low compression ratio 中文意思是什麼

low compression ratio 解釋
低壓縮比
  • low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. 2, under equally see the quantity, compress the calculate way s exportation code plain deal connect the good and bad that decide its function of the good and bad, or say, output the code the term of same alike rate the bottom, and the portrait quantity reflected the function of the compression calculate way. adopt with dv all because of the m - jpeg an inside compress the way, efficiency of their compression certainly want lower than mpeg2. certainly, this is an average circumstance, at the time that low code rate, the mpeg2 can compare the m - jpeg compression the ratio high and a lot of but keep the good diagram to resemble the quantity ; but at request the diagram to resemble the quantity the good time for example the sow the room program edit with empress period creation, their difference to is not very big. too is to say, just at the compression efficiency that not emphasize the portrait quantity that the circumstance, mpeg2 is high

    2在同樣的視頻質量下，壓縮演算法的輸出碼率直接決定其性能的優劣，或者說，輸出碼率相同的條件下，圖象質量的優劣反映了壓縮演算法的性能。由於m - jpeg和dv都是採用幀內壓縮方式，它們的壓縮效率當然要比mpeg2低。當然，這是一個平均情況，在低碼率的時候， mpeg2可以比m - jpeg的壓縮比高很多而保持較好的圖像質量而在要求圖像質量很好的時候比如演播室節目編輯和後期製作，它們的差別不是很大。
  2. Lcr low compression ratio

    低壓縮比
  3. 3 analysis on axial compression ratio of l, t and + - shaped columns is undertaken. it indicates that for l and t - shaped columns, axial compression ration is very low when web is in compression, but for + - shaped columns, axial compression ratio approaches to that of rectangular columns

    3對l 、 t 、十形柱軸壓比限值進行計算分析，指出l 、 t形柱當腹板受壓時軸壓比限值很低，十形柱軸壓比限值同矩形柱相差不多。
  4. So the subjective iqa can not be used widely. today image encoding pursues low error rate and high compression ratio, which needs effective iqa

    客觀保真度這一概念用來描述評價對象與參考圖像間的相似程度，即是對圖像逼真度的測量。
  5. One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system

    第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。
  6. Puts forward a cascade heat pump unit to solve some application problems of conventional units in winter in cold regions, such as high compression ratio and low heating efficiency

    摘要提出了一種復疊熱泵機組，以解決常規空氣源熱泵冷熱水機組在寒冷地區冬季使用壓縮比高、效率低等問題。
  7. The block - based fractal image compression method has a low compression ratio, so simple region - based fractal image compression is introduced, then the competitive region - based fractal image compression method is presented. the experimental results show that the compression ratio is effectively improved at a similar psnr value. wavelet - fractal image compression has been received widely attention

    由於基於塊的分形圖像壓縮方法的壓縮比不高，對此進行改進，先介紹簡單的基於區域的分形圖像壓縮，然後提出基於區域的競爭分形圖像壓縮演算法，並進行實驗，實驗結果表明，該方法在保持一定的信噪比的情況下，有效的提高了壓縮比。
  8. Experiment results show that in low bit rate environment, the new image compression scheme performs better than jpeg in the aspects of perception and psnr ( peak signal noise ratio )

    實驗結果表明該演算法在低碼率下，相比jpeg ，獲得了在視覺效果和峰值信噪比方面更好的恢復圖像質量。
  9. The low frame rate of the monitoring video also makes it possible to use more complex arithmetic to gain greater compression ratio

    監控視頻的低幀率，也為視頻實時壓縮提供了更充裕的時間，有可能採用復雜的演算法，獲得更好的壓縮效果。
  10. The experiment results show that this pca algo rithm can get the same compression ratio as the klt algorithm with low complexity

    實驗結果表明，該方法完全可以達到與k - l變換相當的壓縮效果。
  11. The main contents are followed below : ( 1 ) for the aim of knowing the characteristics of main factory building structure frame columns of large - scale thermal power plants, nine high strength concrete frame columns with high axial compression ratio and six slender ordinary strength concrete frame columns with high axial compression ratio were tested under low reversed cyclic horizontal loading for the very first time, and thus the influencing factors of normal section bearing capacity, such as concrete intensity grade, axial compressive ratio, slendemess ratio, the type of stirrups and stirrup ratio, etc, the anti seismic deformation capability of frame columns were acquired

    本文主要研究的內容有： （ 1 ）首次針對火電廠主廠房結構框架柱的特點，對9個高軸壓比高強混凝土框架柱和6個高軸壓比普通混凝土框架長柱進行了低周反復水平加載試驗，獲得混凝土等級、軸壓比、長細比、配箍形式及配筋率等對框架柱的抗彎及抗剪承載力、抗震變形能力的影響因素。
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