WO2016026466A1 - Procédé et appareil pour optimiser une image réalisée par "peinture de lumière" - Google Patents

Procédé et appareil pour optimiser une image réalisée par "peinture de lumière" Download PDF

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Publication number
WO2016026466A1
WO2016026466A1 PCT/CN2015/087862 CN2015087862W WO2016026466A1 WO 2016026466 A1 WO2016026466 A1 WO 2016026466A1 CN 2015087862 W CN2015087862 W CN 2015087862W WO 2016026466 A1 WO2016026466 A1 WO 2016026466A1
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Prior art keywords
image
segment
trajectory
recorded
photographic subject
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PCT/CN2015/087862
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English (en)
Chinese (zh)
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魏强
崔小辉
苗雷
里强
海茜
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努比亚技术有限公司
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Publication of WO2016026466A1 publication Critical patent/WO2016026466A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof

Definitions

  • This paper relates to the field of optimization of light-drawn images, and in particular to a method and device for optimizing light-drawn images.
  • the photo-painting photo-photographing refers to a shooting mode that uses a long-time exposure to create a special image through the change of the light source during the exposure process.
  • the use of ordinary digital cameras and mobile terminals has also achieved the use of light painting mode for photographic photography.
  • the technical problem to be solved by the present invention is to provide an optimized method for illuminating an image, in which the shooting effect of the illuminating image caused by the restriction on the photographic subject during the shooting process is single and the preparation work before the shooting is cumbersome. defect.
  • a method for optimizing a light drawing image comprising:
  • a illuminating image of the photographic subject is obtained by determining a motion trajectory of the photographic subject
  • the filling effect map is combined with the illuminating image to obtain a illuminating image after the filling effect.
  • the step of prompting the user to select a fill effect map in the pre-stored fill effect map includes:
  • the pop-up setting interface is directly displayed, and the pre-stored filling effect diagram is displayed in the setting interface, prompting to select a filling effect diagram;
  • the step of obtaining a lithographic image of the photographic subject by determining a motion trajectory of the photographic subject comprises:
  • the segments of the trajectory recorded by each of the plurality of consecutively acquired images are acquired at one time, and the segments of the trajectories are segmented according to their positions in the original image.
  • the step of acquiring a segment of the trajectory recorded by the image includes:
  • the image is compared with a previously stored background image or a previous image, and a segment of the ray trace recorded by the image is determined according to the position of the photographic subject in the image and the position of the photographic subject in the previous image.
  • the image is compared with a previously stored background image or a previous image, and the light picture recorded by the image is determined according to the position of the object in the image and the position of the object in the previous image.
  • the steps of the segment of the track include:
  • the image is a captured or called first image
  • the image is compared with a previously stored background image, and the position of the object in the image and the position of the object in the previous image are determined. a segment of the ray trace recorded by the image; if the image is not the first image captured or referred to, the image is compared with the previous image, according to the position and front of the object in the image
  • the position of the subject in an image determines the segment of the trajectory recorded by the image.
  • S301 Perform blurring on the image and the previously stored background image or the previous image
  • the image and the background image after the blurring process obtained in S301 are processed by a frame difference method, or the image and the previous image after the blurring process obtained in S301 are processed by a frame difference method to obtain a record of the image. a fragment of the light trace;
  • S402. Determine a transparency of each pixel according to a distance from each pixel to the boundary.
  • the step of determining the transparency of each pixel comprises: the more transparent the segment of the trajectory of the trajectory closer to the edge is;
  • the step of synthesizing the complete trajectory with the background image or the segment of the trajectory recorded by the image with the current base image comprises: framing the trajectory of the trajectory Blends into the current base image according to the determined transparency gradient.
  • the method further includes: buffering the illuminating image after the filling effect as a base image for subsequent shooting.
  • An apparatus for optimizing a light drawing image comprising a setting unit, a processing unit and a storage unit, wherein
  • the processing unit is configured to: obtain a illuminating image of the photographic subject by determining a motion trajectory of the photographic subject during a continuous image capturing process; and further synthesize the filling effect image and the illuminating image to obtain a filling effect After the light painting image;
  • the storage unit is configured to: store a fill effect map.
  • the setting unit is configured to prompt the user to select a filling effect diagram in the pre-stored filling effect diagram as follows:
  • the storage unit is further configured to: store the background image and the composite image formed in the entire optimization process;
  • the image is compared with a previously stored background image or a previous image, and a segment of the ray trace recorded by the image is determined according to the position of the photographic subject in the image and the position of the photographic subject in the previous image.
  • the image is a captured or called first image
  • the image is compared with a previously stored background image, and the position of the object in the image and the position of the object in the previous image are determined. a segment of the ray trace recorded by the image; if the image is not the first image captured or referred to, the image is compared with the previous image, according to the position and front of the object in the image
  • the position of the subject in an image determines the segment of the trajectory recorded by the image.
  • the processing unit is configured to acquire a segment of the trajectory recorded by the image as follows:
  • the image and the background image after the blurring process are processed by the frame difference method, or the image and the previous image after the blurring process are processed by the frame difference method to obtain a segment of the light drawing track recorded by the image;
  • a segment of the ray trace recorded by the image is extracted.
  • the processing unit is configured to synthesize the complete trajectory and the background image according to the following manner, or synthesize the segment of the trajectory recorded by the image with the current base image to obtain a composite image. :
  • the complete trajectory is combined with the background image, or a segment of the illuminating trajectory recorded by the image, with the current base image.
  • the processing unit is configured to determine the transparency of each pixel according to the distance of each pixel to the boundary in such a manner that the more transparent the segment of the light trace is closer to the edge;
  • the processing unit is configured to synthesize the complete trajectory and the background image or the segment of the trajectory recorded by the image with the current base image according to the transparency as follows: the segment of the ray trace is determined according to the determined The transparency gradient blends into the current base image.
  • the apparatus for optimizing a lithographic image according to any one of claims 10-17, wherein the storage module is further configured to buffer the illuminating image after the filling effect as a base image for subsequent shooting.
  • a computer program comprising program instructions that, when executed by a terminal, cause the terminal to perform an optimization method of any of the above-described illuminating images.
  • the method and device for optimizing the illuminating image of the technical solution of the present invention can obtain the illuminating image of the photographic subject by determining the motion trajectory of the photographic subject during the continuous image capturing process; Before or after the step of illuminating the image of the subject, a filling effect map is selected in the pre-stored filling effect map; the filling effect image is combined with the illuminating image to obtain a illuminating image after the filling effect. Not only real-time optimization of the effect of the motion trajectory is achieved, but also the ideal shot can be obtained regardless of the motion trajectory of the user. The shooting effect simplifies the preparation work before the user shoots.
  • FIG. 2 is a flowchart of a method for optimizing a light drawing image according to an embodiment of the present invention
  • FIG. 3 is a flowchart of an implementation of S202 in the embodiment shown in FIG. 2;
  • FIG. 4 is a flow chart of synthesizing a complete trajectory with a background image, or synthesizing a segment of the trajectory recorded by the image with the current base image to obtain a composite image.
  • An embodiment of the present invention provides an apparatus for optimizing a lithographic image.
  • the apparatus includes a setting unit 101, a processing unit 102, and a storage unit 103.
  • the setting unit 101 is configured to: prompt the user to select a filling effect map in the pre-stored filling effect map;
  • the setting unit 101 is configured to prompt the user to select a filling effect map in the pre-stored filling effect map as follows:
  • the first method is to directly pop up the setting interface, and display the pre-stored filling effect picture in the setting interface to prompt the user to select.
  • Method 2 Display the function entry in the form of a small icon in the preview interface, prompting the user to enter the setting interface of the filling effect diagram through the function entry.
  • the default effect map is filled or not filled.
  • the processing unit 102 is configured to obtain a illuminating image of the photographic subject by determining a motion trajectory of the photographic subject during continuous image acquisition.
  • the processing unit 102 is configured to obtain a stencil image of the photographic subject by determining a motion trajectory of the photographic subject in any of the following manners:
  • a segment of the trajectory recorded by each of the plurality of images continuously acquired (actually an area, which may be referred to as a differentiated region) is acquired at a time.
  • the segment of the trajectory of the ray is segmented according to its position in the original image to obtain a complete trajectory of the photographic object, and the trajectory is combined with the background image or the set base image to obtain a illuminating image of the photographic subject; or
  • the base image is a previously stored background image or a set base image; otherwise, the base image is a composite image obtained by the previous synthesis or a set base image.
  • the processing unit 102 is arranged to acquire a segment of the illuminating trajectory recorded by the image as follows:
  • the image is a captured or called first image
  • the image is compared with a previously stored background image, according to the position of the object in the image and the object in the previous image. a position determining a segment of the ray trace recorded by the image; if the image is not the first image captured or called, the image is compared with the previous image, according to the image in the image
  • the position and the position of the subject in the previous image determine the segment of the trajectory recorded by the image.
  • the processing unit 102 is further configured to: synthesize the filling effect map and the illuminating image to obtain a illuminating image after the filling effect.
  • the previous image and the previous base image refer to the background image.
  • the overlay can be processed according to the preset transparency.
  • the storage module 103 is configured to cache the illuminating image after the filling effect as a base image for subsequent shooting.
  • the processing unit 102 is configured to acquire a segment of the ray trace recorded by the image as follows:
  • the size of the blur radius may be based on the size of the entire image. Generally, a range of one hundredth or more of the length and width of the image can be used as the blur size. For example, a 3000x3000 image can be used with a blur radius of 30x30 or more.
  • the image and the background image after the blurring process are processed by the frame difference method, or the image and the previous image after the blurring process are processed by the frame difference method to obtain a segment of the light drawing track recorded by the image;
  • the processing unit 102 is configured to synthesize the complete trajectory and the background image in the following manner, or synthesize the segment of the trajectory recorded by the image with the current base image to obtain a composite image:
  • the complete trajectory is combined with the background image, or a segment of the illuminating trajectory recorded by the image, with the current base image.
  • Determining the transparency of each pixel according to the distance of each pixel to the boundary; according to the transparency, synthesizing the complete trajectory with the background image, or synthesizing the segment of the trajectory recorded by the image with the current base image means The extracted trajectory segments are fused into the base image, and cannot be simply replaced.
  • the gradation fusion needs to be performed according to the distance calculated above. Simply put, the more transparent the pixels in the track segment closer to the edge, then gradually fade to opaque. For example, the transparency labeled 1 is set to 10%, the transparency labeled 2 is set to 20%, and so on, the upper limit is 100%, and the segments are fused into the base image in transparency.
  • the illuminating image optimization device provided by the embodiment can be provided when performing motion trajectory shooting
  • the user selects in the effect picture of the pre-stored subject, and determines the current effect picture according to the user's selection, and then determines the current subject's motion track during the shooting process, and the effect picture along the motion track and the current
  • the basic image is synthesized, and the image obtained by the synthesis processing is buffered.
  • real-time optimization of the effect of the motion track shooting is realized, and the user can obtain an ideal image regardless of the motion track.
  • the shooting effect simplifies the preparation work before the user shoots.
  • An embodiment of the present invention provides a method for optimizing a lithographic image on the basis of the foregoing apparatus embodiment. Referring to FIG. 2, the method flow includes:
  • step S201 can be implemented in at least two ways:
  • the first method is to directly pop up the setting interface, and display the pre-stored filling effect picture in the setting interface to prompt the user to select.
  • Method 2 Display the function entry in the form of a small icon in the preview interface, prompting the user to enter the setting interface of the filling effect diagram through the function entry.
  • the default effect map is filled or not filled.
  • the step of obtaining a illuminating image of the photographic subject by determining a motion trajectory of the photographic subject may be implemented in the following two manners:
  • a segment of the trajectory recorded by each of the plurality of images continuously acquired (actually an area, which may be referred to as a differentiated region) is acquired at a time.
  • the segment of the trajectory of the ray is segmented according to its position in the original image to obtain a complete trajectory of the photographic object, and the trajectory is combined with the background image or the set base image to obtain a illuminating image of the photographic subject; or
  • the step of acquiring a segment of the trajectory recorded by the image includes:
  • the image is compared with a previously stored background image or a previous image, and a segment of the ray trace recorded by the image is determined according to the position of the photographic subject in the image and the position of the photographic subject in the previous image.
  • the previous image and the previous base image refer to the background image.
  • step S203 may perform superimposition processing according to preset transparency.
  • step S201 may also be performed after step S202, as long as the filling effect diagram is performed. It can be executed before the synthesis processing of the photo-image.
  • the size of the blur radius may be based on the size of the entire image. Generally, a range of one hundredth or more of the length and width of the image can be used as the blur size. For example, a 3000x3000 image can be used with a blur radius of 30x30 or more.
  • the image and the background image after the blurring process obtained in S301 are processed by a frame difference method, or the image and the previous image after the blurring process obtained in S301 are processed by a frame difference method to obtain a record of the image. Fragment of the light trace.
  • step A the specific implementation method for synthesizing the complete trajectory and the background image in step A, and the step of synthesizing the segment of the trajectory recorded by the image with the current base image in step B to obtain a composite image
  • steps S401-S404 are included:
  • S402. Determine a transparency of each pixel according to a distance from each pixel to the boundary.
  • Steps S402-S403 mean that the extracted trajectory segments are fused into the base image, and simple replacement cannot be performed, and the gradation fusion needs to be performed according to the distance calculated above. Simply put, the closer the pixel is to the edge, the more transparent the pixel is, and then gradually fade to opaque. For example, the transparency labeled 1 is set to 10%, the transparency labeled 2 is set to 20%, and so on, the upper limit is 100%, and the segments are fused into the base image in transparency.
  • a method for optimizing a lithographic image comprising the steps of: prompting a user to select in a rendering image of a pre-stored photographic subject after entering a shooting mode of a moving trajectory of the photographic subject; Selecting to determine a current effect map; determining a motion trajectory of the current photographic subject during the photographic process; synthesizing the effect image along the motion trajectory with the current base image; and performing the image obtained by the synthesizing process Cache as a new base image.
  • determining a current trajectory of the photographic subject includes: acquiring a current captured image and a previous captured image during the shooting; according to the current captured image
  • the current motion track is calculated by the position of the subject and the shooting position in the previous captured image.
  • the method further comprising: extracting a contour image of the motion trajectory; The image is merged with the previous base image, and the merged image is used as the current base image.
  • the synthesizing the effect map along the motion trajectory and the current base image further comprising: performing the effect map and the current base image according to a preset transparency Perform overlay processing.
  • the processing unit is further configured to: extract a contour image of the motion trajectory before synthesizing the effect map along the motion trajectory with a current base image, and The contour image is fused with the previous base image, and the fused image is used as the current base image.
  • the processing unit being further configured to: align the motion trajectory
  • the surrounding area is blurred, and the area is calculated by the frame difference method to obtain a differentiated area, and the differentiated area is subjected to a corrosion operation, and the differentiated area after the corrosion operation is expanded and extracted.
  • the image data of the differentiated region after the expansion operation is performed.
  • the processing unit being further configured to: calculate a distance from each pixel of the contour image to a boundary thereof according to the contour image, and according to a distance from each pixel to the boundary Determining a transparency of each pixel, and performing a blurring process on an area of the previous base image corresponding to the contour image, according to the transparency, according to the transparency and the previous basis The image is fused and the fused image is taken as the current base image.
  • processing unit is further configured to: superimpose the effect map and the current base image according to a preset transparency.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the terminal, so that the terminal can perform the optimization method of any of the above-mentioned illuminating images.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the optimization method of the illuminating image provided by the embodiment can prompt the user to select in the effect picture of the pre-stored photographic subject during the trajectory shooting, and determine the current effect picture according to the user's selection, and then during the shooting process. Determining a motion trajectory of the current photographic subject, synthesizing the effect image along the motion trajectory with the current base image, and buffering the image obtained by the compositing process as a new basic image, not only realizing the shooting of the motion trajectory.
  • the real-time optimization of the effect, and no matter which kind of motion track the user shoots, can get the ideal shooting effect, simplifying the preparation work before the user shoots.
  • the method and device for optimizing the illuminating image of the technical solution of the present invention can obtain the illuminating image of the photographic subject by determining the motion trajectory of the photographic subject during the continuous image capturing process; Before or after the step of illuminating the image of the subject, a filling effect map is selected in the pre-stored filling effect map; the filling effect image is combined with the illuminating image to obtain a illuminating image after the filling effect. Not only real-time optimization of the effect of the motion trajectory is achieved, but also the ideal shooting effect can be obtained regardless of the motion trajectory of the user, which simplifies the preparation work before the user shoots. Therefore, the present invention has strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Processing Or Creating Images (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

La présente invention concerne un procédé et un appareil pour optimiser une image réalisée par "peinture de lumière". Le procédé comprend les étapes suivantes: lors d'un processus continu d'acquisition d'images, la détermination d'une trajectoire de mouvement d'un objet photographié afin d'obtenir une image, réalisée par peinture de lumière, de l'objet photographié; avant ou après l'étape de détermination d'une trajectoire de mouvement de l'objet photographié afin d'obtenir une image, réalisée par "peinture de lumière", de l'objet photographié, la sélection d'un dessin à effet de remplissage parmi des dessins à effet de remplissage pré-enregistrés; et la synthèse du dessin à effet de remplissage et de l'image réalisée par peinture de lumière afin d'obtenir une image réalisée par peinture de lumière ayant un effet de remplissage. Grâce à la solution technique de la présente invention, l'effet de prise de vue de la trajectoire de mouvement peut être optimisé en temps réel, et un effet de prise de vue idéal peut être obtenu quelle que soit la trajectoire de mouvement photographiée par un utilisateur, de telle sorte que la préparation de l'utilisateur avant une prise de vue est simplifiée.
PCT/CN2015/087862 2014-08-21 2015-08-21 Procédé et appareil pour optimiser une image réalisée par "peinture de lumière" WO2016026466A1 (fr)

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CN107239205A (zh) * 2017-05-03 2017-10-10 努比亚技术有限公司 一种拍照方法、移动终端及存储介质
CN110913118B (zh) * 2018-09-17 2021-12-17 腾讯数码（天津）有限公司 视频处理方法、装置及存储介质
CN110324534B (zh) * 2019-07-10 2021-08-20 厦门美图之家科技有限公司 图像处理方法、装置及电子设备
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