It considers edge points and dark or light area when embedding watermark information.

在嵌入水印信息时先考虑边缘点，再考虑亮度较暗和较亮区域。

youdao

Homomorphic filtering is a frequency domain operation to compress image light area and enhance contrast.

同态滤波是一种将亮度范围压缩和对比度增强的频域处理方法。

youdao

The results indicated that five of them have suitable spectra and light transmissivity decreased in UV-light area but keep above 85% in visible light area, which we've expected before.

结果表明，其中有几种薄膜光谱匹配性较好，与空白对照膜相比，紫外光的透光率降低，但可见光透光率都在85%以上。

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Nothing happened when they turned on the light in cells in an area of the brain called the subthalamic nucleus.

VOA: special.2009.04.07

The area has been described as a kind of oceanic desert, with light winds and slow moving water currents.

VOA: special.2009.09.22

When they used the telescope to create images of the planet, they found an area that appeared dark in light the human eye could see.

VOA: special.2009.08.25

Note the oddly light area where the diver was.

FORBES: Lion's Mane Jellyfish Image: This Is (Literally) How Things Blow Up On The Internet!

The robots currently are being assembled at QBotix headquarters in a non-descript building in a light industrial area of Menlo Park.

FORBES: Can Solar Robots Cut The Cost of Renewable Energy?

The claim alleges the petrol station was at fault for failing to ensure she was "reasonably safe", making no attempt to light the area or warn her about the step.

BBC: Norfolk kerb trip PC Kelly Jones 'continuing claim'