图像存储空间

In this method,a 3-D Color Look-up Table is built in which only 18 bits are applied to represent one kind of color,instead of conventional 24 bits.

1引言图像处理需占用大量的存储空间和计算时间，图像处理算法的实时性是我们要解决的一个重要问题。

Because of what hardware can and cannot do, it is often a trade-off between a certain number of static graphics images, audio sound, full-motion video and text.

总结 显然多媒体决不是一种从前的技术由于硬件的能力要权衡选择静态图像，显然多媒体决不是一种从前的技术，由于硬件的能力要权衡选择静态图像，决不是一种从前的技术，声音，全运动影像和文本，可以推测，文本信息占用存储空间最小。

Grey scale processing is to convert the colorful image to grey scale one, in order to reduce storage space and raise operation efficiency.

图像灰度化即是将真彩色的车辆图像转变成灰度图像，目的是减少其电脑存储空间和提高运算效率。

In the paper,a fast image retrieval method based on the DCT domain and correlative feedback is presented,which aims at JPEG images and uses color layout descriptors in the MPEG7 standard. As the method only needs entropy decoding,the speed of extracting image features is improved and storage space saved. The experiment result shows that the method has a high retrieval speed and a good effect.

文章针对JPEG压缩图像，结合MPEG 7中建议的颜色布局描述符，提出一种带相关反馈的基于DCT域的快速图像检索方法；该方法只需要熵解码，可提高图像特征提取的速度、节省存储空间；实验结果表明，此方法具有检索效率高、检索效果好的特点。

The invention intercepts a pixel area with the scheduled size in each frame from several continuous frame images in turn, reduces the intercepted pixel area to the largest size which the scheduled storage space can store and is stored in the scheduled storage space, then detects the face in the stored pixel area, hence, due to the minification of the storage space pixel area having the same size smaller than the whole frame image, thereby increasing the pixel area and reducing and storing the object face size compared with the whole frame stored in the storage space after reducing the frame image.

本发明依次从连续几帧图像中的每一帧中截取预设大小的像素区域，并在每次截取后，均将截取的像素区域缩小至预设存储空间所能够存储的最大尺寸后存储在预设存储空间内，然后在存储的像素区域内检测目标人脸。

To improve the transmission efficiency and reduce the storage requirement, efficient encoding algorithms should be used to remove the residual information in images, and fewer bits should be used to describe images on restrictions of given distortion. Vector quantization is an efficient lossy compression technique, whose prominent virtues are high compression ratio and simple decoding process, so it has become one of important compression techniques for image coding.

为了提高传输效率和减少存储空间，必须采取有效的压缩编码算法消除图像中所包含的各种冗余信息并在给定的失真条件下使用尽量少的比特数来描述图像。

Wavelet transform is done in image space directly. The multiplication number of the method is rough 25% less than the conventional implementation based on 1-D tensor product, so the memory usage is also reduced.

该方法进行小波变换时直接在图像空间进行2维分解，其乘法运算次数比传统的基于1维张量积的2维提升整数小波变换减少约25％，从而也减少了存储空间。

For example, suppose we want to sample and quantize an ordinary television picture with a VGA video controller,so that it can be redisplayed without noticeable degradation.

数字图像通常占用存储空间很大，例如，要得到没有明显的质量下降的NTSC电视图像，数字化时就必须使用640×480×8/像素的矩阵，这样就需要307 200个8位像素，共2 457 600位，并且许多情况下还要求更精确的采样。

Digital pictures are often very large. For example, suppose we want to sample and quantize an ordinary television picture with a VGA video controller,so that it can be redisplayed without noticeable degradation. We must use a matrix of 640×480 pixels, where each pixel is

数字图像通常占用存储空间很大，例如，要得到没有明显的质量下降的NTSC电视图像，数字化时就必须使用640×480×8/像素的矩阵，这样就需要307 200个8位像素，共2 457 600位，并且许多情况下还要求更精确的采样。

Thirdly, it introduces the theory of the imagesegmentation and frequent segmentation technique. The aim of the imagesegmentation is to mark off the interested region of the image, which is done to thecorresponding image processing to reduce the operation time and save the storagespace. At last, it mostly introduces the compress technique based on the wedgelet, andcompares the CART model which is introduced by Donoho and the improved modelby Romberg et.al. with the model of the article, then compares the image ofprocessing based on the three methods.

然后，介绍了图像分割理论和常用的分割技术，图像分割的目的是划分出感兴趣的图像区域，进行相应的图像处理，减少运算时间和节省存储空间；最后，主要介绍了基于伸长小波压缩的技术，将目前主要的算法----Donoho提出的CART模型和Romberg等人基于此的改进模型，与本文所提出的算法模型进行了比较，并对三种方法处理的效果图作了详细的比较。

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