Abstract: A method of cropping a 3D content comprising at least a first view and a second view is disclosed that comprises: determining a first saliency map from the first view and a second saliency map from the second view; determining a final cropping window from the first and second saliency maps; and cropping the first view and the second view according to the final cropping window.

Abstract: The present invention pertains to a method for selecting a version of a document. The user inputs an identifier of a document at the level of his receiver connected to at least one communication network, and initiates a search request to receive versions of at least one part of this document. The receiver then receives a plurality of versions of the said document. Each version received is analysed by a plurality of evaluation modules so as to calculate an evaluation value for each version received according to a predetermined criterion. The receiver selects for each of the evaluation modules a version of the document having the best evaluation in respect of this criterion, and displays the identifiers of versions having the best evaluations according to each criterion. The user can then easily select the version for reproduction thereof which best meets a criterion. The invention also relates to a receiver implementing the said method.

Abstract: Reframing is used to re-size an image or video content, e.g. for displaying video signals with a given aspect ratio on a display having a different aspect ratio. Window cropping parameters (position and size over time) are constrained in order to optimise the rate/distortion of the encoded output video signal. Initial reframing is improved by computing a saliency map representing a user attention map which considers the video coding context and by providing a macroblock coding efficiency cost map and then taking the saliency map or a combined saliency/coding cost map into account so that the coding cost for said reframed video signal is smaller than the coding cost for other candidate reframing windows' sizes and positions.

Abstract: Systems and methods of re-coloring digital images are disclosed. A system including a processor and a memory can execute stored instructions to obtain luminance information of a first image, e.g., an original grayscale image, and obtain color information of a second image, e.g., a colorized image of the original grayscale image. Multiple segmented image regions can be determined based on the luminance information of the first image. A color seed for each segmented image region can be determined based on the color information of the second image. A third image, e.g., a re-colored image, can be determined based on diffusing the color seeds of the segmented image regions.

Abstract: A method is described for inverse tone mapping the luminance (Yt(p)) of each pixel (p) of at least one image (It) of this sequence into an expanded luminance Ytexp(p)=Yt(p)Et(p). Ytenh(p), wherein Et(p) is an expansion exponent value extracted from an expansion exponent map built from low pass motion-compensated temporal filtering of said image (It) and wherein Ytenh(p) is a luminance-enhancement value extracted from a luminance-enhancement map built from high pass motion-compensated temporal filtering of said image (It).

Abstract: A method for processing a picture comprising at least one face is provided. The method comprises:—obtaining (S10) a cropping window in the picture;—processing (S18) the picture by cropping the picture part delimited by the cropping window; wherein the method further comprises detecting (S12) the at least one face, determining (S14) a weight for the detected at least one face and modifying (S16) the position of the cropping window in the picture based on the weight, wherein the weight is determined at least based on the size of the corresponding detected face.

Abstract: Method comprising, for each pixel, obtaining a pixel expansion exponent value (E?(p)) by low pass filtering luminance values of colors of pixels in its spatial neighborhood, obtaining a pixel luminance-enhancement value (Yenhance(p)) by extraction of high frequencies of luminance values of colors of pixels in its spatial neighborhood, and then inverse tone mapping the luminance (Y(p)) according to the equation Yexp(p)=Y(p)E?(p)×[Yenhance(p)]c.

Abstract: The present invention generally relates to a method and apparatus for creating an harmony map of an image. It also relates to a method and apparatus for assessing the quality of an image. The invention also relates to a method and apparatus for assessing the quality of an image such that an assessment score of the image is obtained from a perceptual map of the image created from the previous method. As an interesting tool for content creator and in the goal of maximizing the artistic effect, the proposed method provides perceptual harmony-guided quality map as well as a score of disharmony of a picture without reference image. The method links two distinct subjects: perceptual quality metric and harmonious hue templates in order to provide new tools to content creator whatever the expertise level.

Abstract: A method for processing a video is disclosed. The method comprises: obtaining a type and an angle of a template for each picture of said video independently, each template defining a portion of harmonious color values; temporally filtering said types and angles over said video; processing each picture of the video, wherein processing the picture comprises mapping the colors of the picture into the template associated with said picture and defined by said filtered type and said filtered angle.

Abstract: The present invention generally relates to a method for creating a perceptual harmony map of an image, wherein it comprises: calculating a multi-resolution decomposition of the image, at each resolution level, for each harmonious color template, computing an optimal rotation angle and an harmony distance for the hue value associated with each pixel of the image at the resolution level, and computing a harmony distance map by weighting the sum of said harmony distances, calculating a contrast map and an entropy activity map obtaining a perceptual harmony map by integrating together the contrast map the entropy activity map and the harmony distance map, and obtaining a perceptual map by accumulating the perceptual harmony maps. The invention also relates to a method and apparatus for assessing the quality of an image.

Abstract: The invention relates to a method of gaze estimation. As to determine the position of the gaze without calibrating the system used for determining the gaze, the method comprises: detecting at least a location of the centre of at least an eye on at least an eye image of a viewer watching at least a video image displayed on a screen; determining at least a first position of the gaze of the viewer on the screen by using the at least a detected location of the centre of the at least an eye and a mapping function based on centre-bias property of human gaze distribution. The invention also relates to a device configured for estimating the gaze.

Abstract: A method for harmonizing colors of an original image is disclosed. The method comprises: computing a saliency map of the original image, for each of a plurality of color harmonic schemes: determining a temporary harmonized image from the original image according to the current color harmonic scheme, computing a saliency map of the temporary harmonized image, comparing the saliency map of the original image and the saliency map of the temporary harmonized image, in order to obtain a saliency comparison result, computing a corrected color comparison result from colors of the original image, colors of the current color harmonic scheme and the saliency comparison result, selecting, as the harmonized image, the temporary harmonized image obtained with the color harmonic scheme minimizing the corrected color comparison result.

Abstract: The invention discloses an apparatus and a method of processing a multimedia content. A content processing apparatus includes: a display displaying a multimedia content and associated levels of at least one characteristic of at least two components of the multimedia content; an interface receiving a command for modifying the level of the at least one characteristic of at least one of the components with regard to at least one of the other components; and a processor modifying the at least one of the at least two components according to the level of the at least one characteristic requested by the command.

Abstract: A method for processing an image is disclosed. The method comprises: determining regions of interest in the image; determining a color histogram of the regions of interest; selecting a first template that matches the color histogram in a set of templates, each template defining a portion of harmonious color values; and processing the image, wherein processing the image comprises mapping the colors of the image into a final template, the final template being the first template.

Abstract: A method and device for eye gaze estimation with regard to a sequence of images. The method comprises receiving a sequence of first video images and a corresponding sequence of first eye images of a user watching at the first video images; determining first saliency maps associated with at least a part of the first video images; estimating associated first gaze points from the first saliency maps associated with the video images associated with the first eye images; storing of pairs of first eye images/first gaze points in a database; for a new eye image, called second eye image, estimating an associated second gaze point from the estimated first gaze points and from a second saliency map associated with a second video image associated with the second eye image; storing the second eye image and its associated second gaze point in the database.

Abstract: A color video processing method is disclosed that comprises: marking out an object from a background in each frame of a sequence of frames of a color video, selecting at least two successive frames, determining a global color template from the backgrounds of the selected frames, for each selected frame and for colors of the marked out object, determining an harmonized color according to the global color template, in such a way that the harmonized color is closer to the global color template than the original color.

Abstract: A method and an apparatus for inserting a virtual object in a video are described. The method utilizes a saliency map that characterizes the gaze allocation from a viewer on an image of the video and inserts the virtual object in the image of the video based on the saliency map. The method comprises: generating a saliency map of the image of the video after the insertion of the virtual object; and adjusting the insertion of the virtual object based on the saliency map by adjusting at least one visual characteristic of the inserted virtual object.

Abstract: A method for processing a picture is disclosed. The method according to the invention comprises: segmenting the picture into a background layer and at least another layer; selecting a background template of color harmony for the background layer; determining one template of color harmony for each of the at least another layer from the background template of color harmony depending on the distance between the background layer and said at least another layer. processing the picture by mapping the colors of each segmented layer using the corresponding template of color harmony.

Abstract: A reframing application crops a sub-part of a video source, based on its content. The reframing application involves a visual attention model that produces a saliency map, and a dedicated reframing algorithm that extrapolates a cropping window based on that saliency map. After cropping, only the reframed portion of each video image remains visible. A method for processing images of a video sequence comprises steps of determining parameters of the video sequence, parameters of a previously decoded subsequence of the video sequence and user settings, determining a portion to be cropped according to the determined parameters, and cropping in a reframing step the determined portion for being displayed. An advantage of the invention is that an advanced automatic solution is provided for tuning automatically the reframing parameters, based on the content of a video.

Abstract: A method of cropping a 3D content comprising at least a first view and a second view is disclosed that comprises: determining a first saliency map from the first view and a second saliency map from the second view; determining a final cropping window from the first and second saliency maps; and cropping the first view and the second view according to the final cropping window.