Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tham khảo tài liệu 'hướng dẫn sử dụng coreldraw x5 - part 53', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 504 CorelDRAW X5 The Official Guide TIP X-Rite has emerged as the color industry s heavy-hitter after adding Pantone the color-matching people and Gretag Macbeth proofing systems monitor calibration hardware software to Munsell and other acquisitions in recent years. If you have any questions about printing packaging paints plastics or just color in general Xrite.com is the place to visit. Their website contains not only catalog areas but also many areas with seminar listings and free downloads of collateral material all about color. LAB Color LAB is both a color space and a color model. CorelDRAW offers LAB as a color model however LAB the color space is device independent and therefore it can be used to describe colors you see in the drawing window on a physical plastic bottle of soda and even on a basketball. Almost 100 years ago this was before PCs the Commission Internationale de l Eclairage the CIE the International Commission on Illumination was established as a worldwide organ for standardizing and exchanging color specifications. They are responsible for creating the LAB color model. It successfully replicates the spectrum of human vision and this is why there is a disproportionately large area of green in LAB color space. This is because the human eye responds to this region of the visible spectrum more strongly than to other hues. LAB is modeled after one channel of Luminance one color channel named A that runs from magenta to green and another channel named B from blue to yellow. When you use LAB to describe a color you re theoretically assured color consistency. LAB the color space is frequently used by software engineers as a conversion space. When you want for example to convert an RGB bitmap to CMYK the LAB color space is larger than both and as a consequence colors are not driven out of gamut when the pixels in such a bitmap are reassigned new component values. YIQ The YIQ color model is similar in its components to LAB color however its purpose is
