• Business Home 公司首頁
• Image Bank 共享圖庫
• Video Works 視聽廊
• Blog 博客網誌
• Members Login 顧客員工專頁
• Contact Us 聯絡我們

Scope of Business 業務範圍

Gift Gallery 禮品廊

Digital Workshop 數碼工作室

Digital Studio 數碼影室

Public Notices 法律公告

Customer Info 顧客資訊

On Business 在商言商

營 生乏術,又豈能奢談理想, 何妨先登入有關我們商業服務的網頁, 看看我們的業務.

Without business, we won't be able to keep the web going. For more information about our business services, click the above links to visit our web pages.

Goodies 

獨 樂樂不如眾樂樂，在商也可不言商
Sharing with Us, click the following links to enjoy our special offer or free services. 

Image Bank 共享圖庫

"imagebank.um-gallery.net" hosts all our self-created stock images of resolution up to 800x800 pixel. All these images might be downloaded, copied, and redistributed on condition that they aren't used for any inappropriate purpose or making direct profit from sale of them in the form of image. If you want to know the reason behind our move, be patient. We'll tell the public what drove us to take such action in our blog. 

Video Works 影音作坊

Newly unveiled AV library will certainly give more choices for web building. We're not going to create another legend like "youtube", but we're willing to try our best to contribute to the creative industry as what we've done in the past twenty years. 
全新自製短片圖庫推出，一如過往，我們不斷推陳出新．不為創做另一網絡神話，但求為創意工業帶來更多選擇，歡迎自由下載作分享參考用 （須保留版權印記)

Blog 網誌

在 心為志, 發言為詩, 原來古人心聲所至, 自然成詩, 即所謂出於天籟是也, ..... 不平則鳴, 文窮後工, 千古不易之理. 雖然網上之言, 難免有遊戲虛假嘻笑怒罵成份, 惟有關大是大非者, 本網誌眾博客, 皆深明何謂大節不逾矩之理,既有所為亦有所不為.....
Our blog has proved to be an effective platform for our members to air their views and even grievances. Click the following link to see how they feel and thnk. 

UM Blogger 網誌編輯組

Comming Soon 

In addition to the above sites, we're going to build a lot more sites catering for people of different interest free of charge.

Customer Support  顧客支援

Knowledge itself is power. - Sir Francis Bacon, of heresies

ANNEX 5: RESOLUTION OF IMAGE 圖像解釋度簡介: Index 5.1 RESOLUTION OF DIGITAL IMAGE: 5.2 RESOLUTION OF INPUT DEVICES: 5.2.1 RESOLUTION OF SCANNER:  5.2.2 RESOLUTION OF DIGITAL CAMERA:  5.3. RESOLUTION OF OUTPUT DEVICES: 5.3.1 RESOLUTION OF MONITOR:  5.3.2 RESOLUTION OF PRINTER:  5.3.3 RESOLUTION OF IMAGE SETTER: 5.3.3.1 Representation of half-tone:  5.3.3.2 Mixture of Color and Screen Angle:  5.3.3.3 Quality of Printing and Screen Repetition:  5.4 RELATION BETWEEN THE RESOLUTION OF IMAGE AND OUTPUT DEVICES : 5.5 RELATION BETWEEN THE SIZE OF IMAGE AND SCALE OF OUTPUT: 5.1 RESOLUTION OF DIGITAL IMAGE: The resolution of a digital image is defined in terms of pixel per inch (ppi). Pixel is the basic element of a digital image which is square in shape and uniform in color. The quality of an image is positively related to the number of square pixels per inch. When talking about the resolution of a digital image, either a digital photo or an image generated by software, only the original pixel density at 1 to 1 scale is significant. It doest not make too much sense to enhance the resolution using else software in anyway. The following diagram shows  the square pixels of a digital foto under microscope . 5.2 RESOLUTION OF INPUT DEVICES 輸入器材精度: 5.2.1 RESOLUTION OF SCANNER 素描器精度: Both the flatbed scanner and drum scanner scan image pixel by pixel and the resolution is limited by hardware architecture , i.e. the density of censor of CCD, CMOS or diameter of laser beam. The quality of images reproduced by drum scanners which use laser beam in the process of scanning is the best among all. 5.2.2 RESOLUTION OF DIGITAL CAMERA 數碼相機精度: Digital camera use CCD or CMOS as the light censing unit. The image size is determined by the number of pixels correponding to the total number of light sensitive unit on the CCD or CMOS. Once the photo is taken, the resolution of image is also determined 5.3. RESOLUTION OF OUTPUT DEVICES 輸出器材精度: 5.3.1 RESOLUTION OF MONITOR 顯示器精度: Limited by the hardware architecture, the default resolution of CRT monitor or LCD monitor is only 72dpi or 96dpi. As it is lower than most of the printers or image setters in use, images shown up on monitor in “actual size” cannot be printed at 1:1 scale without any sacrifice of quality. 5.3.2 RESOLUTION OF PRINTER 打印機精度: The resolution of printer is defined in terms of dpi (dot per inch) Printers reproduce a pixel with a collection of dots of color ink. For instance, based on the algorithm of postscript language or other printer control language, a 16 x 16 matrix of ink dot pattern is used to represent a 8 bit channel of color. Therefore, for the best result, the printer resolution in terms of dpi must be higher than the image resolution expressed in terms of ppi (pixel per inch). Please refer to 5.4 for details. 5.3.3 RESOLUTION OF IMAGE SETTER 分色片輸出機精度: 5.3.3.1 Representation of half-tone 灰階顯示: Image-setters work in similar way as inkjet printers except it use laser beam instead of ink to produce pattern of dots on film. With a 16 x 16 matrix of dot pattern, 256 grade scale is simulated. 5.3.3.2 Mixture of Color and Screen Angle 混色及網角:  In multicolor printing, each channel of color of a pixel is represented by a 16 x 16 matrix of dots and a combination of different color dots will reproduce a mixture of color visually under naked eyes. To ensure all the dots are positioned correctly, the matrix of dots must be arrnage in certain angle, i.e. screen angle. For CMYK offset printing, If not otherwise specified, the screen angle for the 4 process colors are 105, 75, 90 and 45 respectively, with emulsion of film facing downward. Refer to "Customer Support 3" for more information 5.3.3.3 Quality of Printing and Screen Repetition 打印素質與網線密度:  Image-setters of higher resolution can produce more lines of dot matrix in one inch. Screen repetition (or screen ruling) means the number of dot matrix lines per inch. Usually, for high quality print job, 175 lpi or even 200 lpi is expected. However, some offset printer can only print 133 lpi or 100 lpi. If not otherwise specified, 175lpi is assumed to be the screen repetition for high quality CMYK offset print job and 133lpi for mono/multi color stationery printing. 5.4 RELATION BETWEEN THE RESOLUTION OF IMAGE AND OUTPUT DEVICES各 類須輸出器材之圖像精度需求 : Quality 質素 Resolution of Output Devices 輸出器材精度(解析度) dpi (dot per inch) Output Resolution/Screen Repetition 輸出精度(解析度) lpi (line per inch) Minimum Resolution of Image  輸入圖像精度(解析度)最低要求 ppi (pixel per inch) lower  低 ^ | medium  中 | v higher 高  370 dpi outdoors vinyle banner 50 ppi 600 dpi laser printer or inkjet printer 72 ppi (75 ppi) 720 dpi inkjet printer 96 ppi (90 ppi) 1200 dpi laser printer or inkjet printer 150 ppi (150 ppi) 1440 dpi inkjet printer 175 ppi (180 ppi) 2540 dpi image-setter 分色軟片輸出機 150 lpi; 175 lpi 300 ppi (317.5 ppi) 2880 dpi inkjet printer  350 ppi (360 ppi) 3600 dpi image-setter 分色軟片輸出機 200 lpi 350 ppi (450 ppi) The following diagram illustration the effect of different output resolution (screen repetition or lpi) under magnifier 5.5 RELATION BETWEEN THE SIZE OF IMAGE AND SCALE OF OUTPUT 數碼圖像輸出大小與輸出器材之關係:         The following are the scale of output that a digital imae of various resolution can reproduce. Note that the higher the resolution of the output device, the smaller the output image it will be. The size suggested below is adjusted to fit the conventional media size; they are somewhat different to the result obtained by theoetical calculation. Quality IMAGE SIZE (pixel) Vinyle Banner (370dpi) 600/720dpi Printer 1200/1440dpi Printer Bromide Photo Paper / Lambda (200-300ppi) Image Setter (2540dpi or up) lower 低 ^ | medium 中 | v high 高  640x480 (300k) --------------- 3x5” 2.5x3” 2R 1.25x1.5” 800x600 (480k) 6x8” 4x6” 3x5” 3R 1.5x2.5” 1024x768 (800k) 8x10” 6x8” 4x6” 4R 2.5x3.5” 1280x960 (1.3mp) 13x18” 8x10” 6x8” 5R 3x4” 2048x1536 (3.1mp) 21x28” 12x18” 10x12” 8R 5x7” 2592x1944 (5mp) 27x36” 16x20” 12x18” 10R 6x8” 3264x2176 (7.1mp) 30x72” 18x24” 14x20” 18R 8x12” 3264x2448 (8mp) 36x72” 20x24” 16x20” 18R 10x12” 9mp-10mp 40"x56" 20"x28" 18"x24" 16"x20" 11" x 14" 12mp 44"x 60" 24" x 32" 20"x28" 18" x24" 12"x16" 4992x3238 (16mp) 48x72” 28x40” 22x30” 20"x28" 12x17” Back to Customer Support Index  回到顧客支援目錄

What's New? 最新情報

Our Committment to Creativity 我們對創新的理念

For more than two decades,  we've been working hard to achieve the seamless fusion of  old with new, east with west  and art with science. Neither a clumsy mixture nor  a simple crossover can satisfy us.  We've never thought that we 've really made it.  Yet we've tried our best to approach it without regret.

In this approximately 36sec promotion  trailer in  mpg-1 file of 4.3MB,  we not only show our committment to creative industry (Quicktime needed)., but also demonstrate a low cost production of mutimedia ad on the internet is simple and possible. More samples are available. Just click and check. 

在20年的歲月裡，我們曾努力不 懈地嘗試，揉合現代和傳統、東方和西方、藝 術和科技，我們不敢奢言成功、或滿足於簡單 的混合、以至笨拙的結合，但卻無悔追 尋這36秒的動畫, 表達我們對創作的理念, 也展示低成本創作之可能. 網頁內有更多我們的創作樣本.

Locate Us  到訪我們

Special Notices  特別通告