Định Dạng Đồ Họa Hỗ Trợ (Supported Graphics Formats)¶
Định Dạng Hình Ảnh (Image Formats)¶
This is the list of image file formats supported internally by Blender:
Định Dạng/Hình Thức (Format) |
Độ Sâu của Kênh |
Độ Đục (Alpha) |
Phần Mở Rộng/Định Dạng (Extensions) |
||
---|---|---|---|---|---|
BMP |
8bit |
✓ |
✗ |
✓ |
|
Iris/Tròng Mắt |
8, 16bit |
✓ |
✗ |
✗ |
|
PNG |
8, 16bit |
✓ |
✓ |
✓ |
|
JPEG |
8bit |
✗ |
✓ |
✓ |
|
JPEG 2000 |
8, 12, 16bit |
✓ |
✗ |
✗ |
|
Targa |
8bit |
✓ |
✗ |
✗ |
|
8, 10, 12, 16bit |
✓ |
✗ |
✗ |
|
|
float 16, 32bit |
✓ |
✓ |
✓ |
|
|
Radiance HDR (HDR Bức Xạ) |
float |
✓ |
✗ |
✗ |
|
TIFF |
8, 16bit |
✓ |
✗ |
✓ |
|
WebP |
8bit |
✓ |
✓ |
✗ |
|
Gợi ý
If you are not interested in technical details, a good rule of thumb for selecting output formats for your project is:
- Sử dụng định dạng OpenEXR (Use OpenEXR)
if you intend to do compositing or color grading on these images.
- Sử dụng định dạng PNG (Use PNG)
if you intend on-screen output or encoding into multiple video formats.
- Sử dụng định dạng JPEG (Use JPEG)
for on-screen output where file size is a concern and quality loss is acceptable.
Toàn bộ những cái định dạng này đều hỗ trợ nén dữ liệu, một chức năng có thể là khá quan trọng đối với việc kết xuất ra hoạt họa.
Gợi ý
Bit depths for image formats represent the following numbers of tonal levels per channel:
- 8:
256 tầng bậc
- 10:
1024 tầng bậc
- 12:
4096 tầng bậc
- 16:
65536 mức độ/số tầng
Mở Hình Ảnh (Opening Images)¶
- Đường Dẫn Tương Đối (Relative Path)
Sets the file path to be relative to the currently opened blend-file.
Xin xem mục Đường Dẫn Tương Đối (Relative Paths).
- Phát Hiện Trình Tự (Detect Sequences)
Automatically looks for image sequences in the selected images (based on the file name). Disable this when you do want to get single images that are part of a sequence. See Mở một Trình Tự hình ảnh (Opening an Image Sequence) for more information.
- Phát Hiện các UDIM (Detect UDIMs)
Automatically looks for UDIM tiles in the directory of the selected image; if matches are found they are loaded into Blender as UDIMs. This works by detecting if the filename has a
.xxxx
(four digit number) before the file extension.
Mở một Trình Tự hình ảnh (Opening an Image Sequence)¶
To load image sequence in any of the supported image file formats,
the filename of the images must contain a digit to indicate the frame order
(e.g. *-0001.jpg
, *-0002.jpg
, *-0003.jpg
, etc, of any image format), indicating the frame.
The sequence could be opened by the selection of the images with any of the following methods by the confirmation with the Open Image button or Return.
- Phạm Vi (Range)
Navigate into the directory and LMB click and drag over a range of names to highlight multiple files. You can page down and continue Shift-LMB click-dragging to add more to the selection.
- Hàng Loạt (Batch)
Shift-LMB click selected non-related stills for batch processing; each image will be one frame, in sort order, and can be a mix of file types (
jpg
,png
,exr
, etc.).- Toàn Bộ (All)
Press A to select/deselect all files in the directory.
Lưu các Hình Ảnh (Saving Images)¶
- Định Dạng Tập Tin (File Format)
Choose what format to save the image as.
- Màu Sắc (Color)
The color format to save the image or video to. This setting is used by some formats to optimize how much data is written to the file. Note, RGBA is not available for all image formats, check the list above for details.
- BW:
Saves the image using grayscale colors.
- Red, Green, Blue: Đỏ, Lục, Lam:
Saves red, green and blue channels
- RGBA:
Saves red, green, blue and alpha channels.
- Độ Sâu của Màu (Color Depth)
The exponent value (with base two) for how many colors can be represented within a single color channel. A higher bit depth will allow more possible colors, reducing banding, and increasing precision. Yet a higher bit depth will increase memory usage exponentially.
Note, not all file formats support every color depth configuration. Below is a list of commonly used depths:
- 8-bit:
Phổ biến nhất cho đồ họa trên màn hình và video.
- 10, 12, 16-bit:
Được sử dụng cho một số định dạng, đặc biệt trong nhiếp ảnh và phim kỹ thuật số (chẳng hạn như DPX và JPEG 2000).
- 16-bit Số Thực với Mức Chính Xác Một Nửa (16-bit Half Float):
Since full 32bit float is often more than enough precision, half float can save drive space while still providing a high dynamic range.
- 32-Bit Số Thực (32-bit Float):
Highest quality color depth.
Ghi chú
Internally Blender's image system supports either:
8 bits per channel (4 × 8 bits).
32 bits float per channel (4 × 32 bits) -- using 4 times as much memory.
Images higher than 8 bits per channel will be converted into a float on loading into Blender.
- Nén (Compression)
Used to reduce the size of the image file. How this is done may vary depending on the file format and settings used.
- Chất Lượng (Quality)
Controls the level of lossy compression applied to the image, expressed as a percentage. Lossy compression reduces file size by discarding some image data, which may result in a loss of detail.
0%: Maximum compression, producing the smallest file size but the most noticeable quality loss.
100%: No compression, preserving full image quality at the cost of a larger file size.
- Lưu như Kết Xuất (Save As Render)
Save image with render color management. For display image formats like PNG, apply view and display transform. For intermediate image formats like OpenEXR, use the default render output color space.
- Sao Chép (Copy)
Defines if the data-block will reference the newly created file or the reference will be unchanged, maintaining it with the original one.
- Color Space (Không Gian Màu Sắc)
Để chỉ định không gian màu của tập tin nguồn.
Danh sách các không gian màu phụ thuộc vào Cấu Hình OCIO (OCIO config) đang hoạt động. Các không gian màu được hỗ trợ mặc định được miêu tả chi tiết tại đây: Cấu Hình OpenColorIO Mặc Định (Default OpenColorIO Configuration)
Ghi chú
Note, Cineon, DPX, OpenEXR, and Radiance HDR image types default to being saved in a linear color space.
Chi Tiết về Định Dạng (Format Details)¶
Cineon & DPX¶
Cineon is Kodak's standard for film scanning, 10 bits per channel and logarithmic. DPX has been derived from Cineon as the ANSI/SMPTE industry standard. DPX supports 16-bit colors/channels, linear as well as logarithmic. DPX is currently a widely adopted standard used in the film hardware/software industry.
DPX as well as Cineon only stores and converts the "visible" color range of values between 0.0 and 1.0 (as a result of rendering or composite).
Sử dụng định dạng OpenEXR¶
ILM's OpenEXR has become a software industry standard for HDR image files, especially because of its flexible and expandable structure.
An OpenEXR file can store multiple layers and passes. This means OpenEXR images can be loaded into a Compositor keeping render layers and passes intact.
Tùy Chọn Đầu Ra (Output Options)¶
Available options for OpenEXR render output are:
- Độ Sâu của Màu (Color Depth)
The exponent value (with base two) for how many colors can be represented within a single color channel. A higher bit depth will allow more possible colors, reducing banding, and increasing precision. Yet a higher bit depth will increase memory usage exponentially.
- Float (Half):
Saves images in a custom 16 bits per channel in a floating-point format. This reduces the actual "bit depth" to 10-bit, with a 5-bit power value and 1-bit sign.
- Float (Full):
Saves images using 32 bits per channel in a floating-point format.
- Bộ Hóa Giải Mã (Codec)
The type of compression to encode the EXR-file with.
- Không (None):
Disables all compression for fastest encoding times but creates larger file sizes.
- ZIP:
Lossless compression using Zlib on 16 row image blocks.
- PIZ:
Lossless wavelet compression, effective for noisy/grainy images.
- DWAA (lossy):
JPEG-like lossy compression on 32 row image blocks.
- DWAB (lossy):
JPEG-like lossy compression on 256 row image blocks.
- ZIPS:
Lossless compression using Zlib, each image row compressed separately
- RLE:
Lossless run length encoding compression, works well when image rows have the same values.
- Pxr24 (lossy):
Converts 32-bit floats to 24 bits then uses deflate compression. Pxr24 is lossless for half and 32-bit integer data and slightly lossy for 32-bit float data.
- B44 (lossy):
Lossy compression for 16 bit float images, at fixed 2.3:1 ratio. B44 compresses uniformly regardless of image content.
- B44A (lossy):
Lossy compression for 16 bit float images, at fixed 2.3:1 ratio with further compression on areas of flat color are further compressed, such as alpha channels.
- Quality DWAA (lossy) DWAB (lossy)
Controls the level of lossy compression applied to the image, expressed as a percentage. Lossy compression reduces file size by discarding some image data, which may result in a loss of detail.
0%: Maximum compression, producing the smallest file size but the most noticeable quality loss.
100%: No compression, preserving full image quality at the cost of a larger file size.
- Xem Trước (Preview)
When rendering animations (or single frames via command line), save a JPEG copy of the image, for a quick preview.
HDR Bức Xạ (Radiance HDR)¶
Radiance is a suite of tools for lighting simulation. Since Radiance had the first (and for a long time the only) HDR image format, this format is supported by many other software packages.
Radiance .hdr
files store colors still in 8 bits per component,
but with an additional (shared) 8-bit exponent value, making it 32 bits per pixel.