WO2010015193A1 - 一种织物尺寸变化和扭曲度的数字化测量***和方法 - Google Patents

一种织物尺寸变化和扭曲度的数字化测量***和方法 Download PDF

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Publication number
WO2010015193A1
WO2010015193A1 PCT/CN2009/073084 CN2009073084W WO2010015193A1 WO 2010015193 A1 WO2010015193 A1 WO 2010015193A1 CN 2009073084 W CN2009073084 W CN 2009073084W WO 2010015193 A1 WO2010015193 A1 WO 2010015193A1
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Prior art keywords
sample
tested
illumination
fabric
mark
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PCT/CN2009/073084
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English (en)
French (fr)
Inventor
辛斌杰
白求智
胡金莲
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香港纺织及成衣研发中心
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Publication of WO2010015193A1 publication Critical patent/WO2010015193A1/zh

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/16Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06HMARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00Inspecting textile materials
    • D06H3/08Inspecting textile materials by photo-electric or television means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/16Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/167Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36Textiles
    • G01N33/367Fabric or woven textiles

Definitions

  • the present invention relates to a fabric related digital measurement system and method, and more particularly to a digital measurement system and method for fabric dimensional change and distortion. Background technique
  • Dimensional variations and distortions are a prominent problem with fabric materials, especially knit fabrics. These two characteristics affect the dimensional stability of the fabric material and are considered by the textile industry to be one of the most important quality indicators. Dimensional stability refers to the ability of a fabric to resist dimensional changes. The fabric or garment exhibits shrinkage or elongation at different sizes under various conditions such as washing, drying, steaming or pressing. Anti-shrinkage agents are often added to the fabric to reduce dimensional changes. Release shrinkage, progressive shrinkage, and heat shrinkage are the three shrinkage reactions exhibited by fabric materials in a hot, humid environment.
  • the release shrinkage is due to the shrinkage caused by the release of the stress imposed on the fabric fibers when the fabric is woven; the progressive shrinkage refers to the gradual accumulation of the size due to the continuous washing and the like; the heat shrinkage is specified.
  • Fabrics containing heat-shrinkable fibrous materials when subjected to heat, move the polymeric material in the fibers to reduce their size in a random, non-linear form, thereby reducing the change in fabric shape.
  • the AATCC 135 test method details the procedure for determining fabric dimensional stability; this method provides a standard test method for measuring fabric size changes during household washing.
  • the AATCC 96 test method specifically uses a washing wheel that simulates commercial washing equipment to measure dimensional changes in textile or knit fabrics in commercial washing.
  • the AATCC 160 test method describes the process by which the fabric is dimensionally restored after standard washing to simulate the tensile and compressive stresses experienced by the fabric prior to or during use.
  • the technical problem to be solved by the present invention is that the above-mentioned manual measurement for the prior art has the defects of long time, large error, low precision and technical vacancies of the new automatic measurement system, and provides a dimensional change and distortion of the textile material. Digital measurement systems and methods.
  • the technical solution adopted by the present invention to solve the technical problems thereof is: on the one hand, providing a fabric material for measuring the change of the mark on the fabric before measuring the fabric material in a typical commercial washing, drying and size recovery process, etc.
  • the method of dimensional change and distortion includes the following steps:
  • S 1 uses a marking template to print a fiducial mark on the surface of the sample to be tested, and uses a digital imaging device to take a photo of the sample to be tested with the fiducial mark;
  • S2 puts the sample to be tested into the relevant equipment for physical or chemical treatment, so that the sample to be tested is subjected to washing, drying and recovery processes;
  • S4 determines the coordinates of the reference mark according to the image of the sample to be tested before and after the processing, and calculates the dimensional change and the degree of distortion of the sample to be tested according to the coordinates of the reference mark.
  • the present invention also provides a digital measurement system for fabric size and distortion for measuring dimensional changes and distortions of a fabric material during physical or chemical processing, including markings for marking a sample to be tested.
  • a template for forming an illumination ⁇ surrounding the space
  • an imaging device for taking an image of the sample to be tested
  • a fixture for mounting the imaging device in the illumination chamber, for illuminating the sample to be tested
  • a surface illumination device for placing and fixing a sample to be tested in an illumination cassette, a software package for image processing, and a computer connected to the imaging device to run the software.
  • the image forming apparatus is a digital photographing apparatus.
  • the mark template is used to mark four or more fiducial marks on the surface of the sample to be tested before photographing
  • the mark template The cover plate includes a cover plate, and a shaft connecting the cover plate and the bottom plate, the mark stencil clamps and fixes the sample to be tested on the bottom plate, and the mark stencil is provided with an opening for being passed therethrough
  • the reference mark is drawn on the surface of the test sample.
  • the image forming apparatus is mounted on a three-dimensional slide rail that enables the image forming apparatus to move in three directions, thereby approving the sample to be tested.
  • the position between the imaging device and the imaging device; the orientation of the imaging device is adjustable.
  • the illumination device provides an enclosing space for placing and fixing the sample to be tested, and the illumination device further includes a sample for placing the sample to be tested.
  • the sample stage can be moved.
  • the illumination device is mounted in an illumination chamber, the illumination device comprising a plurality of illumination sources capable of providing controlled precise illumination within the enclosure space
  • Each illumination source is symmetrically mounted above the loading stage to ensure uniform illumination within the illumination pupil; the illumination source is selected from a source that provides standard illumination.
  • the present invention also provides an image processing software algorithm and program for digital measurement of fabric size change and warp, including acquiring an image, segmenting an image, identifying a mark, determining mark coordinates, and calculating a size of the sample to be tested before and after processing. Change and degree of change.
  • the dimensional change and the warp degree are represented by parameters Dh, Dv and S, and the fabric size In the horizontal direction, the fabric
  • the change in size in the vertical direction is Dv ⁇ d ' A ⁇ + 2 ' ⁇ , the warp of the fabric
  • the digital measuring system and system for implementing the fabric size change and the turning degree of the present invention have the following beneficial effects: the present invention combines digital imaging technology and computer image processing technology, thereby avoiding manual manpower Fatigue and human error improve the accuracy of the measurement and provide researchers with more accurate and scientific data results to facilitate the development of fabric materials in development and application.
  • FIG. 1 is a schematic structural view of a digitizing system for measuring fabric size change and warpage based on two-dimensional image analysis technology of the present invention
  • FIG. 2 is a schematic view of a lighting device for ensuring uniform brightness in a lighting chamber in the present invention
  • FIG. 3 is a view showing a step of measuring a dimensional change and a turning degree of a fabric material in the present invention
  • FIG. 4 is a flow chart of the image processing software for measuring the dimensional change and the degree of warpage of the fabric material in the present invention
  • FIG. 5 is a schematic view showing the dimensional change and the degree of warpage of the fabric material before and after the treatment in the present invention.
  • Figure 1 shows a schematic view of a preferred apparatus configuration of the present invention.
  • the imaging device 2 is mounted on the top of the illumination cassette 5 by means of a fixture to facilitate the capture of a digital image of the sample 6 to be tested placed on the sample stage 4, which is housed in the illumination cassette 5.
  • the imaging device 2 is connected to a computer 1 equipped with image processing software.
  • the label template 7 is used to mark 4 or more fiducial marks on the surface of the sample to be tested.
  • the marking template 7 is divided into a cover 7a and a bottom plate 7b, which are connected by a shaft 9, and the sample to be tested 6 can be clamped and fixed to the bottom plate 7b.
  • the reference mark is placed on the surface of the sample to be tested through the opening 8.
  • the preferred shape of the fiducial mark is a cross type, and other shapes may be used.
  • the preferred number of fiducial markers is 4, located at the four corners of the square.
  • the imaging device 2 may be a digital camera or other digital image device such as a video camera or the like, and the computer 1 is connected to the imaging device 2, receives data of the captured digitized image of the sample 6 to be measured, and performs calculation and analysis. This will be described in detail later.
  • the image forming apparatus 2 is provided with a three-dimensional slide 2a so as to be movable in three vertical directions for positional adjustment, thereby aligning the position between the image forming apparatus 2 and the sample 6 to be tested.
  • the orientation of the imaging device 2 can also be adjusted.
  • FIG. 2 shows the lighting device located within the illuminator.
  • the illuminating device 3 comprises a plurality of illuminating light sources, each of which is symmetrically mounted above the loading stage 4 to provide precise illumination of the illuminating ⁇ 5 to ensure uniform illumination throughout the illuminating ⁇ 5 .
  • the lighting device 3 used can be standard lighting, such as D65 during daytime simulation.
  • the illumination ⁇ 5 provides an enclosed space for placing and fixing the sample to be tested 6, and the device includes a movable sample stage 4 . Also, the loading stage 4 is preferably automatically controllable.
  • Figure 3 is a diagram showing the steps of measuring the dimensional change and twist of the fabric material in the present invention.
  • the first step the surface of the sample to be tested 6 is marked with a reference mark using the marking template 7, and then an image of the sample to be tested 6a with the reference mark before the processing is taken by a digital system.
  • the sample to be tested 6a with the fiducial mark is placed in a washing machine or other related equipment for physical or chemical treatment 10, where the sample 6a with the fiducial mark is washed, dried and recovered.
  • an image of the sample 6b to be tested with the fiducial mark after the processing is taken.
  • the coordinates of the fiducial mark in the image of 6a and 6b are determined, and the amount of change after the process 10 and after 10 is used. The dimensional change and the degree of warpage of the fabric material are calculated.
  • the method further includes calculating a change in initial coordinates and a final coordinate of each fiducial mark on the surface of the sample to be tested, wherein the initial means before processing and finally after the processing.
  • the algorithm and program of the image processing software include the following steps: acquiring an image, 11, dividing the image 12, identifying a reference mark 13, determining a reference mark coordinate 14, and calculating a dimensional change and a turning degree.
  • the computer 1 obtains a digitized image of the sample 6 to be tested with the reference mark 6a and the processed reference mark 6b before being processed by communicating with the imaging device 2;
  • Identifying the fiducial mark 13 Find the intersection of the two intersecting lines of the fiducial mark using the Hough transform, which can also be found with the mouse;
  • Calculation Process 15 Calculate the movement of the fiducial mark before and after the process, and the parameters used to characterize the dimensional change and the degree of warp are Dh, DA ⁇ P S .
  • FIG. 5(a) is a schematic view of the reference mark 6a before the process
  • FIG. 5(a) is a schematic view of the reference mark 6a before the process
  • FIG. 5(b) is a schematic view of the reference mark 6b after the process, wherein each of the points A1 to A4 is the position of the front reference mark 6a after the process 10, B1 to B4 are positions of the reference mark 6b after the treatment 10, and points A1 to A4, Bl to B4 are respectively connected in a straight line to form straight lines A1A2, A2A3, A3A4 and A1A4, and B1B2, B2B3, B3B4 and ⁇ 1 ⁇ 4.
  • ⁇ 1 is the angle between the adjacent straight lines A1A3 and ⁇ 3 ⁇
  • ⁇ 2 is the angle formed by the adjacent straight lines A1A2 and ⁇ 2 ⁇ 4, and ⁇ 1 and ⁇ 2 are the corresponding angles after processing.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

一种织物尺寸变化和扭曲度的数字化测量***和方法 技术领域
本发明涉及一种织物相关的数字化测量***和方法,更具体地说,涉及一 种织物尺寸变化和扭曲度的数字化测量***和方法。 背景技术
尺寸变化和扭曲度是织物材料的突出问题, 尤其是针织织物。这两个特征 影响到织物材料的尺寸稳定性,被纺织界认作是最重要的质量指标之一。尺寸 稳定性是指织物抵抗尺寸变化的能力, 织物或服装在洗涤、烘干、气蒸或按压 等不同条件下表现出不同尺寸上的收缩或伸长。通常给织物添加抗收缩剂来减 小尺寸变化。释放式收缩、渐进式收缩和热收缩是织物材料在热湿的环境下表 现出来的三种收缩反应。释放式收缩是由于在编织织物时强加在织物纤维上的 应力被释放所引起的收缩;渐进式收缩是指由于持续洗涤等动作弓 I起的逐渐积 累起来的尺寸减小; 热收缩是特指那些含有热缩性纤维材料的织物, 当受到热 作用时, 纤维中的高分子材料移动, 以随机、 非线性形式缩减它们的尺寸, 从 而弓 I起织物形状的变化缩小。
国际上现有很多种测量织物尺寸变化和扭曲度的标准,大多数都是采用手 工操作尺和笔来做标记。 AATCC 135测试方法详述了决定织物尺寸稳定性的 程序;这种方法提供了测量家庭洗涤时织物尺寸变化的标准测试方法。 AATCC 96测试方法特定使用了模拟商用洗涤设备的洗涤轮, 来测量商用洗涤中纺织 或针织织物的尺寸变化。 AATCC 160测试方法描述了织物在经过标准洗涤后 使其尺寸恢复的过程,以模拟织物在使用之前或使用当时所受的拉应力和压应 力。
用这些标准来测量织物尺寸变化和扭曲度的方法存在很多缺陷,如人为错 误, 人力疲劳, 不准确, 以及因工具和手工操作造成的测量时间长等。 随着数 字化技术的发展,需要开发一种数字化测量***来代替手工操作以达到精确和 高效的目的。
人们在如何采用图像分析技术,建立一套有效分析织物纤维表面的客观评 估***这方面做了很多研究。这些研究都有一个共同点, 就是要达到测量的自 动化、 智能化和数字化。不过, 这些研究尚未建立起一套数字化***来测定织 物材料的尺寸变化和扭曲度。
因此, 需要开发一种数字化方法和设备来快速, 精确并且一致性的测定织 物材料尺寸变化和扭曲度, 这种方法和设备不经能够测量普通的固态纤维, 同 时还能够对不同样式, 复杂颜色, 甚至是黑色纤维进行测量。本发明就提供了 这样一种新型的测量尺寸变化和扭曲度的方法和设备。 发明内容
本发明要解决的技术问题在于, 针对现有技术的上述人工测量存在耗时 长, 误差大, 精确性不高的缺陷以及新型自动化测量***的技术空缺, 提供一 种织物材料的尺寸变化和扭曲度的数字化测量***和方法。
本发明解决其技术问题所采用的技术方案是:一方面,提供一种通过测量 织物材料在典型商业洗涤,烘干和尺寸恢复等过程之前打到织物上的标记的变 化情况, 来测量织物材料的尺寸变化和扭曲度的方法, 包括以下几个步骤:
S 1 用标记模板在被测样品表面印上基准标记, 采用数字成像装置对带有 基准标记的被测样品进行拍照;
S2 将被测样品放入相关设备中进行物理或者化学处理, 使被测样品经过 洗涤、 烘干和恢复过程;
S3对处理后的带有基准标记的被测样品进行拍照;
S4 根据处理前和处理后的被测样品图像确定基准标记的坐标, 并根据基 准标记的坐标计算被测样品的尺寸变化和扭曲度。
另一方面, 本发明还提供一种织物尺寸和扭曲度的数字化测量***,用来 测量织物材料在物理或化学处理过程中的尺寸变化和扭曲度,包括用于给被测 样品做标记的标记模板,用于形成包围空间的照明匣, 用于拍摄被测样品图像 的成像装置,用于在照明匣内安装成像装置的固定装置,用于在照亮被测样品 表面的照明装置,用于在照明匣内安放和固定被测样品的载样台, 一套进行图 像处理的软件包以及与成像装置连接运行所述软件的计算机。
在本发明所述的织物尺寸变化和转曲度的数字化测量***中,所述成像装 置是数字化拍照装置。
在本发明所述的织物尺寸变化和转曲度的数字化测量***中,所述标记模 板用于在拍摄前在所述被测样品表面标上四个或四个以上基准标记,所述标记 模板包括盖板,底板以及连接盖板和底板的轴,所述标记模版将所述被测样品 夹持和固定在所述底板上,所述标记模版上设有开孔,用于通过其在被测样品 表面画上基准标记。
在本发明所述的织物尺寸变化和转曲度的数字化测量***中,所述成像装 置安装在三维滑轨上,所述三维滑轨使成像装置能沿三个方向移动,从而核准 被测样品和成像装置之间的位置; 所述成像装置的方位是可调整的。
在本发明所述的织物尺寸变化和转曲度的数字化测量***中,所述照明匣 为安放和固定被测样品提供了一个包围空间,所述照明匣还包括用于放置被测 样品的载样台, 所述载样台可移动。
在本发明所述的织物尺寸变化和转曲度的数字化测量***中,所述照明装 置安装在照明匣内,所述照明装置包括多个照明光源能在所述包围空间内提供 控制精确的光照;每个照明光源对称安装在载样台上方从而保证照明匣内的光 照均匀; 所述照明光源选用能提供标准照明的光源。
本发明还提供了一套用于织物尺寸变化和转曲度的数字化测量的图像处 理软件算法和程序, 包括获取图像, 分割图像, 识别标记, 确定标记坐标, 以 及计算被测样品在处理前后的尺寸变化和转曲度。
在本发明所述的用于织物尺寸变化和转曲度的数字化测量的图像处理软 件算法和程序中, 所述尺寸变化和转曲度是用参数 Dh, Dv和 S来表示的, 且 织物尺寸在水平方向的变化为 , 织物
Figure imgf000005_0001
尺寸在垂直方向的变化为 Dv^ d ' A ^ + 2' ^ , 织物的转曲度
1 1 χ ΐοο%
3
替换页(细则第 26条) al + 2 β\ + β2
为 S=~^ ^ , 其中 A1-A4四点是处理前四个基准标记的位置,
a\ + 2
2
B1-B4是处理后四个基准标记的位置, α 1是相邻直线 A1A3和 Α3Α4所组成 的夹角, α 2是相邻直线 A1A2和 Α2Α4所组成的夹角, (3 1和 (3 2是处理后 相应的角度。 实施本发明的织物尺寸变化和转曲度的数字化测量***和***,具有以下 有益效果:本发明采用数字化成像技术和计算机图像处理技术相结合,避免了 手工操作的人力疲劳和人为错误,提高了测量的准确性, 能够为研究人员提供 更具精确性和科学性的数据结果, 从而促进织物材料在研发和应用的发展。 附图说明
下面将结合附图及实施例对本发明作进一步说明, 附图中:
图 1 是本发明基于二维图像分析技术来测量织物尺寸变化和转曲度的数 字化***的结构示意图;
图 2是本发明中用于保证照明匣内亮度均匀的照明装置的示意图; 图 3是本发明中测量织物材料尺寸变化和转曲度的步骤图解;
图 4是本发明中图像处理软件测量织物材料尺寸变化和转曲度的流程图; 图 5是本发明中织物材料处理前和处理后尺寸变化和转曲度示意图。 具体实施方式
下面将对本发明结合附图进行详细说明。在下文描述中提到很多细节以便 全面了解本发明。但是本领域的专业人员可以很清楚地知道本发明在实际应用 中没有用到部分或全部细节。在其他范例中, 一些熟知的技术特征或者处理步 骤没有在下文中详述,但并不影响本发明的应用。本发明的特征和优点通过参 照下文中的附图和描述能够理解更透彻些。
替换页(细则第 26条) 图 1示出的是本发明的优选设备结构的示意图。成像装置 2通过固定装置 安装在照明匣 5的顶部,以便于拍摄安放在载样台 4上的被测样品 6的数字图 像,所述载样台 4封装在照明匣 5内。成像装置 2与装有图像处理软件的计算 机 1相连。
在处理被测样品 6之前,用标记模板 7在被测样品表面标上 4个或更多的 基准标记。 标记模板 7分为盖板 7a和底板 7b, 二者通过轴 9连接, 被测样品 6能够被夹持并固定在底板 7b上。 通过开孔 8在被测样品的表面做上基准标 记。基准标记的优选形状为十字交叉型, 也可以使用别的形状。基准标记的优 选数量为 4, 位于正方形的四个角。
成像装置 2可以是数码相机或者其他数字图像设备如摄像机等, 计算机 1 与成像装置 2相连,接收所拍摄到的被测样品 6的数字化图像的数据, 并进行 运算和分析。 后面将对其进行详细的描述。
成像装置 2上装有三维滑轨 2a, 使其能在三个垂直方向上移动进行位置 调整, 从而校准成像装置 2和被测样品 6之间的位置。成像装置 2的方位同样 也可以进行调整。
图 2示出的是位于照明匣内的照明装置。 照明装置 3包括多个照明光源, 每个照明光源对称安装在载样台 4上方, 为照明匣 5提供控制精确的照明,保 证照明匣 5内各处光亮的均一。所用照明装置 3可为标准照明, 如模拟白天的 D65 o
照明匣 5提供了一个包围空间用于放置和固定被测样品 6, 该装置包括可 移动的载样台 4。 并且, 载样台 4优选可自动控制。
图 3示出的是本发明中测量织物材料尺寸变化和扭曲度的步骤图解。在第 一步中, 使用标记模版 7在被测样品 6的表面标上基准标记,然后采用数字系 统拍摄处理前的带有基准标记的被测样品 6a的图像。 在第二步中, 将带有基 准标记的被测样品 6a放进洗衣机或其它相关设备进行物理或者化学处理 10, 在此, 带有基准标记的被测样品 6a被洗涤、 烘干并恢复。 在第三步中, 拍摄 处理后带有基准标记的被测样品 6b 的图像。 在最后一步, 确定 6a的图像和 6b的图像中基准标记的坐标, 并利用经过处理 10前和处理 10后的变化量来 计算织物材料的尺寸变化和转曲度。
本方法进一步包括,计算被测样品表面每个基准标记的初始坐标和最终坐 标的变化, 其中, 初始是指处理之前, 最终是指处理之后。 由图 4看出, 图像 处理软件的算法和程序包括以下步骤: 获取图像, 11 , 分割图像 12, 识别基准 标记 13, 确定基准标记坐标 14, 计算尺寸变化和转曲度 15。
获取图像 11 : 计算机 1通过与成像装置 2通信, 获得处理前带有基准标 记 6a和处理后带有基准标记 6b的被测样品 6的数字化图像;
• 分割图像 12: 通过边界检测,,从所获取的图像上选择合适的分割边界的 起始点, 找到基准标记 6a和 6b的轮廓;
识别基准标记 13: 用霍夫变换找到基准标记的两条相交线的交点, 用鼠 标也可以找到这个交点;
确定坐标 14: 假设基准标记交点坐标为 (X, y), 其中 x是相对于起始点 的横坐标, y是相对于起始点的纵坐标; 假设成像装置 2所在区域范围沿水平 方向为 Sx, 沿垂直方向为 Sy, 则基准标记的坐标为 (x,Sx, y Sy)0 成像 装置 2的区域范围,由被测样品 6与成像装置 2之间的距离或者是与聚焦透镜的 距离来决定。
.计算处理 15 : 计算出基准标记在处理前和处理后的移动, 用以表征尺寸 变化和转曲度的参数为 Dh, DA^P S。 如图 5所示, 图 5 (a)是处理前的基准 标记 6a示意图, 图 5 (b)是处理后的基准标记 6b示意图, 其中 A1至 A4各 点是处理 10前基准标记 6a的位置, B1至 B4是处理 10后的基准标记 6b的位 置, A1至 A4, Bl至 B4各点分别连接成直线, 形成直线 A1A2,A2A3,A3A4 和 A1A4, 以及 B1B2, B2B3, B3B4和 Β1Β4。 α 1是相邻直线 A1A3和 Α3Α4 所组^的夹角, α 2是相邻直线 A1A2和 Α2Α4所组成的夹角, β 1和 β 2是 处理后相应的角度。
6
更正页 (细则第 91条)

Claims

权 利 要 求
1、 一种织物尺寸变化和扭曲度的数字化测量***, 其特征在于, 包括 用于给被测样品做标记的标记模板;
用于形成包围空间的照明匣;
用于拍摄被测样品图像的成像装置;
用于在照明匣内安装成像装置的固定装置;
用于在照亮被测样品表面的照明装置;
用于在照明匣内安放和固定被测样品的载样台;
一套进行图像处理的软件包,在此,所述软件包用于获取图像、图像分割、 标记识别、 确定标记坐标以及计算尺寸变化和扭曲度; 以及
与成像装置连接运行所述软件的计算机。
2、 一种织物尺寸变化和扭曲度的数字化测量方法, 其特征在于, 包括: S1 用标记模板在被测样品表面印上基准标记, 采用数字成像装置对带有 基准标记的被测样品进行拍照;
S2 将被测样品放入相关设备中进行物理或者化学处理, 使被测样品经过 洗涤、 烘干和恢复过程;
S3对处理后的带有基准标记的被测样品进行拍照;
S4 根据处理前和处理后的被测样品图像确定基准标记的坐标, 并根据基 准标记的坐标计算被测样品的尺寸变化和扭曲度。
3、 用于织物尺寸变化和扭曲度的数字化测量的图像处理软件的一套算法 和程序, 其特征在于, 包括获取图像, 图像分割, 标记识别, 确定标记坐标, 以及计算被测样品在处理前后的尺寸变化和扭曲度。
4、 根据权利要求 1所述的织物尺寸变化和扭曲度的数字化测量***, 其 特征在于, 所述成像装置是数字化拍照装置。
5、 根据权利要求 1所述的织物尺寸变化和扭曲度的数字化测量***, 其 特征在于,所述标记模板用于在拍摄前在所述被测样品表面标上四个或四个以 上基准标记, 所述标记模板包括盖板, 底板以及连接盖板和底板的轴, 所述标 记模版将所述被测样品夹持和固定在所述底板上, 所述标记模版上设有开孔, 用于通过其在被测样品表面画上基准标记。
6、 根据权利要求 1所述的织物尺寸变化和转曲度的数字化测量***, 其 特征在于,包括用于安装所述成像装置的三维滑轨,所述三维滑轨使成像装置 能沿三个方向移动,从而核准被测样品和成像装置之间的位置;所述成像装置 的方位是可调整的。
7、 根据权利要求 1所述的织物尺寸变化和转曲度的数字化测量***, 其 特征在于,所述照明匣为安放和固定被测样品提供了一个包围空间,所述照明 匣还包括用于放置被测样品的载样台, 所述载样台是可移动的。
8、 根据权利要求 1所述的织物尺寸变化和转曲度的数字化测量***, 其 特征在于,所述照明装置安装在照明匣内,所述照明装置包括多个照明光源能 在所述包围空间内提供控制精确的光照;每个照明光源对称安装在载样台上方 从而保证照明匣内的光照均匀; 所述照明光源选用能提供标准照明的光源。
9、 根据权利要求 3所述的用于织物尺寸变化和转曲度的数字化测量的图 像处理软件的一套算法和程序,其特征在于,所述尺寸变化和转曲度是用参数 Dh , Dv 和 S 来表示的, 则织物尺寸在水平方向 的变化为 d^l, B2) + d(B3, B4) d{A\, AT) + d(A3, A4)
Dh= 2 " 2 χ驅 , 织物尺寸在垂直方向的变化为 d(A\, A2) + d(A3, A4)
2
d(B\, B3) + (B2, B4) d{A\, A3) + d(A2, AA)
DV= 2 ― 2 :: , 织 物 的 转 曲 度 为
2
α\ + 2 β\ + β2
S=-^— ~~ -^— x l00% , 其中 A1-A4 四点是处理前四个基准标记的位置, a\ + 2
~ 2 ~
B1-B4是处理后四个基准标记的位置, a 1是相邻直线 A1A3和 A3A4所组成 的夹角, α 2是相邻直线 A1A2和 Α2Α4所组成的夹角, (3 1和 [3 2是处理后 相应的角度。
替换页(细则第 26条)
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