查询词典 pixel

By the data in the images from the two frequency grating projector , the absolute phase at each pixel is then unwrapped by comparing the two wrapped phases and it is suit for the great craggedness of the measurement object.

在光学投影栅线法测量物体三维轮廓理论的基础上，本文提出了双频投影栅线法物体轮廓测量技术，通过两种不同频率的光栅投影图，能够直接得到包含物体高度信息的绝对相位值，能够实现具有陡峭边沿物体的测量，实验结果表明，利用该方法能够显著提高物体轮廓测量精度。

Dimidiate Pixel Model with the soil and land-use data, and NDVI were used to compute...

使用该系统，作者对东圳水库流域的土壤侵蚀模数的空间分布进行计算，并对计算的结果进行分析。结果表明，该系统模拟的结果可靠，建立的系统可以应用于实际工作中。

The research results showed that: The accuracy of dimidiate pixel model is better than that of the experiential model during the vegetation retrieval.The curve degree of the cubic curve fitting is the best during the three built experiential models, but the experiential model is very simple and used widely.

研究结果表明：植被盖度反演中，像元二分模型的精度高于经验模型的精度，在建立的三个经验模型中，又以三次拟合曲线的拟合度最高。

Vegetation fractions in different districts of Wuhan were calculated based on remote sensing images (TM images and ETM+ images) in 1988,1991,1996 and 2002 by employing method for dimidiate pixel model,and the vegetation fraction maps of different periods were generated to analysis the temporal change of vegetation fraction of Wuhan area.

利用1988、1991、1996和2002年4个时相的TM和ETM+遥感影像为数据源，以归一化植被指数像元二分法为植被覆盖度估算模型，计算了武汉地区不同时期的植被覆盖度，生成了该地区不同时序的植被覆盖度图，以此分析武汉地区植被覆盖度的时空变化。

Based on the dimidiate pixel model and NDVI, this paper estimated the vegetation fraction in Huairou District by remote sensing. In the total, the vegetation coverage wass increased during the passed 12 years.

本文基于像元二分模型，利用归一化植被指数NDVI，对怀柔区1992年和2004年植被覆盖度进行了监测，并对十几年来的植被覆盖变化情况进行了统计分析。

The Three-North Shelter Forest Program covers 13 provinces of China, which brings great influence to the eco-environment of North, Northeast and Northwest China (Three-North Regions). In this paper, the vegetation cover in the Three-North Regions was estimated by using a dimidiate pixel method based on the MODIS-NDVI data in August 2001 and 2007, with its spatiotemporal changes analyzed.

以像元二分模型为基础，构建了基于归一化植被指数的植被覆盖度定量估算模型，并利用MODIS-NDVI时间序列数据，估算了三北防护林工程区2001年8月和2007年8月的植被覆盖度，分析了三北防护林工程区植被覆盖度的时空变化特征。

With the ETM+ as data source,the Dimidiate pixel model was established based on vegetation index to extract vegetation coverage in Maowusu sandland.

以ETM+为数据源，基于植被指数建立像元二分模型，对毛乌素沙地进行了植被覆盖度提取，然后根据实地调查数据对提取结果进行了精度验证，二者线性相关系数达到了0.92，平均精度为79.4%。

The elevational images could be obtained by resolving camera parameters and correcting digital images with numerical differential. Throughout image processing, the marks on the undercarriage wheels and airframe were high-accurately tracked and identified based on sub-pixel. The trace, velocity and other parameters of the undercarriage were gained by data processing.

同时，应用摄影测量原理，通过对摄影机的标校，获得了摄影机的参数；利用图像的数字微分纠正原理，对所摄图像进行修正和重建，得到摄影机的正摄影像，进而利用图像处理方法对起落架机轮及机身测量标志进行基于亚像素的跟踪判读；对判读数据进行处理，得到了飞机着陆道面段的运动轨迹、速度等数据。

A line or fillable with an outline that is drawn greater than one pixel wide is a thick shape.

超过一个像素值的线条或者勾画出的粗轮廓。

A line or fillable with an outline that is drawn only one pixel wide is a non-thick shape.

非粗形状：线条或者可填充的形状使用1像素宽度线勾画轮廓。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。