明暗

Questions for Discussion How would you describe the tone of "A Modest Proposal?"

问题的讨论你如何会描述"一份适度的提议"的明暗？

In the landscape paintings of Hippolyte Adolphe Taine, especially the ocean landscape paintings, vivid 3D light and shadow style was replaced by brightness relationship full of emotion, directly inspiring the impressionist to catch solid and clear light in illusory and loose color strokes.

在泰纳Hippolyte Adolphe Taine的风景画特别是海景画中，鲜明的立体光影造型为充满情绪气氛的明暗关系所取代，直接启发了印象派在缥缈而松动的色彩笔触中把握坚实而清晰的光线。

Topics include: line generators, affine transformations, line and polygon clipping, splines, interactive techniques, perspective projection, solid modeling, hidden surface algorithms, lighting models, shading, and animation.

章节中包含：线的生成，仿射转换，线和多边形的裁切，样条线，互动技术，透视投影，实体模型，隐藏面算法，明暗模型，阴影，和动画。

Though Mr Galston soon had to go off to war himself, and then got sidetracked on the effort to find a new plant substitute for rubber, it did not occur to him that his discovery had military uses. It might, perhaps, be helpful to farmers. He was a botanist, who once spent a happy year in Stockholm isolating catalase from spinach leaves, and who patiently observed "rhythmic opening and closing in the dark in the plant Albizzia". He believed in the inherent beauty and usefulness of science.

尽管很快 Mr Galston 就上了战场，但之后他偏离军事，转而努力寻找取代橡胶的新植物，他从未想过他的发现有着军事用途，他的发现可能，或许对农民有帮助吧，他是一个植物学家，在斯德哥尔摩从菠菜叶中提取接触酵素，渡过了愉快的一年，还耐心的观察"合欢花在明暗交替中有节奏的开合"他信仰科学内在的美和效用。

A new pinprick of light that appears in one image and seems to fade over time can indicate the temporary brightening and dimming of the stellar explosion.

一张图像上出现针孔大小的新亮点，并随着时间的推移好象在渐渐变暗，这可以表明恒星爆炸时的明暗变化。

The compound eyes of cotton bollworm showed higher sensitivity under similar conditions; for one insect, the compound eyes were more sensitive to light in the evening than at the daytime, with dark eyes had higher sensitivity than bright eyes;(4) The comparison of the transition between different adaptative state at different time showed that the compound eyes of cotton bollworm showed more obvious daily rhythm.

在相同条件下，棉铃虫复眼表现出更强的敏感性；同种昆虫复眼夜间比白天敏感，暗眼比亮眼敏感；（4）对不同测试时间复眼明暗状态转化的比较表明，棉铃虫复眼的ERG反应具有更强的昼夜节律性。

The algorithm is applied in the segmentation of Magnetic Resonance Imaging of human brain for the 3D reconstruction on dependent of different human tissue structures, in which the problem on wraps between different tissues and fuzzy edges between the different regions in medical volume data may better be settled, which can not be well done by the typical"hard"segmentation using binary logical representation.(3) An accelerated algorithm of volume rendering with X-ray perspective and Phong shading effect based on textures mapping and blending is presented for realizing 3D reconstruction of medical volume data by 2D texture mapping and blending, in which the accelerated algorithm of window transformation is utilized to computing voxels' gray scales and opacities to produce X-ray perspective images, and Phone illumination model is used to import world light sources and an unit spherical surface under the same shading environment as the actual volume rendering is employed to simulate the real reflectional light of per-voxel so that 3D reconstruction possesses illumination effect in the world. Furthermore, 3D matrix transformations of degree rotation and other operations of 3D object are studied, and a fast equivalent method of corresponding shading correction is brought forward to improve its interaction speed in volume rendering process.

该方法利用体数据的窗口变换加速算法将医学体数据转换为计算机显示值，可以得到具有X光透视效果三维图像；该方法提出的Phong明暗处理加速算法利用Phong光照模型引入外部光源，使用一单位球面体来仿真体数据的法线矢量集所产生的反射光强，以快速得到每一个体素的反射光强度，使物体的三维重建达到现实世界中人眼直接观察的逼真效果；此外，还研究了三维重建物体的三维旋转等矩阵变换，提出了一种Phong明暗修正的快速算法来保证了体绘制中三维几何变换的多视角观察的交互速度。

Comparing with the method proposed by Reinhard et al., this study improves the deviation in varieties of color, and separates the lighting adaptation range from the original system to achieve more real effect.

在本研究中并建立一个三维的虚拟绘图环境，根据瞳孔对於光暗的适应性，以顶点著色与像素著色技术来产生模拟场景明暗变化的效果。

To Lieutenant Yang he said,"Monitor the engine thermals and push us past one-third power… right up to the dark-line limit."

他对杨上尉说，&监控引擎热值，让我们以三分之一全速前进···一直到明暗交界的暗边顶点。&

Color negative of the original shading and orginal instead, color and orginal complementary.

不暗白负片草稿上的明暗度与原风陡互异，色彩与原风陡互补。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失