TH53753B - A technique for simulating film grain on an encoded video signal. - Google Patents

Abstract

DC60 (13/09/16) Film grain simulation in the encoded image is performed by separating the film grain and A characteristic is then assigned to the film grain to be encoded in the video stream. In order for the film grain to return to its original state upon decoding, the film grain is normally characterized by the type of film or otherwise based on usage. Specific models In practice The characteristics of the film grain are transmitted as messages. Parallel to the encoded video stream, which is usually the Supplemental Enhancement Information (SEI) message of the film grain. ITU-T H.264 encoding. Editing 13/09/16 The simulation of film grain in encoded images is performed by extracting the film grain and A characteristic is then assigned to the film grain to be encoded in the video stream. In order for the film grain to return to its original state upon decoding, the film grain is normally characterized by the type of film or otherwise based on usage. Specific models In practice The characteristics of the film grain are transmitted as messages. Parallel to the encoded video stream, which is usually an update message. SupplementEnhancementlnformation (SEI) of film grain when used in standard ITU-T H.264 video encoding ---------------------------------------- -------- Film grain simulation in the encoded image is performed by separating the film grain and Then the attributes are assigned to. The film grain is encoded in the video stream so that the film grain can return to its fill state when it is decoded. Normally, the film grain is characterized. Based on film accents or otherwise based on specific model usage In practice The specifics of Film grain will be delivered as a message. Parallel to the stream This is usually the Supplement Enhancement lnformation (SEI) message of the film grain when using the ITU-T H.264 video encoding base

Claims (1)

Disclaimer (all) which will not appear on the announcement page: EDIT 13/9/16 1. Film grain simulation method which includes the following steps. Receiving at least one video image encoded (14) Receiving film grain specification information (25) that comes with at least one encoded video image. Decoding of one or more of the encoded video footage and the simulation of the film grain pattern (29) in accordance with the designation information. At least one aspect of the incoming film grain and at least one aspect of the received image that film grain is. It will be added to it. 2. Method according to claim 1, which includes additional process of combining film grain. Is simulated with the decoded image 3. Method of claim 1, which includes additional procedures for Receiving video encoded (14) in ITU-T H.264 encoding format and receiving film grain characterization news (25) as a supplementary update message 4. Method, method, in accordance with claim 1, whereby the procedure of receipt of information relating to Determine the characteristics of the film grain, including the process of obtaining a strip type identifier. The film was originally used to record such encoded images. 5. Method Method according to claim 1, whereby the receiving procedure involves Define the film grain characteristics (25) and include the model identification process. Approximately film grain in the film strip, which was originally used to record such encoded images. 6. Method Method according to claim 1, whereby the receiving process involves Define the characteristics of the aforementioned film grain (25), including the reception procedures indicating the size, intensity, spatial correlation and color correlation of the film grain. 7. An additional step is to simulate the pattern of Film grain is a separate step for separate groups of images in that encoded video signal. 8. A method for simulating film grain, which consists of a process of. Encoding to video images (12) identifying film grain in the image and Producing information about film grain characterization (25) for images according to a model so that when decoding the encoded video image The film grain pattern can be Simulated according to news on film grain characterization and by at least one Characteristics of the incoming images to be incorporated into the decoded images 9. Method according to claim 8, which includes additional steps: Video encoding (12) in IYU-T H.264 video encoding format and film grain characterization news format (25) as supplementary update message 1 0. Conforming Method Right 8, whereby the process of generating information about The film grain characterization (25) is included in the process of identifying the band type. Film originally recorded encoded images 1 1. Method according to claim 8, whereby the process of generating information about Defining the film grain characteristics is incorporated into the process of identifying the model for which the film grain is applied. Identify the film grain in the film that was originally recorded 1 2. Method of claim 11 where the model identification process is included. Selection of the best model from more than one film grain model 1 3.. Method according to claim 8 wherein the process of generating information about Define the film grain characteristics, including the process of size, intensity, spatial correlation, and film grain correlation. 1 4. The method of claim 8, with an additional step, is the elimination of film. Grain leave Image before encoding 1 5. A set of equipment for simulating film grain in an image, which includes Decoder (15, 28) for encoded video images (12) and receive film grain characterization information (25), which indicates the film grain at which the video image is It was originally recorded and for image decoding and film grain restoration processor (30), used for Simulate film grain patterns based on information about incoming film grain parameters and according to At least one aspect of the received image for combining the simulated film grain pattern with the The decoded images 1 6. Equipment set according to claim 15 where the decoder will receive the information. Regarding the characterization of film grain (25), it comes in a message that is parallel to the image. Video encoded 1 7. Kit according to claim 15, where the decoder receives the encoded video (12) in the ITU-T H.264 video encoding format, and by At the machine The encoding receives a message about the film grain characterization (25). Supplemental updates news 1 8. Equipment set according to claim 15, where film grain specification message (25) includes a filmstrip type identifier that originally recorded such encoded images. To provide identification of film grain 1 9. Equipment set according to claim 15, where film grain characterization information (25) will include a model identifier that makes film grain identification which Originally recorded It is best to provide the identification of film grain 2 0. Set of equipment according to claim 15, where the film grain characterization message (25) is included. Indicates magnitude, intensity, spatial correlation. And color correlation of film grain -------------------------------------------------- -------------------------------------------------- ---------------- 1. Film grain simulation method, which consists of a procedure of - encoded image acquisition (14) - obtaining information about film characterization. Grain (25), indicating the film grain in which the encoded image was recorded initially - at least the decoding of such encoded images - simulation of the film grain pattern (29) according to News about Prescription The characteristics of the incoming film grain and - the simulated film grain pattern (29) integration with Decoded Image (16) 2. Method according to claim 1, which includes an additional step - receiving the encoded image (14) in the ITU-T H.264 encoding format; and - Receive news about film grain characterization (25) as a message Supplement Enhancement Information (SEI) 3. Method according to claim 1, whereby the process of receiving news Substance about Define the characteristics of such film grains. This includes the process of obtaining an existing film type identifier that was used to record such critical footage in the first place. 4. Procedures according to claim 1, whereby the process of receiving news. Substance about Define the aforementioned film grain characteristics (25). Include the procedure for obtaining the available model identifier. Similar to existing film grains, which are used for recording Save the image that was coded. Best first. 5. Method according to claim 1, whereby the process of receiving news Substance about The film grain characteristics (25) are included in the reception procedures indicating the size, intensity, relative relationship in space and relativeness. Correlation of color of film grain 6. Method of claim 1 which has additional steps. Pattern simulation of Film grain is kept as a separate step. For separate groups of frames in such encoded video signals. 7. A method for simulating film grain, which consists of the process of - encoding the image (12) that was originally recorded on film - film identification. The grain contained in the image as an input and - rice generation for characterizing film grain (25) for the film following a predetermined modeling process. Page so that when the encoded image is hardened, it can simulate the film grain pattern according to the news about Defining the features of Such film grain and can be combined To the decoded image. 8. Method according to claim 7, which has an additional step - Coding the image (12) in the encoding format. ITU-T H.264 video signal; and - Film-grain characterization message format (25) to Supplement Enhancement lnfomation (SEI) text. 9. Claim Method 7, whereby Episode of creation Information about The film grain characterization (25) is incorporated into the existing film type identification procedure that was initially used to record such encoded images. Hold the 7th right by the process of creating News about The film grain characterization (25) is incorporated into the model identification process that provides the best identification of the film grain in the original recorded film. 1 1. Claims Method. 10th whereby the stage of Specify the model to include. Choosing the best model from modern The distribution of film grain is more than one type 1 2. Method of claim 7 wherein the process of creation Information about Define the film grain characteristics (25), the stages of determination of size, concentration, relative relation in space and color correlation of film grain 1 3. Method according to claim 7, which has a procedure. More is Removing film grain from Image before encoding 1 4. A set of equipment for simulating film grain in an image, which includes - a decoder (15, 28) for adjusting the encoded image (12) and receiving information. Regarding the characterization of film grain (25), which indicates the film grain in which the image was recorded. Code to the original and for the critical reproduction of such images; and - Film grain restoration processor (30) for simulating the film grain pattern based on parametric news. Meter of incoming film grain and for combining the simulated film grain pattern with the aforementioned coded image 1 5. Set of equipment according to claim 14 where the detacher S Will receive the news Regarding the characterization of film grain (25) in such a way that the message is parallel to the encoded image 1 6. Set of equipment according to claim 14 where the decoder It will receive the encoded image (12) in the recording format. Video codec ITU-T H.264 and by the decoder. The code will receive news about film characterization (25) in the text Supplement Enhancement lnfomation (SEI) 1 7. Equipment set according to claim 14, where news about Film grain characterization (25) includes a type identifier. Of the existing film that was used to record the image that was entered Such code from the beginning to provide identification of film grain 1 8. Equipment set according to claim 14, where information about Film grain characterization (25) includes a mo The dl providing the best indication of film grain in the recorded film that was initially coded so that film grain 1 was identified. as It identifies good models that Most of the film grain models, more than one model 2 0. The equipment set according to the 14th claim. The film grain characterization (25) is included information that indicates size, intensity, relative space and color correlation of film grain 2. 1. A set of equipment according to claim 14, where the processor of Making film grain Return to its original state (30) replicates the group that Separate of the frames in the video signal that are encoded in such Step-by-step characteristics