为有效识别光斑中心，针对无衍射激光斑光图像特点，提出了一种由亮度梯度确定图像中心的方法。
A method to center an image by brightness gradient is proposed based on the features of the non-diffracting laser circular image.
将研究结果应用于普通稠油油藏，给出了利用启动压力梯度确定极限泄油半径及合理井距的理论计算方法。
This method can be used for conventional heavy oil reservoir to calculate ultimate drainage radius and reasonable well spacing through starting pressure gradient.
确定每个高度的相关颜色梯度，提取每个像素的高度数据，然后将第二级图像分层以生成计算出的高度图像。
The associated color gradients are determined for each altitude, height data for each pixel is extracted, then the secondary image is sliced to produce the computed altitude images.
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