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"Bit-mapped image" nghĩa là gì?
15 Jun, 2023
"Bit-mapped image" -> nghĩa là hình ảnh được máy tính lưu trong bộ nhớ dưới dạng một loạt các chấm màu trong một lưới, mỗi chấm được biểu thị bằng một hoặc nhiều bit.
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Bit mapped and Vector Graphics Data 5 True Colour – when a bit mapped image uses 24 bits (3 bytes) for each pixel (điểm ảnh) (approx 16 million colours). This is reckoned to be the number of colours perceived (đón nhận) by the human eye. All displayed colours are made up of the three primary colours – Red, Green and Blue (RGB).
I think noise and sharpness (độ sắc nét) are fairly similar between the two, but there is a consistent color shift to Topaz DeNoise AI when using the raw file. There is a VERY slight color shift with DxO, I'm not sure you can see it, but it has significantly (đáng kể) truer color than Topaz. I think the advice to use DeNoise AI on a completed bit-mapped image still holds.
The first example shows a bit-mapped image containing dark text on a light background, which is good contrast for viewing in almost any circumstance. The second example shows an image with poor choices for foreground (cận cảnh) and background color. Some people or some devices might not easily interpret (hiểu) the content. The reason the priority is higher for color choices in an image is that the user has no control over the rendering of the color of an image.
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