Amidst the continuous emergence of innovative technologies, the demand for presenting real-world objects in 3D is on the rise, particularly in the realms of マシンビジョン および3D視覚化、正確で適応的な3Dキャプチャ機能が不可欠になっています。
To execute 3D measurement, a probe is employed to measure the distance to each point on the object’s surface. In theory, this probe could take the form of a tactile (physical contact) probe. However, given that numerous applications necessitate non-contact measurements, optical technologies provide viable solutions by relying solely on light-based to detect objects of interest.
Structured light, employed as an optical method in 3D scanning, functions by projecting a series of meticulously designed light patterns onto the object under measurement in a specific sequence. During this process, a camera, positioned at a known distance from the projector, concurrently captures a sequence of images of the illuminated object.
The captured image undergoes distortion based on the surface shape being scanned in relation to the flat reference surface utilized for calibration. Leveraging the principles of geometric triangulation, the XYZ coordinates for each point on the scanned object’s surface can be computed. The resulting point cloud data is then utilized to construct a detailed 3D model of the scanned object’s surface.
The generation of 3Dモデル 構造化されたライトスキャンを介して、3Dスキャンプラットフォームの機能に統合されることが多い洗練された位相アンラッピングアルゴリズムが必要です。結果の品質は、結果として得られるモデルの精度に極めて重要です。光学解像度は、光の波長によって制約されるストライプ幅と光学品質に依存しています。位相- Shiftメソッドは、わずかにシフトしたフリンジの複数のショットをキャプチャすることにより、解像度を強化します。現在- Day光ストライプパターンプロフィロメトリーは、1ミクロンまたはストライプ幅の約1/10を超える光の波長までの詳細な解像度をサポートします。水平方向の精度の観点から、補間により、信頼できる高さの解像度と精度が1/50ピクセルまで減少します。
構造化されたライト3Dスキャンの利点と課題
Structured light 3D scanning stands out with numerous advantages, positioning itself as the preferred technology for users worldwide across various fields. Let’s delve into the key strengths of structured light scanning and its significant impacts in diverse applications:
非接触測定
Structured light scanning excels in capturing a wide array of objects comprehensively. In contrast to contact measurement methods like 測定機を調整します (CMM) or target photogrammetry, which are often impractical for unique artifacts, museum pieces, or high-value collections, structured light scanning facilitates non-contact measurements with sub-millimeter accuracy. This reduces the risk of damage, making it a valuable choice in sensitive scenarios.
高-スピードスキャン
Renowned for its exceptional speed, structured light 3D scanners outpace traditional photogrammetry, CMM machines, or manual measurement tools. Completing tasks in just one to two hours, these scanners significantly enhance work efficiency, especially in dynamic and time-sensitive environments.
優れた精度
Structured light ensures high-precision 3D scanning. Going beyond traditional measurement methods like calipers and rulers, it captures the entire object or scene from all angles, providing comprehensive data. This is particularly crucial for measuring complex objects, surpassing the limitations of merely capturing discrete points and linear extensions on the surface.
絶対的な安全
Structured light has a longstanding and safe track record in healthcare. Extensive testing and medical approval affirm its safety in various settings, including hospitals, schools, and businesses. Unlike certain laser scanners that pose potential risks of vision damage or employ radiation for scanning, structured light scanners offer a harmless and effective alternative.
Structured light 3D scanning plays a pivotal role in リバースエンジニアリング, transforming real-world objects into digital models. This is particularly crucial for Computer-Aided Design (CAD) data generation in manufacturing, significantly expediting the product design and development process.
文化的および歴史的アーティファクトの記録
Structured light scanning finds increasing significance in 文化的遺物保護 and the preservation of cultural heritage. Through high-precision scanning, intricate details of cultural artifacts can be accurately recorded, supporting restoration, research, and digital preservation efforts.
As structured light technology continues to evolve, its applications are poised to expand, unlocking more intriguing and innovative possibilities. In the future, structured light 3D scanning is anticipated to become a standard tool across various industries, offering practical digital solutions to an even broader spectrum of users.
構造化されたライト3Dスキャンとレーザー3Dスキャン
While structured light 3D scanning has proven its mettle across diverse applications, offering precision, speed, and safety, another technological marvel in the domain of 3D digitization is laser scanning. Laser 3D scanning, or laser triangulation, presents a distinct approach, harnessing the power of laser technology to capture the physical world in unparalleled detail.
Unlike structured light scanning, which relies on the projection of patterned light, laser scanning focuses on the interaction of a single laser point with the object’s surface. This method offers its unique set of advantages and challenges, tailored for specific applications where precision, resolution, or speed are paramount.
材料互換性の汎用性: Laser scanners exhibit less sensitivity to different surface types and colors compared to structured light scanners. They can efficiently scan metallic, dark, or shiny surfaces, which might pose challenges for structured light scanners.
長い-範囲スキャン機能: Certain laser scanners, like トラックスカン-シャープ3Dシステム, are designed for long-range scanning, capable of accurately capturing large structures or environments from a distance. This is particularly beneficial in construction, architecture, and large-scale industrial applications.