EFFECTIVE SVD-YCBCR COLOR IMAGE WATERMARKING

I. TỔNG QUAN VỀ WATERMARKING
 Watermarking là một trong những kỹ thuật giấu dữ liệu hiện đại.  Nó được định nghĩa như là quá trình chèn thông tin vào dữ
liệu đa phương tiện nhưng bảo đảm không cảm thụ được, nghĩa là chỉ làm thay đổi nhỏ dữ liệu gốc.

Chọn Image > Adjustments > Desaturate hoặc nhấn phím tắt Shift + Ctrl + U Win hoặc Shift + Command + U Mac: TRANG 3 Tiếp theo, các bạn chọn Image > Adjustments > Color Balance: TRANG 4 T[r]

In order to extract interest objects, we propose the image segmentation method on the base of low-level visual features including color and texture of image.. The features are extrac[r]

If you zoom in to an image until you can distinguish the pixels, you’ll probably notice a color fringe around some of them, especially highlights. This is called chromatic aberration, and it’s caused either by the inability of the camera lens to focus all the colors onto the sensor[r]

4. Processing of Music Symbols
At this point, we have a white and black image of each staff without the staff lines, the music symbols are present together with artifacts due to parts of the staff lines not deleted, spots, and so forth. The aim of the procedure described in this section is to[r]

Bài báo nghiên cứu thuật toán watermarking dựa trên sự kết hợp phép biến đổi Discrete Cosine Transform (DCT) và Discrete Wavelet Transform (DWT). Sử dụng phép biến đổi wavelets lần thứ nhất trên ảnh phủ (cover image) thu được các băng con LL, HL, LH và HH (L:Low và H: High).

¾ Chuyển bình đồ về dạng số IMAGE | IMAGE PROCESSING | CHANGE COLOR DEPTH CHỌN Y, CHỌN B BƯỚC 3: THIẾT LẬP CÁC THÔNG SỐ Tạo 2 lớp dongmucchinh Blue và dongmucphu Red Đặt các tuỳ chọn cho[r]

TRANG 2 TRANG 3 Figure 2.53 The image from Figure 2.52 in the Color Range dialog after clicking multiple areas within the models blouse.. Figure 2.52 The original image.[r]

Chú ý: B n không th đ nh kích th c c a Palette Info, Color, Character và Paragraph Palette trong PTS ho c Optimize, Info, Color, Layer Options, Character, Paragraph, Slice, và Image Map Palette trong IR.
- thu nh m t nhóm các Palette thành thanh tiêu đ , Alt-Click vào[r]

Restoration in Action
Learning how to fi x damaged areas in photos is not a step-by-step process. Rather, it is learning how to identify problems and make strategic decisions about which techniques to employ to fi x the image. Practice is the best path to becoming a skillful retoucher.[r]

238
Correcting and Retouching
After you’ve corrected the light and color of your photo in general, it’s time to move on to the on- the-spot corrections. You can remove flaws or red-eye in your photo, use the adjustment brush to make color or lighting corrections to selected area[r]

general quantized to the same transmit signal (the same code word in the code book of all code words). This is no longer true when distortion compensation is applied.
In summary, dirty-paper codes and distortion compensation are two tools that serve the same purpose: adapting the transmit signal t[r]

output digital offers an economically viable alternative (see Digital Photography: Essential Skills).
Commercial photography reproduced in magazines has traditionally been produced using positive or reversal (transparency) film because it is a one-step process to achieve a positive image.[r]

Ví dụ tôi chọn hai hình như thế này Một hình là cảnh bãi biển và hình kia là cảnh hoàng hôn Bây giờ tôi chọn Image>Adjustments>Match Color Hộp thoại Match Color sẽ hiện lên, tôi sẽ chỉnh[r]

for troubleshooting CSS, 554 Boot Camp application, 564 border attribute (table element), 455 border-bottom-color property, 653 border-bottom-left-radius property, 183 border-bottom property, 138, 146, 370, 653 border-bottom-right-radius property, 183 border-bottom-style property, 653 border-[r]

visuals, such as color, image and design provided by a mobile shopping platform, can stimulate consumer’s arousal.[r]

For 99% of my eye repairs, I now use QuickMasks, which are simple to use and feature feather- ing equivalent to half the width of the brush. This results in seamless selective adjustments. To set up for quick masking, double-click the bottom icon in the toolbar . This brings up the Quick Mask Opti[r]

All these variables mean you need to spend some time correcting both the color and the lighting of your images. Not to worry: You’ve got an arsenal of tools at your dis- posal in Photoshop and its trusty sidekick, Camera Raw. In this chapter, you’ll learn how to use all the automatic fixer-[r]

2. Press B to grab the Brush tool and set your foreground color chip to black; then hide part of the Adjustment layer by painting atop your image.
Remember the layer mask rhyme “black conceals and white reveals?” When you’re about to work with a mask, take a moment to think about w[r]

Due to differences between the way browsers calculate 16-bit color and the way image editors like Adobe Photoshop do it, in the 16-bit color space, browsers are off differently from the way GIF images are off. In other words, the background color of the image abs[r]