EP1757155A2 - Method for enhancing services concerning multimedia data in mobile telephony - Google Patents

Abstract

The invention concerns a method for enhancing the quality of use of at least one service concerning at least one multimedia data, in particular concerning photographs, video, audio, and/or text. Said service is proposed by a telecommunication provider and/or operator using a user's mobile telephone terminal. The method comprises automatically implementing before and/or during and/or after acquiring the multimedia data several functions of the terminal required for the service, said automatic implementation of functions of the terminal including the following steps: selecting, among the functions available in the terminal, the functions required for the service, automatically and/or manually setting up by said user, of at least one scenario suited to the service, said scenario consisting of logically concatenated sequences of the selected functions; the method further comprises the step, for the user, to select a specific scenario among the previously set up scenarios.

Description

 Description

[001] METHOD FOR IMPROVING SERVICES RELATING TO MULTIMEDIA DATA IN MOBILE TELEPHONY

The invention relates to a method for improving the quality of use of at least one service relating to at least one multimedia datum, this service being offered by a service provider and / or a telecommunications operator using a mobile phone terminal.

The invention also relates to a mobile telephone terminal implementing this method.

Multimedia data here means photographs, drawings, text, video, audio, audiovisual or programs.

The invention results from the observation that the use of mobile telephony terminals is not very ergonomic when it comes to using these services. For example, when it is a mobile telephone terminal equipped with an image taking apparatus and one wishes to send the photos taken by MMS, it is necessary to execute several operations or functions in succession. each other.

[006] Thus, to improve the ergonomics of the use of at least one service relating to at least one multimedia datum, this service being offered by a provider and / or a telecommunications operator using a terminal mobile telephony, the method comprises, according to the invention, the automatic implementation before, and / or during, and / or after the acquisition of multimedia data, several terminal functions necessary for the service, this automatic implementation of terminal functions comprising the following steps:

[007] - select, from the functions available in the terminal, functions necessary for the service,

[008] - establishing automatically, and / or manually by the user, at least one scenario suitable for the service, this scenario being composed of logically chained sequences of the selected functions,

The method further comprising the step, for the user, of choosing a determined scenario from the previously established scenarios.

By function, we mean an element included in the group comprising:

[011] - the choice of a service,

[012] - guiding the user, in particular assistance with the acquisition of multimedia data,

[013] - the acquisition of multimedia data,

[014] - controlling the quality of the multimedia data,

[015] - the search for multimedia data, [016] - retouching or modification of the multimedia data,

[017] - processing of multimedia data,

[018] - improving the quality of the multimedia data, in particular the quality of an image,

[019] - the combination of multimedia data, in particular text and images for a postcard,

[020] - compression of the multimedia data, in particular as a function of the characteristics of the network,

[021] - the choice of a model,

[022] - the layout presentation of the multimedia data,

[023] - entering an address or choice in a recipient base,

[024] the sending of the multimedia data and / or its transmission and / or its guidance through a network,

[025] - reception of multimedia data.

By model, we mean data which is based on a previous use of the service sent, or being sent, or received or recorded by the user in his terminal in a folder called preferably. For example, for a service for sending postcards using a mobile telephone terminal or for sending an electronic mail, the model constitutes all or part of an electronic mail or a card postal already created, sent and received or registered.

[027] In one embodiment, the user is guided by means of a terminal interface which presents the services accessible to the user via this terminal.

[028] According to one embodiment, at least part of the scenario is prerecorded, for example during a previous use of the service.

According to one embodiment, the characteristics of the multimedia data item are automatically determined according to the service selected.

When the multimedia data is an image, the characteristics of this image which are automatically determined as a function of the service selected are shooting parameters. For example, an image intended for a mobile telephone is made to benefit from a longer exposure time than an image intended for a printing service or for viewing on a computer screen because an image on a screen of Small dimensions such as that of a mobile telephone terminal are much less sensitive to camera shake than a larger image.

[031] According to an embodiment in which the multimedia data is also an image, the latter is acquired for the provision of at least two services and the characteristics of this image are the shooting parameters which are determined automatically as a function of '' at least one of the two services and the amount of light when shooting so that in low light the image can be used for minus one of the two services.

In one embodiment, at least two multimedia data are acquired for the provision of at least two services, the characteristics of each multimedia data being adapted to the corresponding service.

For example, two images of the same subject can be produced, the characteristics of which differ depending on the use of the image or the end use of the image.

[034] This arrangement can be used generally in an image acquisition device in which the use of the image or the final use of the image can be selected and the shooting parameters are selected. automatically depending on the use of the image or the end use.

[035] For example, such an image acquisition device includes the possibility of simultaneously taking an image of a subject intended for printing in a determined format such as 10 × 15 cm and an image of the same subject at full resolution.

Under these conditions, if for example the image acquisition device allows a resolution of 6 million pixels, the full resolution image will of course be taken with 6 million pixels while the image provided for a print in 10x15 format can be taken at a resolution of 2 million pixels. The reduction in resolution can be used to improve other characteristics. For example, the exposure time can be reduced, which reduces the effect of any shake. For example, since the processing time is generally proportional to the number of pixels, the decrease in resolution frees up a large amount of computing power to reduce noise in low light and extend the range of use in low light. In general, the adaptation of the shooting parameters to the end use makes it possible to choose parameters which can cause non-visible or not very visible defects and to select, in return, parameters making it possible to improve the image.

[037] These provisions can be used independently of those defined above relating to the improvement of the quality of the use of a service offered by a provider and / or a telecommunications operator for the use of a mobile telephony terminal.

[038] According to one embodiment, the method comprises, to implement the service, the step of searching for prerecorded multimedia data in the terminal.

According to one embodiment, the method comprises the step of choosing a presentation, or layout, of the multimedia data, for example using a model and / or a presentation parameter.

In one embodiment, the method comprises the step of providing automatic assistance to the user of the terminal for carrying out an acquisition of the multimedia data, in particular by helping with the framing of an image and / or with quality control. of this image, by providing courses or instructions for acquisition and / or adjustment, or by displaying the final result of the acquisition.

[041] According to one embodiment, the method comprises the step of modifying the multimedia data.

[042] In one embodiment, the method comprises the step of processing the multimedia data locally, that is to say in the terminal, or remotely, that is to say outside the terminal, in particular in a server.

[043] According to one embodiment, the method comprises the step of choosing a recipient, for example using a link with an address book and / or an automatic entry.

[044] According to one embodiment, the method comprises the step of compressing the multimedia data as a function of at least one characteristic of the network relating to its transmission rate.

According to one embodiment, the method comprises the step of inserting multimedia data relating to text into multimedia data relating to an image, called postcard.

[046] According to one embodiment, the method comprises the step of transmitting multimedia data relating to an image by means of at least one of the following communication modes: fax, telephony, electronic mail.

[047] According to one embodiment, the method comprises the step of managing an album of multimedia data specific to the user, this album being stored in a server accessible to the terminal via the telecommunications network.

[048] According to one embodiment, the method comprises the step of transmitting the multimedia data to a printing service such as a printer.

[049] The invention also relates to a mobile telephone terminal in which, to improve the quality of use of at least one service relating to at least one multimedia datum, in particular relating to photographs of video, of audio and / or text, this service being offered by a telecommunications service provider and / or operator, which includes means for the automatic implementation before and / or during and / or after the acquisition of the multimedia data, of several terminal functions necessary for the services, these means comprising:

[050] - a means for selecting, among the functions available in the terminal, the functions necessary for the services,

[051] - a means for automatically and / or manually establishing at least one scenario suitable for the service, this scenario being composed of logically chained sequences of the selected functions, and

[052] - a means so that the user can choose a determined scenario from the previously established scenarios.

[053] In one embodiment, a guide interface presents the services accessible to the user.

[054] According to one embodiment, the terminal comprises means for recording part of the scenario.

[055] In one embodiment, the terminal comprises means for automatically determining the characteristics of the multimedia data as a function of the service selected. In this case, when the multimedia data is an image, the means for automatically determining the characteristics of the image comprises means for automatically determining the shooting parameters according to the service so, for example, that an image intended to a mobile phone can benefit from a longer exposure time than an image intended for a printing service or for viewing on a computer screen.

[056] According to one embodiment, the terminal comprises means for acquiring an image for the provision of at least two services, and means for the characteristics of this image to be the shooting parameters which are determined automatically by function of at least one of the two services and the amount of light when shooting, so in particular that in low light, the image can be used for at least one of the two services.

[057] According to one embodiment, the terminal comprises means for acquiring at least two multimedia data for the supply of at least two services, and for the characteristics of each multimedia data to be adapted to the corresponding service.

[058] According to one embodiment, the terminal comprises means for searching for a prerecorded multimedia data item in the terminal to implement the service.

[059] According to one embodiment, the terminal comprises means for choosing a presentation or a layout of the multimedia data, for example by using a model and / or a presentation parameter.

[060] According to one embodiment, the terminal comprises means for providing automatic help to the user of the terminal for carrying out an acquisition of the multimedia data, in particular by helping to frame an image and / or to control the quality of 'an image, by providing courses or instructions for acquisition and / or adjustment, or by displaying the final result of the acquisition.

[061] According to one embodiment, the terminal comprises means for modifying the multimedia data.

[062] According to one embodiment, the terminal comprises means for processing the multimedia data locally, that is to say in the terminal, or remotely, that is to say outside the terminal.

[063] According to one embodiment, the terminal comprises means for choosing a recipient, for example using a link with an address book and / or an automatic entry. [064] According to one embodiment, the terminal comprises means for compressing the multimedia data as a function of at least one characteristic of the network relating to its transmission rate. [065] According to one embodiment, the terminal comprises means for inserting multimedia data relating to text in multimedia data relating to an image, called postcard. [066] According to one embodiment, the terminal comprises means for transmitting multimedia data relating to an image by means of at least one of the following modes of communication: fax, telephony, electronic mail. [067] According to one embodiment, the terminal comprises means for managing an album of multimedia data specific to the user, this album being stored in a server accessible to this terminal via the telecommunications network. [068] According to one embodiment, the terminal comprises means for transmitting the multimedia data to a printing service such as a printer. [069] Other characteristics and advantages of the invention will appear with the description of some of its embodiments, this being carried out with reference to the attached drawings in which: [070] Figures 1 and la are diagrams illustrating steps of a method according to the invention, [071] Figures lb, 2a, 2b, 2c, 3, 4, 5, 6, 7 and 8 illustrate a method according to the invention applied to the shipment of a postcard, [072] the curves of FIGS. 9, 10, 9a and 10a are charts making it possible to choose, in accordance with the invention, a compression rate and a sampling rate, and [073] the figure 11 is a diagram illustrating other steps of the method according to the invention. [074] The examples described relate mainly to a mobile telephone terminal equipped with a camera sometimes called a photophone or a camcorder. [075] Use of services

[076] The use of these terminals is tedious, when it comes to:

[077] - to configure a telephone to send images (via MMS, Wap ...),

[078] - to configure a service for a supplier; for example, to register for an online printing service, you must give your contact details, choose a collection point, etc., [079] - enter a text accompanying the photo or an address: the text is long to enter, l postal address is rarely included in the address book, etc., [080] - to use a service: it is often necessary to use several functions in succession, such as shooting , retouching and sending; the ergonomics of the plications is function oriented (camera, MMS) and not image service; some operations are very long, [081] - to use the terminal to replace a camera.

[082] Image quality

The image quality is limited by the constraints of space, power consumption and cost of mobile terminals. The quality is variable depending on the type of terminal and requires specific image processing. The quality of an image depends on how you look at it. In particular on a small screen many defects are invisible while they become visible on a print or a larger screen. [085] The images are strongly compressed to fit within the authorized bandwidth, which produces artifacts during the decompression necessary to display or print the images. [086] These are particularly troublesome drawbacks which slow down the development of the use of photo services with a mobile telephone terminal because these services are much less efficient than those linked to autonomous photographic cameras. [087] Architecture

The computation time for improving the images is generally proportional to the size of the image, that is to say to the number of pixels. [089] Improving the quality of the image consumes a great deal of computing time and therefore electrical energy. The power of the processors embedded in the terminals increases more slowly than the number of pixels of the sensors. The computing power is limited and variable depending on the type of terminal.

[091] Access to computing power is variable depending on the type of terminal: some terminals are open to code written in C ++, others only to Java code (much slower for image processing than C ++ ), others are not open. [092] The size of the local storage is limited.

The size of the transmission pipes is limited. In France it is 50kb per message and is gradually increasing to 100kb. [094] The images systematically pass through a server for the various services.

[095] To solve these problems, the invention improves the image quality and / or improves the ergonomics of use. [096] The method according to the invention takes place before the shooting and / or during the shooting and / or after the shooting. [097] To this end, as shown in FIG. 1, we start from an image 100, or, more generally, from multimedia data, and we determine a first fraction 102 of this data which must be processed in mobile phone 110 and a second fraction 104 of image 100 which must be processed in a remote server 112.

[098] As a variant, and as described below in relation to FIGS. 1b to 8, the processing of all of the multimedia data (or of a part thereof) is divided so that a first fraction of the processing is carried out in the terminal 110 and that a second fraction of the processing is carried out in the server 112.

In the example shown in FIG. 1 a, the multimedia data 120 is stored without additional compression or at low additional compression in the remote server 112. It is compressed for its transmission to the mobile telephone 110. It is also subjected to a processing as a function of the service to be provided to this telephone 110 or requested by this telephone 110. In addition, the data 120 is assigned a marking 122 linked to this data. This marking is transmitted with the data from the server to the terminal 110 in order to allow the subsequent use of the same original data 120 uncompressed when it is required by the mobile terminal or another mobile terminal. In other words, when a mobile terminal receives an image and wants to transmit it to another mobile terminal, to avoid the degradations due to compression and successive decompressions, thanks to the marking, it is possible to find the multimedia data with its quality d origin in server 112.

[100] 1. SERVICES

[101] 1.1. The various services considered using the image are:

[102] - Sending a fax from a terminal,

[103] - Sending to another terminal,

[104] - Sending to an email,

[105] - Sending to an online album,

[106] - Sending to a personal website (“moblog” in English),

[107] - Sending a postcard,

[108] - Sending a print request,

[109] - Sending a request for identity photos,

[110] - Request for a return to the sending terminal.

[111] 1.2. For each of the services:

[112] We shoot and / or we search in an album and / or we touch up with improved shooting (lessons, framing help, control, etc.),

[113] - the ergonomics of use are improved,

[114] - the image quality is improved as described below by performing local and / or remote processing on a server,

[115] - if necessary, use a photo of text (sometimes called FotoText +).

[116] 1.3. To send a fax from a terminal, you can do the following: [117] - a document containing text and / or drawings is taken,

[118] - we perform a background cleaning treatment, • locally (in the terminal) or • remote on a server and routing to a fax machine, [119] - we can enter a text,

[120] - the fax is laid out,

[121] - we send via MMS, Wap, http ..., or directly from the terminal, to a fax machine if the processing is local. [122] For sending a fax from a terminal, one can also proceed as follows: [123] - Shooting of a document containing text and / or drawings,

[124] - Bottom cleaning treatment in the terminal,

[125] - Optionally entering text,

[126] - Fax layout,

[127] - Sending via MMS, Wap, http ... to a server or directly from the terminal to a fax machine. [128] For sending a fax from a terminal, one can also proceed as follows: [129] - Shooting of a document containing text and / or drawings,

[130] - Optionally entering text,

[131] - Sending via MMS, Wap, http ... to a server,

[132] - Background cleaning treatment in a server,

[133] - Fax layout,

[134] - Routing to a fax machine.

[135] 1.4. An identity photo service includes, in one embodiment, the following steps: [136] - Shooting with framing assistance.

[137] This framing aid can be adapted to the country's standards for official documents. [138] - The framing aid makes it possible to segment the image to more easily carry out the checks below. [139] - Control of the respect of the rules: The rules which can be controlled are for example: the control of the uniformity of the background, the control of the color of the background, the control if the background is clear enough, the control of the presence of shadow on the background, control of the lighting of the face (which must not be too dark), the control of the absence of a hat or veil, the control of the absence of accessories, the control of the proportions of the face, the control that the face is of face and not of profile. [140] Control can be automatic and / or manual.

[141] In case of non-compliance with the rule: preferably the correction is automatic, and / or the correction is carried out manually by an operator, for example cleaning the background, otherwise a message is returned to the user, preferably quickly so that he can retake the photo. [142] This message indicates for example how to take a photo without the defect.

[143] - Optionally entering a text to put on the back, for example: the name, the name and the class for a school photo. [144] - Entering the recipient's postal address or the photo collection point.

[145] - Possible choice of service provider.

[146] - Possible retouching of the image (background cleaning, contrast ...). Retouching is manual by automatic transmission of the photo to an operator, and / or automatic. [147] - Transmission.

[148] This service can be adapted to the rules of a country for official documents.

[149] 1.5. Other services possible with a cameraphone (or photophone):

[150] - Character recognition.

[151] - Face recognition.

[152] - Barcode reading.

[153] - Rights management and digital signature ("watermark").

[154] - Mobile personal site (“blog”).

[155] - Template of text and photos, for example for Mother's Day or Valentine's Day or for poetry. [156] - Medical emergencies, for difficult situations, for example at sea or in the mountains. [157] - Joint report in the event of an automobile accident. An application asks the questions and indicates the photos to take to establish an observation. [158] - Remote diagnosis, for example for a plant disease.

[159] - Practical services Measurements. For example, one can measure the dimensions of a piece of furniture or other object to which an element having a determined dimension is juxtaposed, such as a credit card. Color: Calculation of assortment between the colors of two objects. For example the assortment of the color of pants with that of shoes, or the assortment between a tie and a shirt. [160] - Various services Morpho astrology: each day the horoscope is calculated and personalized from the date of birth and the face. "Morpho matching": Evaluation of the rate of agreement between two people, this rate being based on the photos of the faces. Aura: add a colored "aura" to the person (or object) on the photo. [161] - Security and identification or authentication Signature: the written signature (added to a number generated by a server for example) can be used for authentication. The photo can also be used for authentication. [162] - Professional services: Quotation: The seller coming to establish a quote sometimes needs to consult a specialist. The cameraphone provides a means of consulting the installer / supplier when drawing up the estimate. For example, an installer of roller shutter motors can consult an installer to determine the complexity of dismantling. [163] We can also validate with a client choices that emerge late to avoid delays or errors of assessment, for example authorizing a tree cutting more violent than expected, showing with the cameraphone a root that prevents the digging a trench. [164] 2. IMPROVED IMAGE QUALITY AND LAYOUT.

[165] After shooting, several techniques can be used to improve image quality and ergonomics for the user: [166] - Perform image improvement treatments.

[167] - Depending on the computing power of the terminal, its memory size, the size of the sensor, the type of service and the ease of adding functions to the terminal, perform the processing on the terminal or on a server. In this case, a data transmission format is defined. [168] - Adapt treatments to faults in the capture device. In this case, the origin of the images is identified, in particular by analysis of the signature of the device. [169] - Adapt processing to faults in the means of restitution. It is then necessary to identify the type of service and, possibly, the type of restitution means used and convey this information. [170] In the case of processing on a server: the method consists in:

[171] - extract the image from the transmitted message, [172] - improve the quality of the image,

[173] - replace the image of the message transmitted by the image thus improved.

[174] In order not to correct the images twice, they can be marked, for example by adding or modifying Exif or similar metadata.

[175] It is specified here that by metadata is meant data associated with the multimedia data and corresponding to information relating to the format of the file containing the multimedia data, and / or information relating to the compression, and / or the origin of the data, and / or the acquisition characteristics. For example, in the case of a photograph, these are acquisition parameters (such as focal length, aperture and exposure time), and / or the results of a calculation obtained from the multimedia data, for example the number of pixels.

[176] Image processing can be done in various ways:

[177] a) We do not perform local calculation (in the terminal) and the image returns to the user (teπninal) after a remote calculation (in a server).

[178] b) We calculate locally at the resolution of the terminal screen and we perform a remote calculation for the image transmitted by the service.

[179] c) We calculate locally at the resolution of the terminal screen and, for the image transmitted by the service, we decompress in the server and clean up the compression artifacts before routing, processing the image transmitted for the service can be performed locally and / or remotely.

[180] In all cases the transmission of images remotely must be carried out by adapting the size and compression to the service as well as to the size of the authorized messages as in below.

[181] Similarly, the layout can be done locally or remotely:

[182] a) We do not perform local calculation, and we return to the user after remote calculation for the image transmitted by the service.

[183] b) We calculate locally at the resolution of the terminal screen and we perform a remote calculation for the image transmitted by the service.

[184] c) We calculate locally at the resolution of the terminal screen and, for the image transmitted by the service, we decompress in the server and clean up the compression artifacts before routing.

[185] It is of course possible to apply the method described above to other types of multimedia data, in particular relating to video, and / or audio, and / or text.

[186] A method and system is thus obtained for improving the quality of use of a service, implementing at least one processing, relating to at least one multimedia data item, in particular relating to photos, and / or video. , and / or audio, and / or text, this service being offered by a telecommunications service provider and / or operator on a user's mobile phone via a network. [187] It is recalled that this method is suitable for overcoming the limitations resulting from at least one factor, affecting the quality of use, such as: [188] - the size of the multimedia data, and / or

[189] - computer resources of the mobile phone, and / or

[190] - the quality of the device for acquiring and / or the device for restoring multimedia data, [191] - the transmission characteristics of said network;

[192] - the nature of the service.

[193] Thus, the method comprises the following steps:

[194] - a priori or in real time, as a function of said factor, the fraction of the multimedia data and / or the fraction of the processing to be carried out in the mobile telephone and / or in at least one remote server connectable to the mobile telephone, [195] - each fraction of processing thus detemώed is carried out and / or each fraction of multimedia data thus determined is treated as appropriate, either on the mobile telephone or on the remote server; [196] so that, for the user, the quality of the service is increased, in particular:

[197] - the use of the service is possible with any type of multimedia data, for example photos of increasing size, [198] - the use of the service is improved for all types of teπninal,

[199] - the service result is improved in correlation with the network bandwidth,

[200] - access to the service is simplified,

[201] - the time required to obtain the service is reduced,

[202] - the result of the service is improved (better perception of photo, video, audio); [203] - access to new services is possible,

[204] - user satisfaction is increased.

[205] For the telecommunications service provider and / or operator, the provision of new services is possible. [206] This method can also comprise the following steps:

[207] - define by means of a format instructions relating to the remote processing,

[208] - for the mobile phone, transmit the instructions thus formatted to the remote server, [209] - for the server, execute these instructions.

[210] These instructions may include:

[211] - the fraction of the multimedia data and / or an identifier allowing the server to obtain this fraction of the multimedia data, [212] - the fraction of the processing to be carried out on the server, hereinafter called remote processing, in particular:

[213] - processing for improving the quality of the multimedia data, and / or

[214] - retouching processing carried out on the multimedia data, and / or

[215] - processing for shaping the multimedia data, and / or

[216] - service routing processing, and / or

[217] - processing for the provision of the service, and / or

[218] - the address of the beneficiary of the service and / or a code allowing the server to obtain the address of the beneficiary.

[219] The method further comprises the step, for the server, of transmitting the result of the execution of the instructions to the beneficiary of the service.

[220] Service means in particular:

[221] - any service, in particular the services described in this patent application,

[222] - part of a more global service, for example a remote calculation necessary for a service.

[223] By photo we mean in particular:

[224] -a photo of text and / or diagram and / or a natural image.

[225] Processing, also called correction, means in particular:

[226] - any type of processing described in this patent application,

[227] - a quality improvement treatment,

[228] - a quality improvement treatment adapted to a telephone,

[229] - placing in an album,

[230] - a layout,

[231] - a routing.

[232] IT resources include:

[233] - the computing power,

[234] - the memory capacity,

[235] - the programming language.

[236] By transmission characteristics, we mean in particular:

[237] - the bandwidth,

[238] - the charge,

[239] - the maximum size of a message.

[240] By identifier is meant in particular:

[241] - an image code (sent to the server by SMS or another means), allowing a server to find the image chosen by the user.

[242] By code, we mean in particular:

[243] - a telephone number used to find a postal address.

[244] Beneficiaries include:

[245] - the user, [246] - a third.

[247] By instruction, we mean in particular the data described in this patent application.

[248] 2.1. TYPES OF IMAGE PROCESSING

[249] The processing operations carried out on the images in the terminal and / or on the server can be as follows:

[250] - Remove or reduce all or part of the defects in the camera and / or the camera: exposure, lighting, geometric distortion, chromatic aberration, vignetting, blurring, astigmatism, white balance, saturation , demosaïsation, noise, camera shake, focus blur, compression artifact, deblocking artifact, other processing artifact, aliasing artifact (aliasing).

[251] - Remove all or part of the defects in the rendering means: terminal screen, computer screen, printing means.

[252] - Change in size (number of pixels).

[253] - Compression.

[254] - Decompression with or without removal of arte-facts.

[255] - Background cleaning in the case of text and / or drawing.

[256] - Retouch: transition to black and white, rotation, ex-traction of an area of the image, application of effect, addition of frame.

[257] - Inlay on a background or another photo.

[258] - Addition of text.

[259] - Analysis of the quality of the image to give advice to the user.

[260] 2.2 REMOTE PROCESSING INSTRUCTIONS - INSTRUCTIONS

[261] It is possible to deport part of the processing depending on the power of the terminal, the memory size, the size of the image, the possibility of programming in C ++ in the terminal, as opposed to Java programming. which is ill-suited for multimedia data processing and the type of service targeted. For the user, the processing remains in real time for the operations which require a return to this user.

[262] Information allowing to describe the remote processing (for each image, or once and for all) must be transmitted, in particular:

[263] a) The type of improvement processing to be performed on the server. These include, for example:

[264] - Correction of capture errors of the terminal of the given type for output to a computer screen.

[265] - Correction of capture faults in the shooting terminal with automatic recognition for output to a computer screen.

[266] - Correction of capture faults in the shooting terminal with recognition automatic birth for output for printing.

[267] - A cleaning of the background for a photo of text and handwritten drawing.

[268] - Correction of capture faults in the shooting terminal with automatic recognition for output to the screen of a given type of terminal.

[269] - From an analysis of the quality of the shooting.

[270] If there is no processing to be carried out, this instruction must also be transmitted, possibly by default.

[271] b) The retouching to be made to the image (rotation, cropping, adding a frame, etc.), which allows retouching in the terminal on an image reduced to the size of the screen and d '' subsequently bring the alterations to the final size.

[272] (c) The type of service and the recipient (s):

[273] - MMS: numbers.

[274] - email: addresses.

[275] - Postcard: provider.

[276] - Fax: number.

[277] - Album: provider.

[278] - Printing: service provider.

[279] - Return to the sending terminal.

[280] d) The indications for formatting the output:

[281] - Layout (color and font in particular) of postcard or other,

[282] - Insertion of photos, text, or cleaned photographed text.

[283] The formatting data must be independent of the physical format in order to allow printing in several formats. The size and position of text and image elements are determined downstream.

[284] e) The content:

[285] - recipient address (postal or other)

[286] - message

[287] - photo

[288] - photo of the text

[289] This content can be transmitted in the form of an address and / or metadata.

[290] The content can be described by a format. This format can be open (standard and / or extensible); it can be an extension of the MMS smil format. It must be compatible with any type of transport protocol (MMS, http, wap, email ...) and therefore compatible with existing networks.

[291] 2.3. PROCESSING IMPORTED IMAGE

[292] Preferably, in order to encode the images for transmission, a standard Jpeg compression program is used, which is implemented in all telephones; however, another format can also be used. The stages of image processing are as follows: [293] - Possibly preprocessing.

[294] - Possibly an optimization of the image size, the compression rate, the format (this format also includes the choice in color and black and white) of the image depending on the type of service and the size of the transmission “pipe”: taking into account the optimal compression / size curve of the image as a function of the service and the size of the pipe, as described below, if the image is already compressed, the compression and the change of size are preferably carried out in the frequency domain in order to limit the calculation time, otherwise it is compressed after the change in size. [295] - In the server: We decompress while eliminating the compression artifacts; [296] then: we remove or reduce all or part of the defects in the camera or in the case of a photo of text and / or drawing (FotoText +) we clean the background, we remove all or part of the defects in the restitution means, other treatments are applied: retouching, layout ..., we mark the image to avoid applying the same treatments several times. [297] The transfer takes place via MMS, premium MMS, email, http, Wap or other.

[298] The message can be intended for a third party and / or used on the sending terminal for example for viewing the result or obtaining advice. [299] 2.4. LOCAL TREATMENT OF A SERVICE

[300] Preferably, in order to encode the images for transmission, a standard Jpeg compression program is installed installed in all the terminals; however, another format can also be used. The image processing steps are as follows: [301] a) Possibly preprocessing.

[302] b) Then: remove or reduce all or part of the defects in the camera or in the case of a text photo and / or drawing (FotoText +) cleaning the background, remove all or part of the defects of the restitution means, apply the other treatments: retouching, layout for example. [303] c) Mark the image to avoid applying the same treatments several times;

[304] possibly optimizing the image size, the compression ratio, and the image format according to the type of service and the size of the pipe: taking into account the optimal compression / size curve of the picture depending on the service and the size of the pipe, if the image is already compressed, the compression and the size change are preferably carried out in the frequency domain in order to limit the calculation time, otherwise it is compressed after the size change. [305] d) For services using a large image: in the server, a decompression is carried out which eliminates the compression artifacts, followed, if necessary, by an enlargement to the size of use. [306] The transfer can be made directly to the end user (except in the case of a postcard) or via a service provider. [307] 2.5. SYSTEM

[308] The remote server also called correction server can be located:

[309] - in MMS-C (operator's MMS processing system),

[310] - at the entrance to MMS-C,

[311] - at the exit of MMS-C,

[312] - in the WAP gateway,

[313] - in MM9,

[314] - in MM7.

[315] The following combinations of terminal and server are possible:

[316] - standard terminal and server,

[317] - terminal with application which performs image processing, without server,

[318] - terminal with application which performs image processing, with server,

[319] - terminal with application which does not carry out the processing, with server,

[320] - terminal with application which performs the processing to give an overview to the user on a reduced size image, with server. [321] The processing intended for a return to the user can be done:

[322] - locally (in the terminal), or

[323] - remotely via http or another protocol.

[324] 2.6. ADAPTING THE IMAGE TO THE PIPE SIZE

[325] Telecommunication operators limit the size of messages transmitted, for example by MMS. [326] The size of an image file depends on the content of the image. At a given number of pixels and a given perceived quality level, an image which contains a lot of details will produce a larger file than an image containing less details. [327] It is therefore necessary to automatically adapt the level of quality if we want to be able to use a service in all cases and not exceed the bandwidth allocated by the operator. [328] There are several ways to adapt this level of quality, and the optimum point depends on the use and therefore on the type of service. [329] When using a service, the images follow the following path:

[330] a) Shooting and possible compression.

[331] b) Pre-processing to optimize the size of the multimedia data, the compression rate applied to it and its format: adaptation to the bandwidth allocated by the operator, by reducing the size of the transmitted file, this reduction being effected by possible reduction in the number of pixels, and / or increase in the compression ratio. [332] c) Decompression with, preferably, reduction of the artefacts.

[333] d) Changing the number of pixels to fit the screen or printer used for the service (final number of pixels). [334] To reduce the file size, there is a compromise between the number of pixels and the compression used: [335] - this compromise depends on the final number of pixels and therefore on the type of service required and the decompression process, in particular whether or not the artifacts are reduced; [336] - after a certain level of compression, it is better to reduce the number of pixels.

[337] File size reduction operations can take place:

[338] - preferably without decompressing the image in frequency space, or

[339] - after decompressing the image, or

[340] - after decompression of the image and reduction of the artifacts.

[341] 2.7. APPLICATION EXAMPLES

[342] Examples of distribution of treatments are given below:

[343] a) Application with a 3G network

[344] This network allows rapid terminal-server exchanges. It is therefore possible to perform the processing in the server and quickly display the result on the phone. [345] We can work with any computing power on the terminal and a high number of pixels. [346] b) Application with a 2.5G network and a high-end telephone (“smartphone” in English). [347] The network does not allow rapid terminal-server exchanges. However, the terminal has high computing power. [348] Processing can be performed in the screen size image terminal to show the user a preview and quickly display the result on the phone. [349] It is therefore possible to carry out the processing at full resolution on the server without necessary return to the user. [350] c) Application with a 2.5G network and a mid-range telephone (“Featurephone” in English). [351] The network does not allow rapid terminal-server exchanges.

[352] The terminal has limited computing power and exchanges are slow. The availability of overviews for the user will be more limited, but the other advantages (ergonomics, accessibility to services ...) are preserved. [353] It is therefore possible to carry out the processing in the server by limiting the returns to the user. [354] 3. TEXT PHOTOGRAPHY SOLUTION (FotoText + component) - background cleaning [355] The invention provides a component, called “FotoText +”, which is a text scanner which allows to transform the photo of any document “of binary nature », For example composed of lines on a light background, in particular a handwritten text, a line drawing, plan or sketch, a printed text. [356] This component corrects paper defects (background cleaning): shadows, grid or lines, creases, stains, creases in the paper, and, of course, camera and lighting faults. This can be done for example by extracting information above a threshold. [357] It optimizes the level of contrast.

[358] It performs an automatic correction of the “proximity blur” of focusing, for example by applying a de-blurring mask. Indeed, cameras are set for a sharpness of 80 cm to infinity and, in general, do not have autofocus. However the photo of a text is taken at approximately 15 cm, that is to say in the blur range of the cameraphone. [359] If this defect is not very sensitive to very low resolutions (such as that of a screen: 160x120, or CIF), it is particularly sensitive from 300,000 pixels (VGA). [360] It also corrects colorimetric defects.

[361] It is compatible with very high compression. Thus, a photo of a text represents approximately 25KB, and after compression up to 5KB - to optimize the transfer. [362] After decompression and then processing, the image is returned to the print format for better superposition on a background: enlargement to 300 dots per inch or to the format of the final document. [363] The component produces lines in gray level on a uniform background.

[364] It can be used in various ways: alone: for display after shooting on a terminal screen, because the processed image is more readable than the original image, for sending to another recipient (by MMS or other), on the back of a postcard (message and / or address); in illustration of an image: In a retouching software which allows to superimpose the cleaned image on a photo by making transparent the background color by operation of mixing between the photo and a uniform color or a texture using as mask cleaned image. For each pixel, if the gray level of the cleaned image is worth IN, the photo is worth PH and the uniform color or texture is worth CO, we take CO * (l-IN) / MAXIN + PH * IN / MAXIN where MAXIN is the maximum value of all pixels in the cleaned image. [365] For example, for a postcard, the user takes two photos:

[366] (a) the photo on the front of the postcard, and

[367] b) the photo of a text / graphic written / drawn on a sheet of paper.

[368] A user interface makes it possible to position the text / graphic on the photo on the front; local or remote processing at the resolution of the terminal screen makes it possible to display a preview and facilitates the work of the user. [369] The photo of the text / graphic is processed, cleaned by removing non-uniform lighting zones to optimize readability, cleaned of the background and printed on the photo on the front. [370] In the case of a photo, in particular an identity photo, background cleaning consists in making the part of the photo other than the person photographed uniform, for example by detecting the outline of the face and filling in the exterior with uniform color. [371] 4. EXAMPLES OF SERVICES.

[372] A description will be given below, using FIGS. 1b to 8, of a service for producing postcards, also called a "photocard". [373] The figures represent the various screens of the terminal interface which presents the service to the user and guides the user. [374] The figures also show the automatic implementation of several terminal functions necessary for the service; this automatic implementation of terminal functions comprising the following steps: [375] - select, from among the functions available in the terminal, functions necessary for the service, [376] - establish automatically, and / or manually by the user, at least one scenario suitable for the service, this scenario being composed of logically chained sequences of the selected functions, [377] the method further comprising the step, for the user, of choosing a determined scenario from the previously established scenarios. The screen 10 represented in FIG. 1b corresponds to the reception when the postcard service has been selected by the user who has been guided by means of a terminal interface which presents the services accessible to the user via the terminal. It is a welcome screen which offers, at the opening, the choice between several scenarios appropriate to the service also called actions which are as shown: "new photocards", "draft", "cards sent", " cards being sent ”,“ models ”. The choice is made, using the terminal's “joystick” by selecting one of the actions. Each scenario is made up of logically linked sequences of shooting, album search, text entry, address search, layout functions. A mechanism of preferences and models makes it possible to pre-record at least part of the scenario.

[379] You can also use the “options” menu, which then displays a screen 12 allowing the user to select either the action, the preferences, or help, or the possibility of leaving the service.

[380] When selecting preferences, in the example shown in Figures 2a, 2b and 2c, the user can choose between three preferences, namely, "general" (fig. 2a), "photo" (fig . 2b) and "server" (fig. 2c) using the left or right joystick.

[381] On the screen 14 of FIG. 2a, corresponding to the “general” tab, it is asked whether the user wants to automatically load his last draft.

[382] On screen 16 (fig. 2b) corresponding to the "photo" tab of the preference section, the user is asked whether he wants to automatically display the last image used and whether he wants to use automatically the latest layout.

[383] On the screen 18 of FIG. 2c, corresponding to the “server” tab of the preference section, the user is asked which server he wants to connect to such as an MMS or http server.

[384] In Figure 3, there is shown the screen 20 displayed when the user selects an action with the option menu "Select" of screen 12 of Figure lb. Thus, a screen 20 is displayed on which we see the choice between draft, model, card to be sent and card being sent. On screen 20, the last draft is shown, which includes a photo 22 and a text 24. The option menu of screen 20 allows access to a screen 26 with an “open” command.

[385] When this “open” command has been chosen, or if a new postcard to be produced and sent has been selected in FIG. 1b, the image can be selected from the “front” (setting on page), text, “back” (layout) and address as shown in Figure 4.

[386] The screen 30 shown in FIG. 4 corresponds to the selection of an image which, as shown, indicates that it is the service of making a new postcard with the image on the front and offers the ability to take a new photo, choose the last photo taken, choose the photo pre-recorded in an album in the terminal's memory, choose a photo recently used for the same service, or finally choose a photo on a remote server. In this case, an album of multimedia data specific to the user can be managed, this album being stored on a server accessible to the user's mobile telephone terminal via the telecommunications network.

[387] To take a new photo, preferably an automatic help is provided to the user to acquire the image, by helping with the framing. This framing aid consists of superimposing a silhouette on the image which indicates to the user how to frame in different cases which he can choose on a horizontal screen (image wider than it is high) or on a vertical screen, which allows to obtain both a properly framed image and better resolution than if a later crop were performed. This framing aid respects, preferably, the "golden rule" of photography known as three-thirds: never center the subject or the horizon. The user can choose using the joystick between several use cases, for example corresponding to the following cases: close-up, bust, group, landscape, photo of text in horizontal or vertical screen.

[388] When we choose the "front" tab (Figure 5), we offer help with the layout of the front. If the user has previously chosen a preferred layout, then it is displayed directly. Otherwise, the screen, as shown, displays a list of choices, i.e. allows you to choose a layout in the terminal or to choose on a remote server, or to create a new layout. page.

[389] If we select "Choose a layout", then a choice is offered between several types of layouts, these layouts differing in color, style, dimensions, etc.

[390] If the user chooses the option "Create a new layout", then he is offered options which, in the example, are: the choice of border color, the thickness of the border, and the choice of a card with rounded edges with a choice of radii of curvature.

[391] When the user positions himself on the “text” tab of the screen 30 shown in FIG. 4, then screen 34 of FIG. 6 appears which indicates a choice between a new “smart text” text, a new "photo-text" and an existing photo-text.

[392] When we choose the "new text" option, the man / machine interface switches to the creation of a text with a standard entry or a semi-automatic entry which consists of providing several fields for the text and in each of these fields, to reuse texts already memorized. The first field is the stubbornness field which relates to the recipient: "dear friend", "dear mother", etc. A second field concerns the body of the text: "the weather is fine", "I'm having a good holiday", etc. A third field concerns the end of the text comprising the courtesy formula and a fourth field includes the signature.

[393] When the "photo-text" option is selected, a screen (not shown) is displayed to indicate to the user that he must photograph a text, for example handwritten, with advice on how to take it correctly a photo of text such as "be parallel" and "prefer uniform lighting".

[394] In one embodiment, a rectangular framing is displayed on the screen and makes it possible to determine, depending on whether it is distorted or not, whether the photo is taken at the right angle.

[395] Once the text has been composed or photographed, the user goes to the next step which corresponds to the “back” tab in FIG. 4 and which relates to the layout of the back, ie - say text. In this case, screen 36 in Figure 7 is displayed and offers the following choices:

[396] - choose the last layout,

[397] - choose the preferred layout,

[398] - choose a layout,

[399] - choose a layout on a remote server, and

[400] - create a new layout.

[401] The choice of layout which is, for example, in memory of the terminal, consists, in one embodiment, in choosing the nature of the postage stamp to be affixed and corresponding, for example, to the place where the photo is taken . It can also consist of a choice of background color.

[402] For the creation of a new layout, a choice of fonts, a font size, a general color and a stamp is proposed.

[403] Figure 8 shows the screen 38 which is selected when the user has chosen the "address" tab of the screen of Figure 4. If the terminal already has an address book or a list of contacts , then the recipient is chosen from this contact list via the "option" box (screen 40). If this is a new contact, then the screen has several areas for the first name (which can then be chosen by using option T9), the last name, the street number, the name of the street, postal code of the city and country.

[404] Preferably, when the postal code is indicated, the corresponding city is indicated automatically and vice versa, when the city is indicated, the postal code is indicated automatically.

[405] It is also possible to choose several recipients for the same postcard.

[406] When the postcard is incomplete, a screen tells him that this postcard is not complete and asks him to choose an image, a recipient and a text, he also tells him that a back page layout (image ) by default is used and, similarly, a default front (text) layout is used.

[407] When the postcard is complete, then the sending screen indicates that the card postal is ready to be sent and offers the user to save it as a template.

[408] Finally, after selection of the sending by the user, the photo is compressed as a function of at least one characteristic of the network relating to its transmission rate (for example the maximum size of MMS messages) while optimizing the quality of the image transmitted using the protocol described below, making it possible to choose, for this optimization, the sub-sampling rate, and the compression parameters, in particular of the JPEG type. Then the photo thus compressed and the postcard are transmitted by telephone, for example by MMS. A screen then shows that the postcard has been sent and offers the user to send this card to another recipient.

[409] 5. ADAPTATION OF DATA TO BE TRANSMITTED TO THE NETWORK TRANSMISSION CAPACITY

[410] The capacities of the cameras sensors constantly increase and greatly exceed the bandwidth of the transmission protocols. For example, a VGA sensor provides 300,000 pixels and each pixel uses one byte to encode each of the three color channels, which results in a raw image of approximately 900 KB. However, most terminals are only capable of sending files, after compression, of 30 to 50 kb, or approximately 3 to 5% of the initial information in the case of a VGA sensor.

[411] On the basis of this observation, the invention proposes a method which makes it possible to optimize the quality of the image transmitted thanks to a protocol making it possible to choose, with a view to this optimization, the rate of subsampling, and the parameters compression, especially of the JPEG type.

We know that, in order to reduce the size of image files, we can, on the one hand, sub-sample this image and, on the other hand, compress it using a compression algorithm such as than the JPEG algorithm.

[413] Subsampling and subsequent resampling reduce the resolution and introduce a loss of detail as well as aliasing or spectrum aliasing phenomena.

[414] Furthermore, JPEG compression leads to a loss of information and causes the appearance of artifacts (defects) which are all the more important the higher the compression rate.

[415] However, the loss of resolution caused by resampling is not recoverable. On the other hand, artifacts caused by JPEG compression have an ordered and known distribution which makes them correctable to a certain extent. This correction is carried out for example by smoothing the edges of blocks as described in the jpeg standard or by an algorithm called JPEG CLEANER which allows decompress and correct these faults.

[416] To determine the compression rate and the sampling rate, the chart shown in FIG. 9 is used in which the compression rate is plotted on the abscissa and the sampling rate is plotted on the ordinate.

[417] This abacus has three curves corresponding to three different images.

[418] The abacus is obtained as follows: three test images have been chosen which initially have a definition of 1 mega pixel.

[419] From these images, compressed copies are generated at different rates to obtain files of given size: 200 kb, 150 kb, 100 kb, 80 kb, 60 kb, 55 kb, 50 kb, 45 kb , 40 kb, 35 kb, etc., previously resampled, the sampling rate being 90%, 80%, 70%; 60%, etc., the sampling rate being the same in horizontal direction and in vertical direction.

[420] The images are then classified by file weight and each folder is thus made up of images of the same weight, but with different definitions.

[421] To allow a comparison of the plurality of images thus obtained, the latter have been reset to the definition of the original by an interpolation calculation of bicubic type.

[422] Then, for each series of images, an experienced observer visualized on a computer screen, the different images and determined the image which he judged most satisfactory at a similar file size while noting, of course, the subsampling rate and the corresponding compression factor.

[423] It has been found that the association of the JPEG compression with a resampling of the image makes it possible to obtain better results than each of the methods used separately.

[424] It can thus be seen that the abacus in FIG. 9 allows the value of the sampling rate which gives the best image qualities to be chosen for a given compression ratio.

[425] On the abacus shown in FIG. 10, the weight of the image file in kb is plotted on the abscissa, and the sampling rate is plotted on the ordinate. The curves shown in this figure 10 define the most satisfactory image according to the weight of the file and the sampling rate.

[426] Starting from an image of 1 mega pixel which has a weight of around 3 MB without compression, to obtain a file of 30 kb, it is advantageous to sub-sample the image by 50% (which corresponds to a reduction by a factor of 4 in the number of pixels) before compressing the image. To obtain a 50 ko file, it is advantageous to sub-sample the image by 70% (ie a 2-fold decrease in the number of pixels) before compressing the image. Finally, for a file larger than 130 kb, it is preferable to use only JPEG compression, without subsampling. [427] In practice, the mobile telephone terminal has in memory the charts of FIGS. 9a and 10a also called within the meaning of the invention: the optimal curve of compression as a function of the size of the multimedia data item. FIG. 9a is an abacus with a curve 50 constituting an average of the curves in FIG. 9 and the abacus of FIG. 10a comprises a curve 52 corresponding to an average value of the curves of FIG. 10.

[428] Thus, to determine the file which will have to be sent over the network, an algorithm is provided in the mobile telephone terminal which starts from the weight of a file which the terminal can send over the network. This file weight on the abscissa in FIG. 10a corresponds to the ordinates of this same figure, a sampling rate. This sampling rate makes it possible to determine, from curve 50 of FIG. 9a, a compression rate on the abscissa of FIG. 9a. This algorithm is represented by the arrowed path which starts from a point A on the abscissa of FIG. 10a to arrive at a point B on the abscissa of FIG. 9a.

[429] However, the compression rate obtained can provide a file weight greater than that which the network can support, because, for a given compression rate, the final weight of the file depends on the amount of detail contained in the image. . This is why, in this case, the algorithm chooses a higher compression rate B ', which makes it possible to select a corresponding sampling rate thanks to the curve 50 of FIG. 9a and to verify, using the diagram in FIG. 10a, if the file weight A 'is less than the maximum admissible by the network. This iterative process continues if the weight A ′ is still too large, that is to say that a file weight A ′ is chosen which is less than A ′ until a satisfactory file weight is obtained.

[430] Of course, the optimal compression curve as a function of the size of the multimedia data can appear in the memory of the terminal in the form of the charts in FIGS. 9a and 10a but also in the form of tables of values or algorithms.

[431] Of course also, it will be possible to present in the terminal memory only the useful part of the optimal compression curve as a function of the size of the multimedia data. The useful part is for example the extract corresponding to the maximum file sizes that can pass through the networks of the different telephone operators.

[432] Modes of using images

[433] We will now describe an embodiment which can be applied both to the mobile telephone service and to an image acquisition device such as a photographic camera or a video camera.

[434] Before proceeding with this description, we specify here the meaning of the various terms used: [435] By digital image is meant an image in digital form. The image can come from a digital image acquisition device also called image capture device. The image can be a still or animated image, an image of a video sequence before shooting or an image intended to be transmitted or stored.

[436] The digital image can be represented by a set of digital values, hereinafter called gray level, each digital value being associated with a color sensitivity and a relative geometric position on a surface or a volume. Color in the sense of the invention means all the numerical values associated with the same color sensitivity.

[437] The digital image is preferably the raw image of the sensor (“raw” format in English) before demosaicing operation (“demosaicing” in English). The digital image may also have undergone processing, such as demosaicing, white balance, or subsampling.

[438] - When the digital image comes from an image capture device, the latter comprises a sensor fitted with sensitive elements. The term “sensitive element” means an element of the sensor making it possible to convert a flow of energy into an electrical signal. The energy flow can take the form in particular of a light flux, X-rays, a magnetic field, an electromagnetic field or sound waves. The sensitive elements can be, depending on the case, juxtaposed on a surface and / or superimposed in a volume. The sensitive elements can be arranged in a rectangular matrix, a hexagonal matrix or other geometry.

[439] - The invention applies to sensors comprising sensitive elements of one or more different type (s), each type having a color sensitivity, each color sensitivity corresponding to the part of the flux d energy converted into an electrical signal by the sensitive element of the sensor. In the case of a visible image sensor, the sensors generally have a sensitivity in 3 colors and the digital image has 3 colors: red, green and blue. Some sensors have a sensitivity in 4 colors: red, green, emerald, blue.

[440] - By color is also understood a combination, in particular linear, of the signals delivered by the sensor.

[441] - The invention applies with the various definitions of known sharpness. For example, the sharpness of a color can correspond to the measurement of a value called BXU which is a measurement of the blur spot area, as described in the article published in the “Proceedings of IEEE, International Conférence of Image Processing, Singapore 2004 ”, and entitled“ Uniqueness of Blur Measure ”by Jérôme BUZZI and Frédéric GUICHARD.

[442] In a simplified manner, the blurring of an optical system is measured from the image, called "impulse response", from an infinitely small point located in the plane of sharpness. The parameter BXU is the variance of the impulse response (i.e. its mean area). Processing capabilities may be limited to a maximum value of BXU.

[443] Various methods of measuring such clarity are described in manuals and publications such as, for example, the "Handbook of Image & Video processing" edited by Al Bovik and published by Académie press, pages 415 to 430.

[444] In one embodiment, the sharpness is obtained by calculating a gradient. For example, the sharpness can be obtained by calculating a gradient of 9 gray levels taken in neighboring geometric positions.

[445] In one implementation:

[446] An image capture device is, for example, a disposable camera, a digital camera, a reflex camera (digital or not), a scanner, a fax, an endoscope, a camera, a camcorder, a surveillance camera, a toy, a camera or a camera integrated or connected to a telephone, a personal assistant or a computer, a thermal camera, an ultrasound machine, an MRI (magnetic resonance) imaging device, an x-ray X-ray machine.

[447] - The term “optical image capture system” means the optical means making it possible to restore images on a sensor.

[448] - By image sensor is meant mechanical, chemical or electronic means allowing the capture and / or recording of an image.

[449] - By servo system, or servo, means mechanical, chemical, electronic, or computer type allowing elements or parameters of the device to meet a set point. These include the autofocus system, automatic white balance control, automatic exposure control, optical control, for example to maintain consistent quality images, an image stabilization system, an optical and / or digital zoom factor control system, or a saturation control system, or a contrast control system.

[450] - The digital image processing means can take various forms depending on the application.

[451] The digital image processing means can be integrated, in whole or in part, into the apparatus, as in the following examples:

[452] - An image capture device which produces modified images, for example a digital camera which incorporates image processing means.

[453] - An image rendering device which displays or prints modified images, for example a video projector or a printer including processing means images. [454] - A mixed device which corrects defects in its elements, for example a scanner / printer / fax machine including image processing means. [455] - A professional image capture device which produces modified images, for example an endoscope including image processing means. [456] The image processing means can be deported in whole or in part to a server. [457] Camera setting, shooting setting:

[458] By setting the camera or shooting parameter, we mean an explicit setting such that, in the case of a photophone, a setting for sending an image to another mobile phone or to a printing service, or implied such that, always in the case of a photophone, a recipient telephone number entered by the user for sending a message, or even automatic, for example the automatic exposure setting in light function. [459] The camera settings or shooting parameters include one or more of the following: [460] - The mode of use, for example: automatic, aperture priority, speed priority, portrait, landscape, sport , night. The use has in particular an influence on the ISO sensitivity, the exposure time, the noise, the blur. [461] - Manual exposure correction which has an influence on noise and contrast in particular. [462] - The ISO sensitivity setting which has an influence on noise and camera shake in particular. [463] - The setting of the exposure time which has in particular an influence on the blurring of camera shake.

[464] - the aperture setting which in particular has an influence on the blurring.

[465] - The focus adjustment which has an influence on the blurring in particular.

[466] - Macro mode, which notably has an influence on blurring.

[467] - The white balance setting, for example: automatic, tungsten, fluorescent, halogen, sunny, covered, shaded, which has an influence on color in particular. [468] - The contrast adjustment, for example: strong, normal, weak, which in particular has an influence on the contrast. [469] - The sharpness setting, for example: strong, normal, weak, which notably has an influence on the blurring. [470] - The resolution setting which has an influence in particular on the details and the sharpness.

[471] - The digital zoom setting which has an influence on the details in particular.

[472] - The color rendering setting, for example: color, black and white, sepia, saturated, which has an influence on color in particular. [473] - The setting of the output color space, which in particular has an influence on the color. [474] - The maximum value for digital zoom factor. To deactivate the zoom, it is given the value 1. [475] - The parameters of the various servos.

[476] - The image processing parameters, in particular: the coefficients and tables used by the various filters and processing necessary for the construction of the color, the sharpness, the contrast, the details and the reduction of the noise , the demosaicing parameters, “tone curve” (which is a correspondence table used to adapt the dynamic range of the sensor signal, for example 10 bits, to the dynamic range of the image signal, for example 8 bits), noise reduction, white balance, interpolation. [477] - The other fixed or variable parameters depending on the image and having an influence on the image or on the image delivered by the service. [478] - An indication of the end use of the image in the form of one or more services and / or in the form of the number of pixels necessary for use and / or in the form of the type of peripheral restitution (in particular device screen, printing, enlargement ...) and / or in one of the forms described below. [479] The indication of the end use of the image can be done in different ways: when creating a message for a particular service, for example: for a postcard service on mobile after the request for creation of postcard, for an MMS service on mobile, after the choice of the recipient, which allows, if it is a postcard service number or address, to know that the image will be printed, s 'it is an email address to know that the image is going to be used on a computer screen or for printing, if it is a mobile phone number to know that the image is going to be used on a mobile screen, via a setting made by the user, via a setting made by the service operator, via a setting made by the manufacturer or seller of the phone, in order to favor certain types of services, via a history of the uses of images. [480] Use of the image:

[481] In the case where the multimedia data is an image, by service is meant in particular services as described above but also services corresponding to a specific use of the image, the service not necessarily being offered by a service provider but can also be provided by the user himself or by a third party, in in particular, the use of the determined image can correspond to uses for sharing images (on a small screen, on a computer screen, on a print, on an electronic or physical medium) and memory (archiving for subsequent consultation by printing or saving the image file) such as:

[482] - the display on a small screen, usually less than 100,000 pixels, in particular: the screen of the acquisition device, or the screen of another device or the screen of a multimedia data storage device,

[483] - display on a large screen, usually from 1 to 2 million pixels in particular: a computer screen, a television set, a projector,

[484] - printing in standard format (10cmxl5cm approximately), usually 2 million pixels,

[485] - the enlargement, by several million pixels,

[486] - retouching,

[487] - archiving on electronic media (hard disk, CD, DVD ...).

[488] The services can be grouped according to the number of pixels necessary for use:

[489] - use in small size, for example 100,000 pixels,

[490] - use in standard size, for example at 1 to 2 million pixels,

[491] - use in maximum size possible.

[492] In one embodiment, the quality of use of the service is increased by using image usage information. This information can be:

[493] - indicated directly by the user: by indicating a service to be used, by indicating a maximum size for using the image,

[494] - calculated from an image quality setting, from other settings.

[495] Prior art

[496] We will now describe the functions of an apparatus as currently produced without the provision of the invention which will be described later.

[497] The camera generally has an image resolution setting.

[498] Image acquisition includes all or part of the following steps:

[499] - enslavement of the exposure before shooting,

[500] - enslavement of the development before shooting, [501] - servo control of the white balance before shooting,

[502] - display of a reduced-size video before shooting,

[503] - acquisition of a “raw” image using all or part of the sensor, according to the digital zoom (only the center is used) and possibly the resolution,

[504] - demosaicing of the image by interpolation of the missing colors in each pixel

[505] - application of a tone curve in English,

[506] - white balance correction,

[507] - noise reduction,

[508] - increased sharpness,

[509] - switching to the output color space,

[510] - interpolation to reach the requested resolution from the available pixels.

[511] - compression,

[512] - marking of the image for sending by email, printing.

[513] Example of realization

[514] We will now describe an embodiment of the invention in which the multimedia data is an image, the characteristics of this image being the shooting parameters which are determined automatically according to the service, in such a way that an image intended for a mobile telephone can benefit from a longer exposure time than an image intended for a printing service or for viewing on a computer screen.

[515] Thus this embodiment is more particularly suited to the case where:

[516] - the multimedia data is an image,

[517] - the improvement in the quality of use corresponds to an improvement in the quality of the image,

[518] - the device can be a terminal but also a camera or any other device linked to the image as described above,

[519] - the use of the image is known, it having been determined or calculated as described above, in particular from the service.

[520] In this embodiment, the method comprises the step of automatically determining the characteristics of the multimedia data as a function of the service selected. The characteristics of this image being the shooting parameters.

[521] In this example, the shooting parameters are determined to optimize the image for using:

[522] - the image in small size and / or,

[523] - the standard size image and / or,

[524] - the image in maximum size.

[525] The method comprises at least one of the following steps:

[526] - adapt the digital zoom according to use, [527] - adapt the exposure control according to the use,

[528] - adapt the number of pixels acquired according to use,

[529] - adapt demosaicing according to use,

[530] - adapt the increase in sharpness according to the use,

[531] - adapt the noise reduction according to the use.

[532] The example below corresponds to a 4 million pixel sensor.

[533] A digital zoom consists in using only the central zone of the sensor. Thus for a digital zoom x2, only the central quarter of the pixels of the sensor are kept.

[534] To adapt the digital zoom to use, a maximum zoom factor can be calculated so that the number of pixels acquired is close to the number of pixels for using the image. For example :

[535] - for use in a small size, the digital zoom is limited to the square root of (4,000,000 / 100,000), or approximately 6,

[536] - for use in standard size, the digital zoom is limited to the root of (4,000,000 / 1,000,000), ie 2,

[537] - for maximum size use, digital zoom is prohibited.

[538] The exposure control measures the amount of light on the sensor, and adjusts the exposure time, the aperture and the gain of the sensor (linked to the ISO sensitivity) according to the camera settings to reach target exposure.

[539] To adapt the exposure control according to use, you can:

[540] - increase the exposure time for smaller use sizes, because camera shake is less visible in a small image; we will get a lower noise,

[541] - take into account the reduction in the number of pixels acquired and the noise reduction to set a higher gain.

[542] To adapt the number of pixels acquired according to use:

[543] - One can, for small and / or standard use sizes, acquire 4 times the number of use pixels (for example for use in small size at 100,000 pixels, an image of 400,000 is acquired pixels), which simplifies the calculations per pixel: one can simplify the demosaicing by the known method of superposition of 4 neighboring pixels instead of using an interpolation to reconstruct the missing colors in each pixel. We will thus obtain a smaller image, which makes it possible to reconstruct the color, contrast, sharpness and details all the more quickly (these calculations being proportional to the number of pixels), to simplify the sharpness calculations per pixel because we can reduce the size of the sharpness filter, the latter being all the less complex the lower the resolution, which finally makes it possible to have much more computing power to reduce the noise.

[544] - It is also possible, when the amount of light is low, to acquire the raw image, to carry out a rapid demosaicing to obtain an image 4 times smaller, continue the processing of conversion into a visible image on this reduced image, and use the computing power thus released to carry out a much more complex noise reduction processing.

[545] For example:

[546] - if the processing for converting the raw image of the sensor into a visible image corresponds to 150 operations per visible pixel, including 25 to reduce noise;

[547] - if the processing for converting the raw image of the sensor into a visible image with simplified demosaicing corresponds to 100 operations per visible pixel, including 25 to reduce noise;

[548] - then we can add 500 operations per visible pixel to reduce the noise, which makes it possible to use a calculation 20 times more complex than the 25 noise reduction operations. Indeed, 100 + 500 operations per pixel on 4 times less pixels corresponds to the same computing power as 125 + 25 on all the pixels.

[549] Thus, the shooting parameters were automatically determined as a function of the service and the amount of light during the shooting, since instead of providing an image unusable for the service, an image was provided with 4 times less detail, but with a significantly reduced noise level, for example from 6 to 9dB, which makes the image usable.

[550] To adapt demosaicing according to use:

[551] - one can acquire 4 times the number of pixels of use, and simplify the demosaicing by the known method of superposition of 4 neighboring pixels.

[552] To adapt the noise reduction according to the use, it is possible, as described above, to release computing power, which makes it possible to reduce the noise by using a wider neighborhood of the pixel for example by using an algorithm as described in the article by Carlo Tomasi and Roberto Manduchi, "Bilatéral Filtering for Gray and Color Images", pages 839-846, in proceedings of International Conférence in Computer Vision, 1998.

[553] Unlike existing devices, which produce an image at the requested size, the invention makes it possible to obtain an image of maximum quality, in particular in low light, compatible with use by adapting the acquisition, the size and the treatments.

[554] This embodiment of the invention can also be used:

[555] - for the acquisition of two images of the same scene in low light, with “small” and “large” image size adjustments or an equivalent in terms of service selection,

[556] With the invention, there is a range of quantity of light for which the small image is of better quality than the reduced large image.

[557] When the exposure time and the gain (ISO sensitivity) are available in the data in Exif format of the images, the parameters will be significantly different between the 2 images. [558] Use in small size

[559] We will now describe an embodiment of the invention more particularly suitable for using the image in small size. To illustrate this embodiment, a 4,000,000 pixel sensor is considered, the invention however being applicable to any sensor size. [560] One or more shooting parameters can be determined, in particular:

[561] - the maximum value of the digital zoom: for use in small sizes, the digital zoom with square root is limited to (4,000,000 / 100,000), or about 6, [562] - the exposure time which can be set to 1/15 for a sensitivity varying from ISO 100 to 3200, then increase beyond ISO 3200, [563] - the sensitivity which can vary between ISO 100 and 3200,

[564] - the size of the raw image fixed at 4 times the number of pixels of use, 400,000 pixels in the example, [565] - the demosaicing method: we can simplify the demosaicing by the known method of superimposition of 4 neighboring pixels, [566] - the noise reduction parameters: we use a larger neighborhood for example 256 pixels, [567] - the sharpness parameters: we use a smaller filter, for example 3x3

[568] Use in standard size

[569] We will now describe an embodiment of the invention more particularly suitable for using the image in standard size. To illustrate this achievement, we consider a 4,000,000 pixel sensor; however, the invention is applicable to any size of sensor. [570] One or more shooting parameters can be determined, in particular:

[571] - the exposure time which can be fixed at 1/60 for a sensitivity varying from ISO 100 to 800, then increase beyond ISO 800, [572] - the sensitivity which can vary between ISO 100 and 800,

[573] - the size of the raw image fixed at 4 times the number of pixels of use, 4,000,000 pixels in the example, [574] - the demosaicing method: we can simplify the demosaicing by the known method superimposition of 4 neighboring pixels, [575] - the noise reduction parameters: we use an average neighborhood for example 64 pixels, [576] - the sharpness parameters: we use a larger filter, for example 5x5.

[577] Maximum size use

[578] We will now describe an embodiment of the invention more particularly suitable for using the image in maximum size. To illustrate this embodiment, a 4,000,000 pixel sensor is considered, the invention however being applicable to any sensor size.

[579] One or more shooting parameters can be determined, in particular:

[580] - the exposure time which can be fixed at 1/60 for a sensitivity varying from ISO 100 to 400, then increase beyond ISO 400,

[581] - the sensitivity which can vary between ISO 100 and 400,

[582] - the size of the raw image fixed at 4,000,000 pixels in the example,

[583] - the demosaicing method: an interpolation is used to calculate the missing colors in each pixel,

[584] - the noise reduction parameters: a smaller neighborhood is used, for example 16 pixels,

[585] - the sharpness parameters: a larger filter is used, for example 5 × 5.

[586] Maximum size use, taking into account the light

We will now describe an alternative embodiment of the invention in which the multimedia data is an image, the multimedia data is acquired for the provision of at least two services, the characteristics of this image being the parameters for taking views which are automatically determined as a function of at least one of the two services and of the quantity of light when shooting, so, in particular, that in low light, the image is usable for at least one of the two services. This embodiment is more particularly suitable for using the image in maximum size and taking light into account. To illustrate this embodiment, a 4,000,000 pixel sensor is considered, the invention however being applicable to any sensor size.

[588] In this case:

[589] - If there is enough light, it is possible to obtain a good quality image with full resolution.

[590] - Below a first light threshold, it is not possible to obtain a good quality image at full resolution. It is therefore preferable to reduce the resolution of the image, which makes it possible to optimize the quality of the image in standard size. It is then possible to enlarge the image thus obtained to obtain a full resolution image with good colors, good contrast, good sharpness, with low noise, even if the details will not be very fine.

[591] - Below a second light threshold lower than the first threshold, it is not possible to obtain a good quality image of standard size. It is therefore preferable to reduce the resolution of the image which makes it possible to optimize the quality of the image in small size. It is then possible to enlarge the image thus obtained to obtain a standard resolution image with good colors, good contrast, good sharpness, with low noise, even if the details will not be very fine. [592] The shooting parameters will thus have been automatically determined as a function of at least two uses of the image and of the quantity of light during the shooting to improve the quality of the image for at least one use. [593] The amount of light is determined by the exposure control according to a known method. [594] One or more shooting parameters can be determined, in particular,

[595] - Above the first light threshold, an attempt is made to obtain an image of 4,000,000 pixels: the exposure time can be fixed at 1/60 for sensitivities varying from ISO 100 to ISO 400, then increase beyond ISO 400, the sensitivity can vary between ISO 100 and ISO 400, the size of the raw image is fixed at 4,000,000 pixels in the example, the demosaicing method uses an interpolation to calculate the missing colors in each pixel and so, obtain a visible image of 4,000,000 pixels, the noise reduction parameters: we use a smaller neighborhood, for example 4 pixels, the sharpness parameters: we use a larger filter, for example 5x5. [596] - Between the first and the second light threshold, an attempt is made to obtain an image of 1,000,000 pixels: the exposure time can be fixed at 1/60 for a sensitivity varying from ISO 100 to 800, then increases beyond ISO 800, the sensitivity can vary between ISO 100 and 800, the size of the raw image is fixed at 4 times the number of pixels of use, 4,000,000 pixels in the example, the demosaicing method: we can simplify the demosaicing by the known method of super-position of 4 neighboring pixels, the noise reduction parameters: an average neighborhood is used, for example 64 pixels. [597] - Below the second light threshold, an attempt is made to obtain an image of 100,000 pixels: the maximum value of the digital zoom: for use in small size, the digital zoom is limited to the square root of (4,000 000 / 100,000), i.e. around 6, the exposure time can be fixed at 1/15 for a sensitivity varying from ISO 100 to 3200, then increase beyond ISO 3200, the sensitivity can vary between ISO 100 and 3200, the size of the raw image is fixed at 4 times the number of pixels of use, 400,000 pixels in the example, the demosaicing method: we can simplify the demosaicing by the known method of superposition of 4 neighboring pixels , the noise reduction parameters: we use a larger neighborhood, for example 256 pixels, the sharpness parameters: we use a smaller filter, for example 3x3. [598] Similarly, for use in standard size, light can be taken into account to use the parameters corresponding to use in small size, if the light is below the second threshold. In a device using the invention, the resolution of the image is automatically reduced when the light is reduced beyond a threshold. [600] Use with at least two services.

[601] In one embodiment, at least two multimedia data are acquired for the supply of at least two services, the characteristics of each multimedia data being adapted to the corresponding service. [602] This embodiment is more particularly suited to the case where one wishes to be able to carry out a use in two different sizes, for example: [603] - small and standard: this case corresponds, for example, to services, for a mobile terminal , sending to a mobile and sending to an email / print / postcard. [604] - standard and maximum: this case corresponds, for example, for a camera, to services, on the one hand, standard printing or use on a computer and, on the other hand, enlargement. [605] Usually the image is acquired for the maximum size and then the image size is reduced. In this embodiment, two images are acquired, the shooting parameters of each image being adapted to each use in order to optimize the quality of the image during each use. Thus, in low light, the use of the smallest size will have an improved quality compared to the usual methods. [606] For example, if you want to use in standard size and use in small size, you can determine the shooting parameters for each shot as follows: [607] - Image for use in standard size: time exposure can be fixed at 1/60 for a sensitivity varying from ISO 100 to 800, then increase beyond ISO 800, the sensitivity can vary between ISO 100 and 800, the size of the raw image is fixed at 4 times the number of pixels in use, 4,000,000 pixels in the example, the demosaicing method: demosaicing can be simplified by the known method of superposing 4 neighboring pixels, the noise reduction parameters: an average neighborhood is used, for example 64 pixels. [608] - Image for use in small size: the maximum value of the digital zoom: for use in small size, the digital zoom is limited to the square root of (4,000,000 / 100,000), or about 6, the time exposure can be set to 1/15 for a sensitivity varying from ISO 100 to 3200, then increase beyond ISO 3200, the sensitivity can vary between ISO 100 and 3200, the size of the raw image is fixed at 4 times the number of pixels of use, 400,000 pixels in the example, the demosaicing method: we can simplify the demosaicing by the known method of super-position of 4 neighboring pixels, the noise reduction parameters: we use a neighborhood larger for example 256 pixels, the sharpness parameters: we use a smaller filter, for example 3x3. [609] Figure 11 illustrates very schematically, these provisions of the invention. When the camera of a photophone 200 takes a photograph intended for a printing service 202, as indicated by the user through a corresponding menu, the exposure time is automatically determined at 1/60 ^me second in order to minimize the risk of camera shake. When the user of the photophone 200 has indicated that the photograph to be taken 204 is intended to be viewed on the screen 206 of the photophone 200, then the maximum exposure time is limited to 1/15 ^me of a second because on the screen of small dimension the blurring of camera shake is less sensitive. Finally, when the amount of light in the scene is less than a first threshold, the characteristics of the photograph 202 are adapted: 4 times fewer pixels and greater noise reduction in order to make the photograph usable, even if the details are reduced. [610] Furthermore, if the user has indicated, in a corresponding menu, that he wishes to use the photo for the two services, namely sending to a printing service 202 and observation on the screen 206, if the optimal shooting parameters differ for these two services, the camera will take two successive shots, each being optimized for the corresponding service. [611] It should be noted that these provisions are, as indicated above, applicable to any camera, in particular of the photo or video type. Thus, the shooting parameters can be adapted to the end use: [612] - the parameters optimized for observation on a device display screen not being, for example, the same as the optimized parameters for a enlargement, [613] - the parameters optimized for the observation of an image taken in low light on an impression not being the same as the parameters optimized for the observation of an image taken in stronger light on an impression .

[614] [615]

[616]

Claims

1. Method for improving the quality of use of at least one service relating to at least one multimedia datum, in particular relating to photographs, video, audio, and / or text; this service being offered by a service provider and / or a telecommunications operator using a mobile telephony terminal of a user; this process comprising the automatic implementation before and / or during and / or after the acquisition of the multimedia data, of several functions of the terminal necessary for the service, this automatic implementation of functions of the terminal comprising the following steps: - select , among the functions available in the terminal, the functions necessary for the service, - establishing automatically, and / or manually by said user, at least one scenario suitable for the service, this scenario being composed of logically chained sequences of the selected functions; the method further comprising the step, for the user, of choosing a determined scenario from the previously established scenarios.

2. Method according to claim 1 wherein the user is guided by means of an interface of the terminal which presents the services accessible to the user via the terminal.

3. Method according to claim 1 or 2 wherein at least part of the scenario is prerecorded, for example during a previous use of the service.

4. Method according to one of claims 1 to 3 comprising the step of automatically determining the characteristics of the multimedia data according to the selected service.

5. Method according to claim 4 wherein the multimedia data is an image, the characteristics of this image being the shooting parameters which are determined automatically according to the service, so, for example, that an image intended for a mobile phone can benefit from a shorter exposure time than an image intended for a printing service or for viewing on a computer screen.

6. The method of claim 5 wherein the multimedia data is an image acquired for the provision of at least two services, the characteristics of this image being the shooting parameters which are dete_rr_nes automatically based on at least one of two service and the amount of light when shooting, in particular in low light, the image can be used for at least one of the two services.

7. Method according to one of claims 4 to 6 wherein at least two multimedia data are acquired for the Ibumiture of at least two services, the characteristics of each multimedia data being adapted to the corresponding service

8. Method according to one of the preceding claims comprising the step of searching for a prerecorded multimedia data item in the terminal to implement the service.

9. Method according to one of the preceding claims comprising the step of choosing a presentation, or layout, of the multimedia data, for example using a model and / or a presentation parameter.

10. Method according to one of the preceding claims comprising the step of providing automatic help to the user of the terminal for carrying out an acquisition of the multimedia data, in particular by helping with the framing of an image and / or with the control of the quality of this image, by providing courses or instructions for acquisition and / or adjustments, or by displaying the final result of the acquisition.

11. Method according to one of the preceding claims, comprising the step of modifying the multimedia data.

12. Method according to one of the preceding claims comprising the step of processing the multimedia data locally, that is to say in the terminal, or remotely, that is to say outside the terminal.

13. Method according to one of the preceding claims, comprising the step of choosing a recipient, for example using a link with an address book and or a semi-automatic entry.

14. Method according to one of the preceding claims comprising the step of compressing the multimedia data as a function of at least one characteristic of the network relating to its trismismatic rate.

15. Method according to one of the preceding claims comprising the step of inserting multimedia data relating to text in multimedia data relating to an image, called postcard.

16. Method according to one of the preceding claims, comprising the step of transmitting multimedia data relating to an image by means of at least one of the following modes of communication: fax, telephony, electronic mail.

17. Method according to one of the preceding claims comprising the step of managing an album of multimedia data specific to the user, this album being stored in a server accessible to the mobile telephone terminal of the user via the telecommunications network.

18. Method according to one of the preceding claims comprising the step of transmitting the multimedia data to a printing service such as a printer.

19. Mobile telephone terminal in which, to improve the quality of use of at least one service relating to at least one multimedia item, in particular relating to photographs of video, audio and / or text, this service being offered by a service provider and / or a telecommunication operator, comprising means for the automatic implementation before and / or during and / or after the acquisition of the multimedia data, of several functions of the terminal necessary for the services , these means comprising: a means for selecting, from among the functions available in the terminal, the functions necessary for the services, a means for automatically and / or manually establishing, at least one scenario suitable for the service, this scenario being composed of logically chained sequences selected functions, and a means so that the user can choose a determined scenario from the previously established scenarios.

20. Terminal according to claim 19 comprising a guidance interface presenting the services accessible to the user.

21. Terminal according to claim 19 or 20 comprising means for recording part of the scenario.

22. Terrinal according to one of claims 19 to 21 comprising means for automatically determining the characteristics of the multimedia data as a function of the service selected.

23. Terrinal according to claim 22 in which, the multimedia data being an image, the means for automatically determining the characteristics of the image comprises means for automatically determining the shooting parameters as a function of the service so, for example, that an image intended for a mobile telephone can benefit from a longer exposure time than an image intended for a printing service or for viewing on a computer screen.

24. The terminal as claimed in claim 23, comprising means for acquiring an image for the provision of at least two services, and means for the characteristics of this image to be the shooting parameters which are determined automatically as a function of 'at least one of the two services and the amount of light when shooting, in particular in low light, the image can be used for at least one of the two services.

25. Terminal according to one of claims 22 to 24 comprising means for acquiring at least two multimedia data for the provision of at least two services, and for the characteristics of each multimedia data to be adapted to the corresponding service

26. Te-tninal according to one of claims 19 to 25 comprising means for searching for pre-recorded multimedia data in the terminal to implement the service.

27. Terrinal according to one of claims 19 to 26 comprising means for choosing a presentation or a layout of the multimedia data, for example by using a model and / or a presentation parameter.

28. Terminal according to one of claims 19 to 27 comprising means for providing automatic help to the user of the terminal for carrying out an acquisition of the multimedia data, in particular by helping with the framing of an image and / or the control of the quality of an image, by providing courses or instructions for acquisition and / or adjustment, or by displaying the final result of the Acquisition.

29. Terminal according to one of claims 19 to 28 comprising means for modifying the multimedia data.

30. Terminal according to one of claims 19 to 20 comprising means for processing multimedia data locally, that is to say in the terrninal, or remotely, that is to say outside the terminal.

31. Terminal according to one of claims 19 to 30 comprising means for choosing a recipient, for example using a link with an address book and / or automatic entry.

32. Terrinal according to one of claims 19 to 31 comprising means for compressing the multimedia data as a function of at least one characteristic of the network relating to its transmission rate.

33. Terrinal according to one of claims 19 to 32 comprising means for inserting multimedia data relating to text in multimedia data relating to an image, called postcard.

34. Terminal according to one of claims 19 to 33 comprising means for transmitting multimedia data relating to an image by means of at least one of the following modes of communication: facsimile, telephony, electronic mail.

35. Terrinal according to one of claims 19 to 34 comprising means for managing an album of multimedia data specific to the user, this album being stored in a server accessible to this terminal via the tele∞nraunication network

36. Terminal according to one of claims 19 to 35 comprising means for transmitting the multimedia data to a printing service such as a printer.