46 results about "Destructive sampling" patented technology

The invention discloses a transmission spectrum non-destructive quantitative evaluation method of apple watercore, and belongs to the technical field of rapid evaluation of food quality. The transmission spectrum non-destructive quantitative evaluation method disclosed by the invention comprises the following steps: non-destructively obtaining entire optical information in an apple by using an near-infrared transmission spectrum collection system, collecting an image of a equatorial profile of the apple by using a camera, dividing the image by using an encirclement and suppression algorithm, calculating a watercore area and a sectional area of the apple, using the ratio of the area of a watercore section on a cross section to the area of the entire section as a quantitative prediction index, establishing a transmission spectrum non-destructive quantitative evaluation model of the apple watercore by using a multielement correction method after preprocessing an obtained near-infrared transmission spectrum, so as to achieve the non-destructive quantitative prediction of the apple watercore. According to the transmission spectrum non-destructive quantitative evaluation method disclosedby the invention, the degree of the apple watercore is quantitatively predicted by using the transmission spectrum technology, thereby avoiding the disadvantages of destructive sampling of a sectionvisualization method, and solving the technical problems of low recognition rate and blurred boundary of the watercore.

The embodiment of the present invention provides a method and system for estimating the number of tree leaves, which can directly determine the capacity of each branch on the target tree by visual inspection, and then determine the target tree through the preset branch capacity-branch number lookup table The number of branches contained in each branch on the target tree; based on the capacity of each branch on the target tree and the number of branches contained in it, determine the total number of branches corresponding to each capacity branch on the target tree, and according to the capacity of each branch on the target tree The total number of branches corresponding to each capacity branch and the average number of leaves on each branch on the target tree determine the number of leaves on the target tree. The entire estimation process does not need to cut down the target trees, and can be achieved without damage. It is not only efficient, but also more suitable for situations where destructive sampling is limited. It enriches dendrology and plant community carbon measurement methods .

The invention relates to a verification method for indirect measurement of a ground leaf area index (LAI). The method includes the steps that a virtual plant geometric model base and a virtual vegetation scene base are set up; an observation scheme is designed, simulation implementation is carried out in a virtual vegetation scene according to the principles of all indirect measurement methods of the ground LAI and the observation scheme to form a simulation database; the sum total of the area of xylon parts and the area of triangular patches of leaves in the scene is counted to obtain true values of the LAI, the WAI, the PAI, the parameter of the xylon total area ratio, base components of canopies and the xylon component aggregation index; simulation results of all the measurement methods of the LAT are calculated, the true values of the scene are taken as the simulation calculation results to verify reference values, and the existing indirect measurement methods of the ground LAI are improved, realized in the virtual vegetation scene base and repeatedly circulated to obtain the final existing indirect measurement method of the ground LAI. The verification method does not need to destructively sample vegetation, manpower and material resource investments are small, and verification efficiency, precision and expandability are improved substantially.

The invention discloses a living body measurement method and device of thickness of a rice leaf. The method comprises the following steps of: selecting the growing rice leaf as a measuring object; measuring the fixed position of the rice leaf by using a special leaf thickness measuring device; placing the fixed position of the leaf between a rice leaf contact plate and a base of the leaf thickness measuring device and keeping the fixed position away from the main vein of the leaf rice; when the full-leaf thickness of the fully spread rice leave is measured, measuring leaf tip, middle and base, wherein the base measuring point of the rice leaf is at 2 / 3 of the full leaf length; and averaging the measured leaf thickness data of three points, wherein the obtained average value is the thickness value of the full leaf. The method can directly measure the thickness of the living body rice leaf so as to improve the efficiency, simplify the operation, reduce the cost and improve the accuracy;and the method can perform living body measurement to the rice leaf thickness in the field so as to eliminate the sampling steps, implement the continuous tracking to the sample and eliminate the complex process of the data statistic analysis of the destructive sampling experimental data.