It firstly extracts several target candidates through the preprocessing including median filtering, edge extraction, sea-sky line detection and morphological filtering of infrared sequence images.

通过对红外序列图像进行中值滤波、边缘提取、海天线检测和形态滤波等预处理，提取出若干个候选目标。

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Behind the rotunda the slender trees with yellow leaves down drooping, and through them just a line of sea, and beyond the blue sky gold-veined clouds.

在圆形大厅后面是垂着黄叶的细长的树木，穿过树叶可见一线大海，在那之外便是漂浮着金色纹脉白云的蓝天。

youdao

Behind the rotunda the slender trees with yellow leaves down drooping, and through them just a line of sea, and beyond the blue sky gold-veined clouds. Tum-tum-tum tiddle-um!

在圆形大厅后面是垂着黄叶的细长的树木，穿过树叶可见一线大海，在那之外便是漂浮着金色纹脉白云的蓝天。

youdao

And so despite my status as a running refusenik, I found myself herded, among a crowd of far fitter, healthier, sportier types, into a pen behind the start line, part of a sea of red t-shirted runners beneath a threatening gray sky.

CNN: Crossing the Olympic finish line