Lines Matching refs:quantization
78 and color quantization. The application indirectly selects use of this code
81 library automatically invokes color quantization.
237 quantization to deliver colormapped output.) If you request colormapped
623 quantization, jpeg_start_decompress() will do everything needed before data
653 relevant parameters (scaling, output color space, and quantization flag).
902 Constructs JPEG quantization tables appropriate for the indicated
906 in future IJG releases as more is learned about DCT quantization.
907 If the force_baseline parameter is TRUE, then the quantization table
935 Set default quantization tables with linear q_scale_factor[] values
941 Allows an arbitrary quantization table to be created. which_tbl
1068 Pointers to coefficient quantization tables, one per table slot,
1071 is general enough to define any quantization table. The other
1077 Linear quantization scaling factors (0-100, default 100)
1992 quantization for display passes made while the image is arriving, followed by
1993 a final display pass using two-pass quantization for highest quality. This
2152 * jpeg_start_output() performs input only if you request 2-pass quantization
2178 of course this has no impact if not using color quantization. Typically
2193 * Color quantization mode can be changed under the rules described below.
2196 quantization method is used.
2198 When generating color-quantized output, changing quantization method is a
2200 The library allows you to change among its three quantization methods:
2201 1. Single-pass quantization to a fixed color cube.
2203 2. Single-pass quantization to an application-supplied colormap.
2206 3. Two-pass quantization to a colormap chosen specifically for the image.
2224 enable flags for any other quantization methods you plan to change to later.
2227 can change to any enabled quantization method by setting two_pass_quantize
2249 When using two-pass quantization, jpeg_start_output() makes a pass over the
2257 conditions. The combination of 2-pass quantization and a not-yet-fully-read
2308 A JPEG file normally contains several hundred bytes worth of quantization
2335 decompression objects, a quantization or Huffman table will be retained for
2341 quantization and Huffman table struct contains a boolean field "sent_table",
2363 containing only SOI, DQT and/or DHT markers, and EOI. All the quantization
2395 for an example of copying quantization tables.
2402 to load a fixed quantization table into table slot "n":
2408 /* Qtable[] is desired quantization table, in natural array order */
2428 contain a quantization table definition, your master table would get
2732 you cannot ask for rescaling or color quantization, for instance. More
2829 When writing raw DCT coefficients, it is crucial that the JPEG quantization
2940 Some operating modes (eg, two-pass color quantization) require full-image
2984 4. To perform 2-pass color quantization, the decompressor also needs a
2991 quantization pixel buffer. The "fixed-size" data will be somewhat smaller
3002 for color quantization. Also, it needs a full-image DCT coefficient buffer
3029 You may also want to supply your own DCT quantization tables; the existing