CN101968892A - Method for automatically adjusting three-dimensional face model according to one face picture - Google Patents
Method for automatically adjusting three-dimensional face model according to one face picture Download PDFInfo
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Abstract
The invention relates to a method for automatically adjusting a three-dimensional face model according to one face picture, which comprises the following steps of: 1, inputting a positive character picture by a user; 2, converting a picture format by analyzing the positive character picture; 3, analyzing the positive character picture and automatically generating a series of character points; 4, adjusting the automatically generated character points; 5, adjusting the skeleton of the original model through position information of the character points and generating a new model grid part; 6, generating new skin data and new character chartlet data thorough the position information of the character points, the new model grid part and the original positive character picture; 7, generating a complete final three-dimensional virtual face model according to the new character chartlet data and the chartlet of the original model; and 8, rendering a model according to the three-dimensional virtual face model. The invention can automatically generate a natural character three-dimensional model head portrait according with the positive character picture in real time, and is especially suitable for the game manufacture, CG manufacture, three-dimensional MV manufacture and the like.
Description
Technical field
The present invention relates to a kind of faceform's of adjustment method, be specifically related to a kind of method of adjusting three-dimensional face model according to a human face photo automatically.
Background technology
It is a kind of manufacturing technology of three-dimensional animation that covering is used.On the model basis of in three-dimensional software, creating, for model adds bone.Because bone and model are separate, in order to allow the bone driving model produce reasonably motion.The technology that model is tied on the bone is called covering.
At present, the method for building up of a kind of fusion various visual angles of prior art, the human face three-dimensional model of multi thread two-dimensional signal, at first, obtain people's face progressively forwards the side to from the front when amimia variation the video sequence with demarcating good people's face of two stereo camera shooting modeling objects up and down; Obtain each accurate attitude parameter constantly in the sequence with full automatic attitude algorithm for estimating again; Then after the two the initialization of model and attitude, extract three-dimensional information respectively according to two class two-dimensional clues: a class is based between image corresponding point and carries out stereo reconstruction, and another kind of is coupling, the correction of model projection profile and image outline; At last, according to merge in various visual angles, extract, set up the faceform corresponding to the three-dimensional information of the two-dimentional clue of difference.More careful, more accurate shape that the faceform that it obtains has, and can do the compatible human face animation of MPEG4 (moving picture experts group organizational standard 4).
The comparison method based on the three-dimensional modeling of two-dimension picture of another kind of prior art comprises the steps: step 1, sets up the three-dimensional model of general people's face with computing machine; Step 2 is set up the three-dimensional model of the object person face of deploying to ensure effective monitoring and control of illegal activities on the three-dimensional model of the general people's face of step 1 by the single photo of the object person face of deploying to ensure effective monitoring and control of illegal activities; Step 3 generates the people's face picture or the face template of the object of deploying to ensure effective monitoring and control of illegal activities of various attitudes by the three-dimensional model of the object person face of deploying to ensure effective monitoring and control of illegal activities; Step 4, with people's face picture of the object of deploying to ensure effective monitoring and control of illegal activities of the original photo of the object of deploying to ensure effective monitoring and control of illegal activities and generation or face template jointly as the identification of comparing of comparison source.
The 3 D model creating system for actual human head sculpture that also has a kind of prior art, this system is made up of striped projectoscope, camera, benchmark screen, several parts of orientation for person seat.Wherein striped projectoscope, camera, orientation for person seat three form a plane, and the optical axis of striped projectoscope and camera is all on this plane; The benchmark screen is perpendicular to this plane, and the optical axis of striped projectoscope and camera is all on this plane; The benchmark screen is perpendicular to this plane, and the intersection on this two plane should overlap with the rotation axis of orientation for person seat.The striped that casts out should be vertical with this rotation axis.
The shortcoming of these prior aries is:
1, the 3 D model creating system for actual human head sculpture of this prior art can not directly utilize existing photo to set up three-dimensional model owing to adopt actual human head sculpture to set up three-dimensional model, uses trouble.
2, this prior art based on the comparison method of the three-dimensional modeling of two-dimension picture owing to directly adopt photo directly to be presented on the model as pinup picture, it is stiff move, can not with the makings picture fusion of model itself.
3, these prior art key feature points are fewer, when complicated action need be done by face, can not guarantee animation effect.
Summary of the invention
The purpose of this invention is to provide a kind of method of adjusting three-dimensional face model according to a human face photo automatically, the facial characteristics of positive character's picture that can be by various forms generates the three-dimensional model head portrait that meets the photo feature automatically, can be with the fusion of the pinup picture nature of real pictures and model itself, the three-dimensional model head portrait of generation can carry out the FA Facial Animation of nature.
The purpose that the present invention adjusts the method for three-dimensional face model automatically according to a human face photo is achieved through the following technical solutions: a kind ofly adjust the method for three-dimensional face model automatically according to a human face photo, be applied to be generated in the system that pinup picture module, pinup picture Fusion Module and application module form by picture input parsing module, unique point automatically-generating module, unique point adjusting module, skeletal system adjusting module, covering application module, photo; This method may further comprise the steps at least:
Step 1, the user imports positive character's picture of various forms.
Step 2, picture input parsing module is by analyzing positive character's picture, the conversion photo form:
Step 2.1, picture input parsing module selects to use different FaceSDK storehouses by the suffix name of input picture is classified, and the input picture is converted to the bitmap image format of standard.
Step 3, the unique point automatically-generating module is resolved positive character's picture, generates the series of features point automatically:
Step 3.1, the unique point automatically-generating module is imported the FaceSDK storehouse with photo and is resolved, and obtains the coordinate of various unique points on picture of people's face, and one has 56 human face characteristic points.
Step 4, the unique point adjusting module is adjusted the human face characteristic point of automatic generation:
Step 4.1, the characteristic point information that the unique point adjusting module will generate automatically shows on computer screen and adjusts.
Step 5, skeletal system adjusting module generate the grid part of new model by the bone of the positional information adjustment master pattern of human face characteristic point:
Step 5.1 is a benchmark with the nose characteristic point position, calculates the relative position of a unique point to the nose unique point;
Step 5.2 is the benchmark bone with nose bone position, by the unique point relative position that calculates before, calculates the position of other bone, generates new model.
Step 6, covering application module and photo generate grid part and original positive character's picture of the positional information of pinup picture module by human face characteristic point, new model, generate new covering data and new personage's pinup picture data:
Step 6.1, the covering application module is found out the different part in summit in two sets of data according to master pattern data and adjusted grid data, according to the difference on different summits, generates the covering data;
Step 6.2, photo generate the distribution of pinup picture module according to unique point, and the people face part that comprises human face characteristic point in positive character's picture is reduced, and generate new personage's pinup picture data.
Step 7, pinup picture Fusion Module generate complete final three-dimensional facial model according to the new personage's pinup picture data and the pinup picture of master pattern:
Step 7.1, the pinup picture Fusion Module becomes to put up figure with master pattern pinup picture data and newly-generated personage's pinup picture data fusion.
Step 8, application module render model according to the three-dimensional facial model in render engine.
Above-mentioned adjust the method for three-dimensional face model automatically according to a human face photo, wherein, the positive character's picture in the described step 1 is the picture of choosing arbitrarily on the computing machine.
The present invention adjusts the method for three-dimensional face model owing to adopted such scheme automatically according to a human face photo, makes it compared with prior art, has following advantage and good effect:
1, the present invention adjust three-dimensional face model automatically according to a human face photo method because by catching the facial characteristics point of positive character's picture that the user provides, can real-time automatically generation meet the characteristic 3 D model head portrait of positive character's picture.
2, the present invention adjust the method for three-dimensional face model automatically according to a human face photo can be with the fusion of the pinup picture nature of real pictures and model itself.
3, the present invention adjusts the FA Facial Animation that three-dimensional model head portrait that the method for three-dimensional face model generates can carry out nature automatically according to a human face photo.
4, the present invention's method cost of adjusting three-dimensional face model automatically according to a human face photo is low, simple to operate, is easy to popularization and application, is particularly useful for game making, CG makes and three-dimensional MV makes etc.
Description of drawings
Fig. 1 is the present invention adjusts the method for three-dimensional face model automatically according to a human face photo a process flow diagram.
Fig. 2 is the process flow diagram of the picture load module of the present invention's method of adjusting three-dimensional face model according to a human face photo automatically.
Fig. 3 is the process flow diagram of the skeletal system adjusting module of the present invention's method of adjusting three-dimensional face model according to a human face photo automatically.
Fig. 4 is the process flow diagram of the covering application module of the present invention's method of adjusting three-dimensional face model according to a human face photo automatically.
Fig. 5 is the present invention adjusts the method for three-dimensional face model automatically according to a human face photo a embodiment.
Embodiment
See also shown in the accompanying drawing 1, the present invention adjusts the method for three-dimensional face model automatically according to a human face photo, is applied to be generated in the system that pinup picture module, pinup picture Fusion Module and application module form by picture input parsing module, unique point automatically-generating module, unique point adjusting module, skeletal system adjusting module, covering application module, photo.Concrete steps are as follows:
Step 1, the user imports positive character's picture of various forms.
Step 2, picture input parsing module is by analyzing positive character's picture, the conversion photo form.
Step 3, the unique point automatically-generating module is resolved positive character's picture, automatically generate the series of features point, photo is imported the FaceSDK storehouse resolves, use the FaceSDK storehouse to come the photo of various forms is resolved, thereby obtain the two-dimensional coordinate of various unique points on picture of people's face, generate 56 unique points altogether.
Step 4, the unique point adjusting module is adjusted the human face characteristic point of automatic generation:
Step 4.1, the characteristic point information that the unique point adjusting module will generate automatically shows on computer screen and adjusts; If for example the user thinks that eyes are too little, can reach its purpose by adjusting the eye feature point.
Step 5, skeletal system adjusting module generate the grid part of new model by the bone of the positional information adjustment master pattern of human face characteristic point.
Step 6, covering application module and photo generate grid part and original positive character's picture of the positional information of pinup picture module by human face characteristic point, new model, generate new covering data and new personage's pinup picture data.
Step 7, the pinup picture Fusion Module is according to the new personage's pinup picture data and the pinup picture of master pattern, generate complete final three-dimensional facial model, software becomes to put up figure according to translucent formula with master pattern pinup picture data and newly-generated personage's pinup picture data fusion.Translucent formula is: R=R1*a+R0* (1-a), G=G1*a+G0* (1-a), B=B1*a+B0* (1-a), wherein, R, G, B are respectively the red, green, blue components of front face picture, a is translucent value, R1, R0, G1, G0, B1, B0 represent the red, green, blue component of original pinup picture model that needs do to mix and newly-generated personage's pinup picture model respectively.
Step 8, application module render model according to the three-dimensional facial model in render engine.
See also shown in the accompanying drawing 2, the positive character's picture in the step 1 is the picture of choosing arbitrarily on the computing machine, and form is JPEG, BMP, TGA, PNG or the like.The present invention is by classifying to the suffix name of input picture, select to use different FaceSDK storehouses, the FaceSDK storehouse comprises LibTGA, LibPNG and LibJPEG, use the FaceSDK storehouse to come comparison film to resolve, thereby obtain the two-dimensional coordinate of various unique points on picture of people's face, the input picture is converted to the form of the bitmap images of standard.
See also shown in the accompanying drawing 3, also comprise in the step 5:
Step 5.1 is a benchmark with the nose characteristic point position, calculates the relative position of a unique point to the nose unique point;
Step 5.2 is the benchmark bone with nose bone position, by the unique point relative position that calculates before, calculates the position of other bone, generates new model.
See also shown in the accompanying drawing 4, also comprise in the step 6:
Step 6.1, the covering application module is found out the different part in summit in two sets of data according to master pattern data and adjusted grid data, according to the difference on different summits, generates the covering data;
Step 6.2, photo generate the distribution of pinup picture module according to unique point, and the people face part that comprises human face characteristic point in positive character's picture is reduced, and generate new personage's pinup picture data.
Step 7, pinup picture Fusion Module generate complete final three-dimensional facial model according to the new personage's pinup picture data and the pinup picture of master pattern:
Step 7.1, the pinup picture Fusion Module becomes to put up figure with master pattern pinup picture data and newly-generated personage's pinup picture data fusion.
Step 8, application module render model according to the three-dimensional facial model in render engine.
See also shown in the accompanying drawing 5, the method that the present invention adjusts three-dimensional face model automatically according to a human face photo generates 56 face feature points after positive character's picture being converted to the bitmap image format of standard, unique point is distributed in eyebrow respectively, eyes, nose, face and face mask, adjust by the unique point adjusting module, generating new unique point distributes, and according to the new new skeletal system of unique point distribution generation, thereby generating mesh part and personage's pinup picture data, generate final model pinup picture, utilize translucent formula R=R1*a+R0* (1-a) again, G=G1*a+G0* (1-a), B=B1*a+B0* (1-a) puts up figure with two and is fused into one and puts up figure, renders three-dimensional model at last in render engine.
The present invention adjusts the method for three-dimensional face model automatically according to a human face photo, can be by catching the portrait photo's that the user provides facial characteristics point, automatically real-time generation meets the three-dimensional model head portrait of photo feature, and can make three-dimensional model in as photo, have the makings of model itself again the fusion of the pinup picture nature of real pictures and model itself.Simultaneously, because simulation facial muscle and ad hoc key feature point, make the three-dimensional head portrait of generation can carry out the FA Facial Animation of nature.The user can be applied in game making widely by importing the directly automatic real-time generation three-dimensional model of a full face, and CG makes, and in the every profession and trades such as three-dimensional MV making, particularly online game makes each personage in the recreation that different profiles all be arranged.
In sum, the method that the present invention adjusts three-dimensional face model automatically according to a human face photo is because by catching the facial characteristics point of positive character's picture that the user provides, and can real-time automatically generation meets the characteristic 3 D model head portrait of positive character's picture; The present invention adjusts the method for three-dimensional face model automatically according to a human face photo can be with the fusion of the pinup picture nature of real pictures and model itself; The present invention adjusts the FA Facial Animation that three-dimensional model head portrait that the method for three-dimensional face model generates can carry out nature automatically according to a human face photo; The method cost that the present invention adjusts three-dimensional face model automatically according to a human face photo is low, simple to operate, is easy to popularization and application, is particularly useful for game making, CG making and three-dimensional MV making etc.
Claims (8)
1. adjust the method for three-dimensional face model automatically according to a human face photo for one kind, be applied to generate in the system that pinup picture module, pinup picture Fusion Module and application module form by picture input parsing module, unique point automatically-generating module, unique point adjusting module, skeletal system adjusting module, covering application module, photo; It is characterized in that: this method may further comprise the steps at least:
Step 1, the user imports positive character's picture of various forms;
Step 2, picture input parsing module is by analyzing positive character's picture, the conversion photo form;
Step 3, the unique point automatically-generating module is resolved positive character's picture, generates the series of features point automatically;
Step 4, the unique point adjusting module is adjusted the human face characteristic point of automatic generation;
Step 5, skeletal system adjusting module generate the grid part of new model by the bone of the positional information adjustment master pattern of human face characteristic point;
Step 6, covering application module and photo generate grid part and original positive character's picture of the positional information of pinup picture module by human face characteristic point, new model, generate new covering data and new personage's pinup picture data;
Step 7, pinup picture Fusion Module generate complete final three-dimensional facial model according to the new personage's pinup picture data and the pinup picture of master pattern;
Step 8, application module render model according to the three-dimensional facial model in render engine.
2. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: the positive character's picture in the described step 1 is the picture of choosing arbitrarily on the computing machine.
3. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 2 also comprises:
Step 2.1, picture input parsing module selects to use different FaceSDK storehouses by the suffix name of input picture is classified, and the input picture is converted to the bitmap image format of standard.
4. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 3 also comprises:
Step 3.1, the unique point automatically-generating module is imported the FaceSDK storehouse with photo and is resolved, and obtains the coordinate of various unique points on picture of people's face, and one has 56 human face characteristic points.
5. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 4 also comprises:
Step 4.1, the characteristic point information that the unique point adjusting module will generate automatically shows on computer screen and adjusts.
6. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 5 also comprises:
Step 5.1 is a benchmark with the nose characteristic point position, calculates the relative position of a unique point to the nose unique point;
Step 5.2 is the benchmark bone with nose bone position, by the unique point relative position that calculates before, calculates the position of other bone, generates new model.
7. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 6 also comprises:
Step 6.1, the covering application module is found out the different part in summit in two sets of data according to master pattern data and adjusted grid data, according to the difference on different summits, generates the covering data;
Step 6.2, photo generate the distribution of pinup picture module according to unique point, and the people face part that comprises human face characteristic point in positive character's picture is reduced, and generate new personage's pinup picture data.
8. according to claim 1ly adjust the method for three-dimensional face model automatically according to a human face photo, it is characterized in that: described step 7 also comprises:
Step 7.1, the pinup picture Fusion Module becomes to put up figure with master pattern pinup picture data and newly-generated personage's pinup picture data fusion.
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| CN111783182B (en) * | 2020-07-07 | 2024-03-01 | 恒信东方文化股份有限公司 | Modeling method and system of three-dimensional virtual mannequin |
| CN112819932A (en) * | 2021-02-24 | 2021-05-18 | 上海莉莉丝网络科技有限公司 | Method and system for manufacturing three-dimensional digital content and computer readable storage medium |
| CN112819932B (en) * | 2021-02-24 | 2022-11-22 | 上海莉莉丝网络科技有限公司 | Method, system and storage medium for manufacturing three-dimensional digital content |
| CN113486394A (en) * | 2021-06-18 | 2021-10-08 | 武汉科技大学 | Privacy protection and tamper-proofing method and system based on face block chain |
| WO2024067320A1 (en) * | 2022-09-29 | 2024-04-04 | 北京字跳网络技术有限公司 | Virtual object rendering method and apparatus, and device and storage medium |
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