Three-dimensional reconstruction method of on-board cables based on two-dimensional drawings

doi:10.11996/JG.j.2095-302X.2025030666

Abstract

Abstract:

Cables are widely employed on airplanes and other aircrafts, connecting various equipments and power systems on board. At present, large-scale installation of aircraft cables was predominantly executed manually based on two-dimensional drawings, resulting in low efficiency and poor accuracy. The extraction of cable data information from complex 2D drawings and its conversion into clear and intuitive 3D models to optimize the cable routing process has become a key issue requiring urgent resolution. The two-dimensional drawings contain extensive cable graphic structures and annotation information, which are densely arranged, have non-intuitive presentation forms, and interfere with each other, posing a huge challenge to the three-dimensional reconstruction of cables. In order to address this practical engineering challenge, a three-dimensional reconstruction method for on-board cables based on two-dimensional drawings was proposed. The method accurately and efficiently extracted, integrated, and reconstructed structural information from two-dimensional drawings to accurately reflect the three-dimensional spatial position relationship of cables. Through the automatic reading of two-dimensional cable installation drawings, a cable connection algorithm employing a bidirectional optimal matching strategy and a cable reconstruction method based on two-dimensional cable installation drawings were proposed. Finally, the three-dimensional cable topology and geometric structure were reconstructed, and tested and validated using practial engineering data.

Key words: 3D cable reconstruction, drawing recognition, computer-aided design and manufacturing

CLC Number:

TP391
V242

LI Mo, CAI Chenshu, CHEN Junzhao, WANG Ping, ZHAO Bo, ZENG Long, LI Ming, FANG Qiang. Three-dimensional reconstruction method of on-board cables based on two-dimensional drawings[J]. Journal of Graphics, 2025, 46(3): 666-675.

Figures/Tables 20

Fig. 1 2D cabling diagram

Fig. 2 Flowchart for extracting and completing cable diagram information

Fig. 3 Schematic diagram of the comparison before and after the operation of the extended truncation algorithm ((a) Extended truncation algorithm before running; (b) After running the extended truncation algorithm)

Fig. 4 Diagram of the identification of the label frames

Fig. 5 Diagram of the label frames marked in the drawing

Fig. 6 Diagram of short and long lines ((a) Long lines; (b) Short lines)

Fig. 7 Schematic diagram of short line completion judgment

Fig. 8 Schematic diagram of interception and U-turn situations

Fig. 9 Schematic diagram of interception and U-turn situation judgment ((a) Intercepted lines; (b) U-turn)

Fig. 10 Schematic diagram of a long line of complementary judgment

Fig. 11 Schematic diagram of cable completion results based on two-way matching strategy

Fig. 12 Schematic diagram of cases of corner and cross sections ((a) Corner; (b) Cross sections)

Fig. 13 Schematic diagram of cable completion results

Fig. 14 Schematic diagram of 2D graphic mapping to 3D airframe model

Fig. 15 Schematic diagram of correcting the clamp matching relationship in Blender

Fig. 16 Schematic diagram of clamp model

Fig. 17 Schematic visualization of the clamp connection relationship at the cable bifurcation ((a) Matching diagram of the clamp to the reconstructed cable; (b) Clamp connection relationship diagram)

Fig. 18 Schematic of the clamp diagram model in Blender

Fig. 19 Schematic diagram of the results of the corrected clamp diagram

Fig. 20 Schematic of reconstructed cable in CATIA((a) Front view; (b) Side view)

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