inherent correlation meaning in English

固有相关

Thirdly , a new method of resizing color image is presented , where the processing of color image data is carried out by using bivariate ( vector valued ) blending rational interpolation . this method is more effective on color image processing , because of the inherent correlation that exists between the image channels , and the nonlinearity among image pixels
接着，从彩色图像三基色之间存在相关性的角度出发，提出了利用二元(向量值)混合有理插值进行彩色图像的缩放方法，该方法也可用于灰度图像处理，此时向量有理插值处理转为标量有理插值处理。