TW588285B - Method to compute the foot pressure distribution by image-scanning - Google Patents

Abstract

The present invention is a method to compute the foot pressure distribution by image-scanning, which is mainly to: (1) obtain the scanned image of foot in the natural standing stature; (2) convert all color levels of the image file into digital (binary) code; (3) read the binary code of all pixels in the image files by a second-order matrix in numerical computation; (4) divide the foot into several regions, integrate the second-order matrix of every region, so as to compute the weight of the body weight distributed in the region; (5) multiply the regional weight by the correction factor, so as to obtain the regional mass value; (6) compute the average distribution pressure in every region. The whole method is speedy, the obtaining of foot pressure is rapid and accurate, which is helpful to manufacture a medical shoe pad and a customized shoe pad.

Description

Correction Especially the method of calculating the foot pressure distribution in the two-scan image is the best. The number derivation method calculates the average pressure of each area of the sole of the foot. Because the foot is at rest, if the foot such as the foot dies, there is no consequence, and it can be adjusted to reduce the local patient's force load. Walking posture medical specialty or exercise pressure long-term bottom pressure. I know that even the normal forward walking pressure set is different. Therefore, under the state of the human foot with the insole, the foot distribution is not normal. If the life is endangered, the foot state of a healthy person is often Re-centering to avoid foot injuries and the state, it is not easy to cause two for wearing, the system will not be too large, the bacteria will invade, and the bottom feels that the foot is injured, which cannot be easily followed by the secondary injury. Change to the whole body to make each person enter into the body for a long time. For example, in the short partial pressure, for example, sugar often feels the pressure on the foot, so the weight of the good foot pressure, the size of the body is not easy to cause disease, it will easily lead to amputation. When the pressure is too high, the force is urinary disease and lower foot pressure. Therefore, the force is fast and fast. You need to control the uneven distribution, so the foot pressure is deformed regardless of the place, causing nerve damage. Average severity feeling 'will self, thereby reducing limb deformity in foot pressure of the reaction are adjusted for the specific person.

… At present, the production of traditional medical special insoles is mainly made of plastic materials (such as dry soil, gypsum, flower arrangement sand pads, etc.) to obtain the shape of the soles of the feet by attaching the soles of the feet, and then the simple plaster molds are turned, and the doctor Modify the foot plaster mold according to the patient's needs, and take a suitable thickness of PU plastic material and put it on the mold for hot pressing. Finally, the obtained plastic cushion body is tailored according to the patient's foot shape to make the required insole. The effect of even distribution of foot pressure can be achieved by wearing it.

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In the process, the modification of the mold has an irreversibility, and only by the professional judgment of the physician, it lacks an objective quantitative data for reference and is prone to errors. For the above situation, there is currently a computerized device for measuring the pressure of the sole of the foot [refer to the bulletin No. 35199〇 and No. 386616], and according to this equipment to test the static pressure and dynamic pressure distribution of the foot Customers! With the information received, doctors can have quantitative and objective data references. Then, doctors can use the computer aided design simulation system if they use Reverse Eng i nee ring to make the foot shape. Easily modify the special foot pads required by patients with mouth and leaf to achieve the qualitative and quantitative purpose of uniform foot pressure distribution. 'Design and make a special insole, this special shoe last's shape > / shape, structure design rules For more precision. λ: 'The above-mentioned assistance with scientific instruments to improve the functional knots and pieces of shoes' and the biomechanical study of correcting the pressure on the soles of the feet, combined with the direction engineering technology and the derivation of the theoretical model of the feet, make the feet There is a quantitative objective condition for the reform and design of the pad mold, and it can improve the insole design No.1, which is a major breakthrough in technology. However, this measurement method based on the analysis of the fixed pressure of the foot pressure distribution is quite complicated, especially the soles of the feet. The pressure is small, and the relevant data information such as the shape of the foot needs to be measured separately. Once the measurement data of the foot pressure has not been integrated into a set of effective and convenient measurement, the formula cannot be obtained quickly and reliably. The data is analyzed, so it is a waste of time and money. Therefore, in view of the conventional measurement and regulation of foot pressure distribution information, the inventor has all the above-mentioned shortcomings.

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ID J Wuzheng MM 9112 Following, --- year, month, five, description of the invention (3T --... multiple trials and improvements, the invention of this invention-the purpose of the present invention is to provide a convenient, foot pressure level, distribution Get the foot quickly; measure it as the basis for manufacturing the shoe last. The method of the outer shape, together with the diagram, explains the present invention in detail: 4a When the human body naturally stands, the weight of the whole body is under pressure at this time The area of the blood vessel == the sole of the foot's pressure; the area of ^, because the area of larger m: Suffering: the area with less pressure, the color will be more: the background color: will be lighter distribution = 仃"Foot" image scanning, the pressure on the sole of the foot, the greater the distance from the scanning platform = = when scanning, based on this principle, the natural color difference in the deeper image scanned by 纟 when standing naturally will be counted For the image, please refer to the picture shown in the figure-. The cloth state.: Scan the image of the soles of the feet in the If μ standing position; ”Change the color gradation to a binary digital math; The binary digital code; read in a second-order matrix Take all the pixels in the image file. For several distinctions, calculate the second-order matrix product of the weight range of the total body weight of the area. Multiply the area weight value by the correction: 6. Calculate the average distribution pressure of each area. Get the area weight value; For each step, The details are described as follows: Page 7 Standing on the bottom of the foot in a natural standing position after scanning. After scanning the image / scanning platform, put your feet in direct contact with the sweeping umbrella to get the test subject 1 = 'scanning results such as Figure-Figure * (;: ΐ by the soles of the feet shadow shadow 象 象 in the image of the soles of the soles of the main compression area, the second middle and one foot gradually diminished from the pressure and deepened; especially the soles of the foot Know: The farther the platform is, the deeper its color is .... The area under pressure, the greater the color scale value from this distance, the more the force in the area will be 2 55 to ◦, according to the two i number in the Λ value calculation towel To read all the pixels in the image file with the order of moments ::; Calculate the software to read the above-mentioned two-digit digital code of each-pixels for | Shedan, the first-order matrix integration of each region, and calculate This area is assigned the full letter & ^ ^ weight value: from the result of the second item above, we assume that Order ', where multiplying a proportional correction factor f (f, modi f ied factor)' the following formula (Formula 1) shows: wk 〇c fxBk wherein, K: The sole in different regions Bk: area weight value

Wk: weight of the area, f = f (insole material ····) B k is obtained by the following formula (formula 2)

588285 r end V. Description of the invention (5)

I k 〇 '— B gradation value x coordinate y coordinate formula, b 5 · Multiply the area weight value by the repair factor to obtain the area weight value: as shown in the following formula (Equation 3): w = / x (多 〆 In the formula k, w: total body weight (N). 6. Calculate the average distribution of dust power in each area: The following formula (equation 4):

In the formula Ak, A: area of the sole of the foot (ιηπι2). Here are some examples to illustrate: 1. Obtain the scanned sole image, such as the weight of the subject: 50kg (490.5N) ', and the sole image is shown in the first figure. One or two · Convert all the color levels of the image file into binary digital codes (such as the second figure ^ and 2 according to the actual size of the image obtained to calculate the sole area of the foot is 218.5mm using the length_width above, and the widest point is 80_. Limei No. 5 shoes, that is, according to the comparison table of Niu / Niu /, you can also know the shoe number and the correct shoe number of the recipient. Take the sole image of the foot, which is 285

Case No. 91124853 Description of the invention (6) Li ~ ^ a Correction > III. Plan the soles into an appropriate number of areas (as shown in the third figure), and the bij points in the parent area, get each area according to the above formula 2. Weight (as shown in the fourth figure). Q q · Bring the weight value of each area obtained by Equation 2 into Equation 3 to obtain the weight of each region (as shown in Figure 5). 5. Bring the value of Equation 3 into Equation 4 to find the pressure on each area (see Figure 6). According to the above example, the operator can first plan the pressure 2 domains on the sole according to the needs. Then according to the present invention, it is easy to accurately obtain the image of each area: cloth shape. If the operator wants to know the sole pressure, The state of change is to reflect the pressure distribution status of each unit based on the eight battles, and the output is pressure-based: the layout (as shown in Figure 7) will make it easier to grasp the actual pressure distribution. i. The force distribution information of medical staff when making medical insoles. In addition, the medical shoe lasts required by patients with niL. This insole: the invention and the standing posture are used to make special scanning graphics. Obtain the feet of the subject to be customized-the most comfortable;; = Obtain the value of the foot dust distribution, according to the measured posture. The image of the subject is faithfully reflected in the scanning posture and the soles of the feet. Information on the distribution of tendencies and other variables ^ Pressure reading on the soles of the feet, ㈣shoulders ^ The accuracy of the data paid is extremely high, this page 10 588285 Case No. 91124853 f is replacing zhen: if the amendment V. Description of the invention (7) Invention Implementation , Subjects were to measure the pressure in addition to the size and distribution of the outer sole, and can simultaneously scan the shape of the leg portion, thereby producing as the basis of the insole, and the measurement time can be shortened, respectively, and to simplify the step of measuring the amount of. Since similar products with the same invention features are not known and used in the first place, patent applications have been filed according to law.

Page 11 588285 Case No. 91124853 Revision Modification Brief Description The first picture is a foot scan image. The second image is a converted image of the sole scan image. The third image is a schematic diagram of the planned area of the sole. The fourth figure is a list of weight values of the soles of the feet. The fifth figure is a list of weight values of the soles of the feet. The sixth figure is a list of pressure values in each area of the sole of the foot. The seventh figure is a map of the sole pressure distribution.

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Claims (1)

588285 _ Case No. 91124853 L.: Edge: 丨 month 丨 said amendment _ 6. Application for a patent A method of calculating foot pressure distribution using scanned images, the steps are: 1. Obtain a foot scan image in a natural standing position; 2. Obtain an image All color levels of the file are converted into binary digital codes; 3. The binary digital codes of all pixels in the image file are read by a second-order matrix in numerical calculations; 4. The sole of the foot is divided into several regions, and the second-order matrix of each region is divided Integrate to calculate the weight value of the total body weight allocated to the area; 5. Multiply the area weight value by the correction factor to obtain the area weight value; 6. Calculate the average distribution pressure for each area. Page 13