CN104504749A - Bronze ware inscription information extraction and recording method based on three-dimensional reconstruction technology - Google Patents
Bronze ware inscription information extraction and recording method based on three-dimensional reconstruction technology Download PDFInfo
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- CN104504749A CN104504749A CN201410759302.7A CN201410759302A CN104504749A CN 104504749 A CN104504749 A CN 104504749A CN 201410759302 A CN201410759302 A CN 201410759302A CN 104504749 A CN104504749 A CN 104504749A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/42—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation
- G06V10/422—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation for representing the structure of the pattern or shape of an object therefor
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Abstract
The invention discloses a bronze ware inscription information extraction and recording method based on a three-dimensional reconstruction technology. Bronze ware inscriptions are subjected to three-dimensional reconstruction by the three-dimensional reconstruction technology so as to obtain a high-precision three-dimensional bronze ware inscription model; the bronze ware inscriptions are cast inscriptions or engraved inscriptions; the high-precision three-dimensional bronze ware inscription model records grooves or bulges of such characters under high precision; after the three-dimensional model is subjected to curvature analysis, smoother positions without the inscriptions on the model are low in curvature, and positions with inscriptions are high in curvature, so that the character part generates curvature change; by capturing and drawing of characteristic lines at the high-curvature positions, form information of the bronze ware inscriptions is extracted and recorded under high precision; most of the bronze ware inscriptions are not positioned on the same plane; the characteristic lines extracted and recorded based on curvature analysis of the three-dimensional model are form characteristics in a three-dimensional space; by positive projections of characters one by one, a positive projection image of the bronze ware inscriptions is acquired. According to the bronze ware inscription information extraction and recording method, the precision of the inscription information and the efficiency of an extraction process can be guaranteed.
Description
Technical field
The present invention relates to a kind of method extracting ancient bronze object information, specifically, relate to a kind of ancient bronze object information extraction based on Three Dimensional Reconfiguration and recording method.
Background technology
At present, known ancient bronze object recording mode primary limitation is imitating record and inscription rubbing two kinds of modes.
Imitating record is that descendant " copies sth. from a notebook to another one by the method for drawing according to sample " according to the word form of ancient bronze object, it is the description to ancient bronze object stroke, record result is only the roughly stroke feature of ancient bronze object word, be a kind of subjective judgement and record, cause the extreme loss of ancient bronze object information undoubtedly;
On the other hand, inscription rubbing is a kind of ancient traditional Chinese art form, until today, is also applied to the information record of ancient bronze object.But, because rubbing makes the method for making that places one's entire reliance upon, during thickness, the facsimile reproduction of paper, the moistening degree of paper, inscription rubbing tool kind and technique, the size of inscription rubbing dynamics, the mode of inscription rubbing and gimmick are all the key factors affecting inscription rubbing quality, and rubbing quality can be caused uneven; In addition, in order to avoid rubbing word mouth is thicker, font becomes loose, need keep the original ups and downs change of rubbing as far as possible, does not advocate that carrying out holder to it mounts, thus makes rubbing very harsh to the requirement of Conservation environment; Finally, bronze ware is seen then solid, actually fragile, makes rubbing and can contact bronze surface, and " beating " repeatedly folded black action can cause very large injury to bronze ware.Therefore, for the object to historical relic's protection, be necessary to be limited in behavior historical relic carrying out facsimile reproduction, People's Republic of China's Law For the Preservation of Antiques is expressly provided " copy, take, inscription rubbing cultural relics in the collection of cultural institution, must not cause damage to cultural relics in the collection of cultural institution ".
But without rubbing, the research that archaeology depends on rubbing with the correlative study of historical relic is just hindered.The research such as moulding, composition to world of art of the visual information such as black and white form, figure-ground relation, shape profile of the uniqueness distinctness that rubbing image presents has special value and significance, and these features to be common photo do not possess with irreplaceable.
Summary of the invention
The object of the invention is to the defect overcoming the existence of above-mentioned technology, a kind of ancient bronze object information extraction based on Three Dimensional Reconfiguration and recording method are provided, inscription information can not only be carried out digitized extraction and record by the method, and can ensure the accuracy of inscription information and the efficiency of leaching process.
Its concrete technical scheme is:
Based on ancient bronze object information extraction and the recording method of Three Dimensional Reconfiguration, utilize Three Dimensional Reconfiguration to carry out three-dimensionalreconstruction to ancient bronze object, obtain high-precision ancient bronze object three-dimensional model.Ancient bronze object is casting inscription or carves inscription, namely has obviously at bronze surface, more regular word groove or projection.Ancient bronze object three-dimensional model is high-precision have recorded this word groove or projection, and its three-dimensional model, after curvature analysis, model is low curvature without the more smooth place of inscription, has inscription position to be higher curvature place.Namely at word position, there occurs larger Curvature varying.Caught by the characteristic curve at higher curvature place and draw, getting final product the shape information of high-precision extraction and record ancient bronze object.In addition, ancient bronze object is many not at grade, extracts and the characteristic curve of record is also morphological feature in three dimensions based on three-dimensional model curvature analysis, after the orthogonal projection of word one by one, can obtain the orthophotoquad of ancient bronze object.
Compared with prior art, beneficial effect of the present invention is:
Inscription information can not only be carried out digitized extraction and record by the present invention, and can ensure the accuracy of inscription information and the efficiency of leaching process.
Accompanying drawing explanation
Fig. 1 is ancient bronze object photo;
Fig. 2 is ancient bronze object three-dimensionalreconstruction model;
Fig. 3 is ancient bronze object three-dimensional model curvature analysis;
Fig. 4 is that ancient bronze object characteristic line catches;
Fig. 5 is the orthogonal projection of ancient bronze object characteristic line;
Fig. 6 is ancient bronze object characteristic line orthophotoquad;
Fig. 7 is that ancient bronze object characteristic line imitates rubbing effect.
Embodiment
Below in conjunction with concrete drawings and Examples, technical scheme of the present invention is described in more detail.
1, ancient bronze object information three-dimensional reconstruct: according to casting feature and the preservation condition of ancient bronze object, inscription lines are thin, scale of construction smaller, and high precision white light, laser 3 d scanner can be utilized to carry out three-dimensionalreconstruction; Inscription lines are comparatively thick, scale of construction the greater, and the three-dimensional reconstruction method based on sequence image can be utilized to carry out three-dimensionalreconstruction to ancient bronze object.As shown in Figure 1, ancient bronze object three-dimensionalreconstruction model as shown in Figure 2 for ancient bronze object original photo.
2, ancient bronze object feature curvature analysis: based on ancient bronze object three-dimensional model, carries out model surface curvature analysis, utilizes curvature analysis to identify ancient bronze object position.Curvature analysis result can be used for the rank determining its continual curvature, shows the uncontinuity of ancient bronze object model curvature simultaneously, and creates out ancient bronze object curvature analysis figure.Ancient bronze object model curvature analysis result as shown in Figure 3.
When analyzing inscription curvature, ancient bronze object model curvature figure can be controlled from the following aspects:
(1) quantity-control create the quantity of curvature figure.Can in the quantity of different individually-edited the created figures in amount of curvature place.
(2) quality-image density of control figure at higher curvature place.
(3) second quality-control figure is at the image density of low curvature.
(4) ratio-picture depth of control figure at higher curvature place.
(5) second ratios-control figure is in the picture depth of low curvature.
(6) color-image color of control figure at higher curvature place.
(7) second colors-control figure is at the image color of low curvature.
(8) display of graphic style-curvature chart picture and connected mode.
3, ancient bronze object feature information extraction and record: based on ancient bronze object curvature analysis, inscription edge is higher curvature, be low curvature without inscription feature place, inscription border is judged by curvature analysis result, matching inscription border lines, to reach the object extracting inscription information, the inscription characteristic line of acquisition as shown in Figure 4.
When extracting with record inscription information, ancient bronze object bargraphs can be controlled from the following aspects:
(1) curvature threshold of fit threshold-control matching inscription characteristic line.
(2) continuity of line pitch-control inscription characteristic line.
(3) smoothness of lines curvature-control inscription characteristic line.
4, ancient bronze object characteristic curve orthogonal projection: the inscription characteristic curve obtained in Fig. 4, for facing effect, not in unified plane, inscription distortion in center is less, and the distortion of surrounding inscription is larger.Obtain inscription orthography, need carry out the orthogonal projection of inscription characteristic curve, detailed process is as follows:
(1) split inscription free form surface: with independent inscription in-scope for benchmark, segmentation ancient bronze object three-dimensional model is independently inscription free form surface.
(2) independent inscription orthogonal projection plane is established: by independent inscription place free form surface, its orthogonal projection plane of matching.
(3) inscription feature orthogonal projection: with orthogonal projection plane for benchmark, carries out the orthogonal projection of inscription characteristic curve.Orthogonal projection position is that position faced in inscription.As shown in Figure 5, orthogonal projection result as shown in Figure 6 for orthogonal projection process.Ancient bronze object characteristic line imitates rubbing effect as shown in Figure 7.
The above, be only the present invention's preferably embodiment, protection scope of the present invention is not limited thereto, and the later stage can produce various required inscription numeral rubbing effect according to inscription orthography.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen within the scope of protection of the present invention.
Claims (1)
1. based on ancient bronze object information extraction and the recording method of Three Dimensional Reconfiguration, it is characterized in that, utilize Three Dimensional Reconfiguration to carry out three-dimensionalreconstruction to ancient bronze object, obtain high-precision ancient bronze object three-dimensional model; Ancient bronze object is for casting inscription or carve inscription, obvious, regular word groove or projection is had at bronze surface, ancient bronze object three-dimensional model is high-precision have recorded this word groove or projection, its three-dimensional model is after curvature analysis, model is low curvature without the more smooth place of inscription, there is inscription position to be higher curvature place, at word position, there occurs Curvature varying; Caught by the characteristic curve at higher curvature place and draw, the shape information of the high-precision extraction of energy and record ancient bronze object; Ancient bronze object is many not at grade, extracts and the characteristic curve of record is also morphological feature in three dimensions based on three-dimensional model curvature analysis, after the orthogonal projection of word one by one, obtains the orthophotoquad of ancient bronze object.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961408A (en) * | 2018-06-12 | 2018-12-07 | 山东大学 | Digital rubbing production method, system and storage medium based on triangle grid model |
| CN111382749A (en) * | 2020-03-02 | 2020-07-07 | 西安建筑科技大学 | Bronze ware inscription image automatic identification method based on two-dimensional structural features |
| CN112183585A (en) * | 2020-09-08 | 2021-01-05 | 西安建筑科技大学 | Bronze ware inscription similarity measurement method based on multi-feature measurement |
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| WO2012071688A1 (en) * | 2010-12-03 | 2012-06-07 | 中国科学院自动化研究所 | Method for analyzing 3d model shape based on perceptual information |
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| WO2012071688A1 (en) * | 2010-12-03 | 2012-06-07 | 中国科学院自动化研究所 | Method for analyzing 3d model shape based on perceptual information |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961408A (en) * | 2018-06-12 | 2018-12-07 | 山东大学 | Digital rubbing production method, system and storage medium based on triangle grid model |
| CN108961408B (en) * | 2018-06-12 | 2020-07-31 | 山东大学 | Digital rubbing manufacturing method, system and storage medium based on triangular mesh model |
| CN111382749A (en) * | 2020-03-02 | 2020-07-07 | 西安建筑科技大学 | Bronze ware inscription image automatic identification method based on two-dimensional structural features |
| CN112183585A (en) * | 2020-09-08 | 2021-01-05 | 西安建筑科技大学 | Bronze ware inscription similarity measurement method based on multi-feature measurement |
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