determined in step S1300. During a step S1400, a multimedia document is recommended by the recommendation module 188, according to the judgment and the degree of appreciation sent in the step S1310, and according to the metadata associated with said multimedia document. In one example, the metadata includes, for example, a duration, a coding format and / or a director or performer's name.

The composite documents created as previously described, for example stored in the database 198, can then be submitted in turn to the user that he also qualifies them. We then obtain a loop of refunds, qualifications and successive recommendations for various composite documents submitted to the user.

Claims (19)

REVENDICATIONS1. Terminal (160) capable of qualifying an assessment made to a multimedia document being restored by said terminal (160), said terminal comprising: a detection and tracking module (142), able to produce a result from the detecting and tracking at least one pointer on a display interface (165) of said terminal (160), a mode change module (144), adapted to modify the reproduction of the multimedia document, on production of said result, and - an analysis module (152), able to determine from said result an appreciation and a degree of appreciation of said multimedia document, the degree of appreciation corresponding to a value selected from a group comprising at least three values. 2. Device for detecting and tracking (140) a pointer on a display interface (165) of a terminal (160), a multimedia document being being restored by said terminal (160), said device comprising a detection and tracking module (142), able to produce a result from the detection and tracking of at least one pointer on said display interface (165), and - a mode change module ( 144), able to modify the restitution of the multimedia document, on production of said result. 3. Analysis device (150) able to determine an appreciation and a degree of appreciation of a multimedia document, said device comprising: an analysis module (152) able to determine, from a product result from the detection and tracking of at least one pointer on a display interface (165) of a terminal (160), a judgment and a degree of appreciation of said multimedia document, the degree of appreciation corresponding to a value selected from a group comprising at least three values. 5 4. Device according to claim 3, wherein said result is a displacement of said pointer. 5. Device according to claim 4, wherein said displacement is a trajectory of said pointer. 10 6. Device according to claim 5, wherein the analysis module (152) determines said judgment as a function of the direction of the trajectory. Apparatus according to claim 5 or 6, wherein the analysis module (152) determines said degree of appreciation as a function of the length of the trajectory. 8. Device according to claim 4, wherein: the pointer is a contact zone on said display interface (165), and said displacement is an enlargement of said at least one contact zone. Apparatus according to claim 8, wherein the analysis module (152) determines said judgment as a function of the position of a first contact of said at least one contact area. 3035562 32 10. Device according to claim 8 or 9, wherein the analysis module (152) determines said degree of appreciation as a function of the widening of said at least one contact zone. 5 Apparatus according to claim 3, wherein said result is a duration during which the pointer is positioned on a predetermined area of said display interface (165). 12. A method of detecting and tracking a pointer on a display interface (165) of a terminal (160), a multimedia document being being restored by a terminal (160), said method comprising the steps following: - production (S1210) of a result from the detection and tracking of at least one pointer on said display interface (165), and 15 - modification (S1220) of the reproduction of the multimedia document, on producing said result. A computer program (P2) comprising instructions for performing the steps of a detection and tracking method according to claim 12, when said program is executed by a detection and tracking device (140). a pointer to a display interface (165) of a terminal (160). 14. A recording medium readable by a device for detecting and tracking (140) a pointer on a display interface (165) of a terminal (160) on which a computer program is recorded ( P2) comprising instructions for carrying out the steps of a detection and monitoring method according to claim 12. 3035562 33 15. Analysis method for determining an appreciation and a degree of appreciation of a multimedia document, said method comprising the following step: determination (S1610), from a result produced from the detection and the tracking at least one pointer on a display interface (165) of a terminal (160), an appreciation and a degree of appreciation of said multimedia document, the degree of appreciation corresponding to a chosen value among a group comprising at least three values. 10 16. A computer program (P3) comprising instructions for carrying out the steps of an analysis method according to claim 15, when said program is executed by an analysis device (150). 15 A recording medium readable by an analyzing device (150), on which a computer program (P3) is recorded including instructions for carrying out the steps of an analysis method according to claim 15. 18. A server (170) able to recommend a first multimedia document, said server comprising: a recommendation module (188) able to recommend said first multimedia document according to an appreciation and a degree of appreciation of a second multimedia document determined by the analysis device according to one of claims 3 to 11, and according to metadata associated with said first multimedia document. 3035562 34 19. Method of recommending a first multimedia document, said method comprising the following step: recommendation (S1400) of said first multimedia document according to an assessment and a degree of appreciation of a second multimedia document determined according to the analysis method of claim 15, and according to metadata associated with said first multimedia document.