sustaining_gazes/matlab_version/models/Load_Patch_Experts.m

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2016-04-28 19:40:36 +00:00
function [patches] = Load_Patch_Experts( col_patch_dir, col_patch_file, depth_patch_dir, depth_patch_file, clmParams)
%LOAD_PATCH_EXPERTS Summary of this function goes here
% Detailed explanation goes here
colourPatchFiles = dir([col_patch_dir col_patch_file]);
% load all of the pathes
for i=1:numel(colourPatchFiles)
load([col_patch_dir, colourPatchFiles(i).name]);
% determine patch type (slightly hacky but SVR patch experts don't
% CCNF ratio variable)
if(isfield(normalisationOptions, 'ccnf_ratio'))
patch = struct;
patch.centers = centers;
patch.trainingScale = trainingScale;
patch.visibilities = visiIndex;
patch.patch_experts = patch_experts.patch_experts;
patch.correlations = patch_experts.correlations;
patch.rms_errors = patch_experts.rms_errors;
patch.modalities = patch_experts.types;
patch.multi_modal_types = patch_experts.types;
patch.type = 'CCNF';
% Knowing what normalisation was performed during training is
% important for fitting
patch.normalisationOptionsCol = normalisationOptions;
% As the similarity inverses will depend on the window size
% and alphas and betas, but not actual data, precalculate
% them here
% create the similarity inverses
window_sizes = unique(clmParams.window_size(:));
for s=1:size(window_sizes,1)
for view=1:size(patch.patch_experts,1)
for lmk=1:size(patch.patch_experts,2)
if(visiIndex(view, lmk))
num_modalities = size(patch.patch_experts{view,lmk}.thetas,3);
num_hls = size(patch.patch_experts{view,lmk}.thetas,1);
patchSize = sqrt(size( patch.patch_experts{view,lmk}.thetas,2)-1);
patchSize = [patchSize, patchSize];
% normalisation so that patch expert can be
% applied using convolution
w = cell(num_hls, num_modalities);
norm_w = cell(num_hls, num_modalities);
for hl=1:num_hls
for p=1:num_modalities
w_c = patch.patch_experts{view,lmk}.thetas(hl, 2:end, p);
norm_w_c = norm(w_c);
w_c = w_c/norm(w_c);
w_c = reshape(w_c, patchSize);
w{hl,p} = w_c;
norm_w{hl,p} = norm_w_c;
end
end
patch.patch_experts{view,lmk}.w = w;
patch.patch_experts{view,lmk}.norm_w = norm_w;
similarities = {};
response_side_length = window_sizes(s) - 11 + 1;
for st=1:size(patch.patch_experts{view,lmk}.similarity_types, 1)
type_sim = patch.patch_experts{view,lmk}.similarity_types{st};
neighFn = @(x) similarity_neighbor_grid(x, response_side_length(1), type_sim);
similarities = [similarities; {neighFn}];
end
sparsities = {};
for st=1:size(patch.patch_experts{view,lmk}.sparsity_types, 1)
spFn = @(x) sparsity_grid(x, response_side_length(1), patch.patch_experts{view,lmk}.sparsity_types(st,1), patch.patch_experts{view,lmk}.sparsity_types(st,2));
sparsities = [sparsities; {spFn}];
end
region_length = response_side_length^2;
[ ~, ~, PrecalcQ2sFlat, ~ ] = CalculateSimilarities_sparsity( 1, {zeros(region_length,1)}, similarities, sparsities);
PrecalcQ2flat = PrecalcQ2sFlat{1};
SigmaInv = CalcSigmaCCNFflat(patch.patch_experts{view,lmk}.alphas, patch.patch_experts{view,lmk}.betas, region_length, PrecalcQ2flat, eye(region_length), zeros(region_length));
if(s == 1)
patch.patch_experts{view,lmk}.Sigma = {inv(SigmaInv)};
else
patch.patch_experts{view,lmk}.Sigma = cat(1, patch.patch_experts{view,lmk}.Sigma, {inv(SigmaInv)});
end
end
end
end
end
if(i==1)
patches = patch;
else
patches = [patches; patch];
end
else
% creating the struct
patch = struct;
patch.centers = centers;
patch.trainingScale = trainingScale;
patch.visibilities = visiIndex;
patch.type = 'SVR';
% if the normalisation options present in the loaded patch use
% them, if not we use default values
if(exist('normalisationOptions', 'var'))
patch.normalisationOptionsCol = normalisationOptions;
else
patch.normalisationOptionsCol = normalisationColour;
end
% default for depth uses normalised-cross-corr per each sample,
% rather than in a broad area
if(~isfield(patch.normalisationOptionsCol, 'useZeroMeanPerPatch'))
patch.normalisationOptionsCol.zscore = 0;
patch.normalisationOptionsCol.useNormalisedCrossCorr = 1;
patch.normalisationOptionsCol.useZeroMeanPerPatch = 1;
end
% Multi-modal section
patch.patch_experts = cell(size(visiIndex,1), size(visiIndex,2));
for view=1:size(visiIndex,1)
for landmark=1:size(visiIndex,2)
patch.patch_experts{view, landmark} = struct;
multi_modal_types = patch_experts.types;
for p=1:numel(patch_experts.types)
patch.patch_experts{view, landmark}(p).type = patch_experts.types(p);
patch.patch_experts{view, landmark}(p).correlations = patch_experts.correlations(p);
patch.patch_experts{view, landmark}(p).rms_errors = patch_experts.rms_errors(p);
patch.patch_experts{view,landmark}(p).scaling = patch_experts.patch_experts{p}(view, landmark, 1);
patch.patch_experts{view,landmark}(p).bias = patch_experts.patch_experts{p}(view, landmark, 2);
patch.patch_experts{view,landmark}(p).w = reshape(patch_experts.patch_experts{p}(view, landmark, 3:end),11,11);
end
end
end
patch.multi_modal_types = multi_modal_types;
if(i==1)
patches = patch;
else
patches = [patches; patch];
end
end
clear 'normalisationOptions, centers, trainingScale, visiIndex, correlations, rmsErrors';
end
if(~isempty(depth_patch_file))
depthPatchFiles = dir([depth_patch_dir depth_patch_file]);
% load all of the depth patches
for i=1:numel(depthPatchFiles)
load([depth_patch_dir, depthPatchFiles(i).name]);
% assuming that same view seen in depth and intensity
% if the normalisation options present in the loaded patch use
% them, if not we use default values
if(exist('normalisationOptions', 'var'))
patches(i).normalisationOptionsDepth = normalisationOptions;
else
patches(i).normalisationOptionsDepth = normalisationDepth;
end
% Multi-modal section
patches(i).patch_experts_depth = cell(size(visiIndex,1), size(visiIndex,2));
for view=1:size(visiIndex,1)
for landmark=1:size(visiIndex,2)
patches(i).patch_experts_depth{view, landmark} = struct;
if(exist('patch_m', 'var'))
multi_modal_types = patch_m.types;
for p=1:numel(patch_m.types)
patches(i).patch_experts_depth{view, landmark}(p).type = patch_m.types(p);
patches(i).patch_experts_depth{view, landmark}(p).correlations = patch_m.correlations(p);
patches(i).patch_experts_depth{view, landmark}(p).rms_errors = patch_m.rms_errors(p);
patches(i).patch_experts_depth{view,landmark}(p).scaling = patch_m.patch_experts{p}(view, landmark, 1);
patches(i).patch_experts_depth{view,landmark}(p).bias = patch_m.patch_experts{p}(view, landmark, 2);
patches(i).patch_experts_depth{view,landmark}(p).w = reshape(patch_m.patch_experts{p}(view, landmark, 3:end),11,11);
end
else
multi_modal_types = {'reg'};
% for backward compatibility
patches(i).patch_experts_depth{view, landmark}(1).type = {'reg'};
patches(i).patch_experts_depth{view, landmark}(1).correlations = correlations;
patches(i).patch_experts_depth{view, landmark}(1).rms_errors = rmsErrors;
patches(i).patch_experts_depth{view,landmark}(1).scaling = patchExperts(view, landmark, 1);
patches(i).patch_experts_depth{view,landmark}(1).bias = patchExperts(view, landmark, 2);
patches(i).patch_experts_depth{view,landmark}(1).w = reshape(patchExperts(view, landmark, 3:end), 11,11);
end
end
end
clear 'normalisationOptions, centers, trainingScale, visiIndex, correlations, rmsErrors';
end
end
end