STRUCT IPU3_UAPI_BNR_STATIC_CONFIG_THR_COEFFS_CONFIG(9)

💅 struct ipu3_uapi_bnr_static_config_thr_coeffs_config(9) — Kernel API Manual ✨

okay bestie, so this is a page from the Kernel API Manual, and today's main character is struct ipu3_uapi_bnr_static_config_thr_coeffs_config. yes the name is a whole mouthful, we're gonna get through it together 🫶

🌸 NAME 🌸

struct ipu3_uapi_bnr_static_config_thr_coeffs_config — the noise model coefficients that control the noise threshold. it's giving "math but make it fashion" 💅

✨ SYNOPSIS ✨

struct ipu3_uapi_bnr_static_config_thr_coeffs_config {
    __u32 cf:13;
    __u32 reserved0:3;
    __u32 cg:5;
    __u32 ci:5;
    __u32 reserved1:1;
    __u32 r_nf:5;
 };

look at those bitfields, so tiny, so iconic 🎀

🦋 Members 🦋

cf — free coefficient for the threshold calculation, range [0, 8191], default 0. literally just vibes and math 🔥
reserved0 — reserved. nothing to see here, no cap 🙈
cg — gain coefficient for the threshold calculation, [0, 31], default 8. slay ✨
ci — intensity coefficient for the threshold calculation. range [0, 0x1f], default 6. the format is u3.2: the 3 most significant bits represent the whole number, and the 2 least significant bits represent the fractional part, with each count representing 0.25. e.g. 6 in binary format is 00110, and that translates to 1.5. iykyk, the bit math is lowkey gorgeous 😭💜
reserved1 — reserved. again. just sitting there. main character energy of a background extra 💀
r_nf — normalization shift value for the r^2 calculation, range [12, 20], where r is a radius of pixel [row, col] from the centor of sensor (yes "centor" is what the page says, don't come for me 🫶). default 14.

👑 Description 👑

the threshold is used to distinguish between noise and details. that's the whole job. noise detection but make it chic 💅

🌈 SEE ALSO 🌈

Kernel file ./drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
struct ipu3_uapi_grid_config(9), struct ipu3_uapi_awb_set_item(9), struct ipu3_uapi_awb_raw_buffer(9), struct ipu3_uapi_awb_config_s(9), struct ipu3_uapi_awb_config(9), struct ipu3_uapi_ae_raw_buffer(9), struct ipu3_uapi_ae_raw_buffer_aligned(9), struct ipu3_uapi_ae_grid_config(9), struct ipu3_uapi_ae_weight_elem(9), struct ipu3_uapi_ae_ccm(9), struct ipu3_uapi_ae_config(9), struct ipu3_uapi_af_filter_config(9), struct ipu3_uapi_af_raw_buffer(9), struct ipu3_uapi_af_config_s(9), struct ipu3_uapi_awb_fr_raw_buffer(9), struct ipu3_uapi_awb_fr_config_s(9), struct ipu3_uapi_4a_config(9), struct ipu3_uapi_bubble_info(9), struct ipu3_uapi_ff_status(9), struct ipu3_uapi_stats_3a(9), struct ipu3_uapi_bnr_static_config_wb_gains_config(9), struct ipu3_uapi_bnr_static_config_wb_gains_thr_config(9), struct ipu3_uapi_bnr_static_config_thr_ctrl_shd_config(9), struct ipu3_uapi_bnr_static_config_opt_center_config(9), struct ipu3_uapi_bnr_static_config_lut_config(9), struct ipu3_uapi_bnr_static_config_bp_ctrl_config(9), struct ipu3_uapi_bnr_static_config_dn_detect_ctrl_config(9), struct ipu3_uapi_bnr_static_config_opt_center_sqr_config(9), struct ipu3_uapi_bnr_static_config(9), struct ipu3_uapi_bnr_static_config_green_disparity(9), struct ipu3_uapi_dm_config(9), struct ipu3_uapi_ccm_mat_config(9), struct ipu3_uapi_gamma_corr_ctrl(9), struct ipu3_uapi_gamma_corr_lut(9), struct ipu3_uapi_gamma_config(9), struct ipu3_uapi_csc_mat_config(9), struct ipu3_uapi_cds_params(9), struct ipu3_uapi_shd_grid_config(9), struct ipu3_uapi_shd_general_config(9), struct ipu3_uapi_shd_black_level_config(9), struct ipu3_uapi_shd_config_static(9), struct ipu3_uapi_shd_lut(9), struct ipu3_uapi_shd_config(9), struct ipu3_uapi_iefd_cux2(9), struct ipu3_uapi_iefd_cux6_ed(9), struct ipu3_uapi_iefd_cux2_1(9), struct ipu3_uapi_iefd_cux4(9), struct ipu3_uapi_iefd_cux6_rad(9), struct ipu3_uapi_yuvp1_iefd_cfg_units(9), struct ipu3_uapi_yuvp1_iefd_config_s(9), struct ipu3_uapi_yuvp1_iefd_control(9), struct ipu3_uapi_sharp_cfg(9), struct ipu3_uapi_far_w(9), struct ipu3_uapi_unsharp_cfg(9), struct ipu3_uapi_yuvp1_iefd_shrp_cfg(9), struct ipu3_uapi_unsharp_coef0(9), struct ipu3_uapi_unsharp_coef1(9), struct ipu3_uapi_yuvp1_iefd_unshrp_cfg(9), struct ipu3_uapi_radial_reset_xy(9), struct ipu3_uapi_radial_reset_x2(9), struct ipu3_uapi_radial_reset_y2(9), struct ipu3_uapi_radial_cfg(9), struct ipu3_uapi_rad_far_w(9), struct ipu3_uapi_cu_cfg0(9), struct ipu3_uapi_cu_cfg1(9), struct ipu3_uapi_yuvp1_iefd_rad_cfg(9), struct ipu3_uapi_vss_lut_x(9), struct ipu3_uapi_vss_lut_y(9), struct ipu3_uapi_yuvp1_iefd_vssnlm_cfg(9), struct ipu3_uapi_yuvp1_iefd_config(9), struct ipu3_uapi_yuvp1_yds_config(9), struct ipu3_uapi_yuvp1_chnr_enable_config(9), struct ipu3_uapi_yuvp1_chnr_coring_config(9), struct ipu3_uapi_yuvp1_chnr_sense_gain_config(9), struct ipu3_uapi_yuvp1_chnr_iir_fir_config(9), struct ipu3_uapi_yuvp1_chnr_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_lpf_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_sense_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_gain_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_clip_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_frng_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_diag_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_fc_coring_config(9), struct ipu3_uapi_yuvp1_y_ee_nr_config(9), struct ipu3_uapi_yuvp2_tcc_gen_control_static_config(9), struct ipu3_uapi_yuvp2_tcc_macc_elem_static_config(9), struct ipu3_uapi_yuvp2_tcc_macc_table_static_config(9), struct ipu3_uapi_yuvp2_tcc_inv_y_lut_static_config(9), struct ipu3_uapi_yuvp2_tcc_gain_pcwl_lut_static_config(9), struct ipu3_uapi_yuvp2_tcc_r_sqr_lut_static_config(9), struct ipu3_uapi_yuvp2_tcc_static_config(9), struct ipu3_uapi_anr_transform_config(9), struct ipu3_uapi_anr_stitch_pyramid(9), struct ipu3_uapi_anr_stitch_config(9), struct ipu3_uapi_anr_config(9), struct ipu3_uapi_acc_param(9), struct ipu3_uapi_isp_lin_vmem_params(9), struct ipu3_uapi_isp_tnr3_vmem_params(9), struct ipu3_uapi_isp_tnr3_params(9), struct ipu3_uapi_isp_xnr3_vmem_params(9), struct ipu3_uapi_xnr3_alpha_params(9), struct ipu3_uapi_xnr3_coring_params(9), struct ipu3_uapi_xnr3_blending_params(9), struct ipu3_uapi_isp_xnr3_params(9), struct ipu3_uapi_obgrid_param(9), struct ipu3_uapi_flags(9), struct ipu3_uapi_params(9)

okay that's the whole page bestie, you ate that 🍓

source fam: ./drivers/staging/media/ipu3/i... — dated October 2026 — and we're closing out on struct ipu3_...oeffs_config(9) 💖 periodt ✨

📦 where this page comes from

nixpkgs unstable: linux-manual 7.3.1
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on 2026-11-04: a language model's rewrite of the original, under its terms