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Compositor: add new node: Kuwahara filter #107015

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Habib Gahbiche merged 22 commits from zazizizou/blender:com-kuwahara-filter-node into main 2023-06-08 16:14:51 +02:00
Conversation 14 Commits 22 Files Changed 19 +63 -92
3 changed files with 63 additions and 92 deletions
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131
source/blender/compositor/operations/COM_KuwaharaOperation.cc
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@ -55,99 +55,82 @@ int KuwaharaOperation::get_variation()
return variation_;
}
void KuwaharaOperation::update_memory_buffer(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
void KuwaharaOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
MemoryBuffer *image = inputs[0];
const int bwidth = area.xmax - area.xmin;
const int bheight = area.ymax - area.ymin;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const int x = it.x;
const int y = it.y;
it.out[3] = image->get_value(x, y, 3);
for (int y = 0; y < bheight; y++)
{
for (int x = 0; x < bwidth; x++)
{
output->get_value(x, y, 3) = 1;
}
}
for (int ch = 0; ch < 3; ch++)
{
for (int y = 0; y < bheight; y++)
for(int ch = 0; ch < 3; ch++)
{
for (int x = 0; x < bwidth; x++)
float sum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
float var[4] = {0.0f, 0.0f, 0.0f, 0.0f};
int cnt[4] = {0, 0, 0, 0};
for (int dy = -kernel_size_; dy <= kernel_size_; dy++)
{
float sum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
float var[4] = {0.0f, 0.0f, 0.0f, 0.0f};
int cnt[4] = {0, 0, 0, 0};
for (int dy = -kernel_size_; dy <= kernel_size_; dy++)
for (int dx = -kernel_size_; dx <= kernel_size_; dx++)
{
for (int dx = -kernel_size_; dx <= kernel_size_; dx++)
int xx = x + dx;
int yy = y + dy;
if (xx >= 0 && yy >= 0 && xx < area.xmax && yy < area.ymax)
Sergey Sharybin commented 2023-04-20 09:31:56 +02:00
Outdated
Review
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Suggest using early continue and un-indent the block.

Suggest using early `continue` and un-indent the block.
{
int xx = x + dx;
int yy = y + dy;
if (xx >= 0 && yy >= 0 && xx < area.xmax && yy < area.ymax)
float v;
v = image->get_value(xx, yy, ch);
if (dx <= 0 && dy <= 0)
{
//double v = temp.at<float>(yy, xx * dim + c);
float v;
v = image->get_value(xx, yy, ch);
sum[0] += v;
var[0] += v * v;
cnt[0]++;
}
if (dx <= 0 && dy <= 0)
{
sum[0] += v;
var[0] += v * v;
cnt[0]++;
}
if (dx >= 0 && dy <= 0)
{
sum[1] += v;
var[1] += v * v;
cnt[1]++;
}
if (dx >= 0 && dy <= 0)
{
sum[1] += v;
var[1] += v * v;
cnt[1]++;
}
if (dx <= 0 && dy >= 0)
{
sum[2] += v;
var[2] += v * v;
cnt[2]++;
}
if (dx <= 0 && dy >= 0)
{
sum[2] += v;
var[2] += v * v;
cnt[2]++;
}
if (dx >= 0 && dy >= 0)
{
sum[3] += v;
var[3] += v * v;
cnt[3]++;
}
if (dx >= 0 && dy >= 0)
{
sum[3] += v;
var[3] += v * v;
cnt[3]++;
}
}
}
std::vector<std::pair<double, int>> vec;
for (int i = 0; i < 4; i++)
{
sum[i] = cnt[i] != 0 ? sum[i] / cnt[i] : 0.0f;
var[i] = cnt[i] != 0 ? var[i] / cnt[i] : 0.0f;
var[i] = sqrt(var[i] - sum[i] * sum[i]);
vec.push_back(std::make_pair(var[i], i));
}
sort(vec.begin(), vec.end());
float res = static_cast<float>(sum[vec[0].second]);
output->get_value(x, y, ch) = res;
}
std::vector<std::pair<double, int>> vec;
for (int i = 0; i < 4; i++)
{
sum[i] = cnt[i] != 0 ? sum[i] / cnt[i] : 0.0f;
var[i] = cnt[i] != 0 ? var[i] / cnt[i] : 0.0f;
var[i] = sqrt(var[i] - sum[i] * sum[i]);
vec.push_back(std::make_pair(var[i], i));
}
sort(vec.begin(), vec.end());
float res = static_cast<float>(sum[vec[0].second]);
output->get_value(x, y, ch) = res;
}
}
}
void KuwaharaOperation::get_area_of_interest(const int /*input_idx*/,
const rcti & /*output_area*/,
rcti &r_input_area)
{
r_input_area = this->get_canvas();
}
} // namespace blender::compositor

22
source/blender/compositor/operations/COM_KuwaharaOperation.h
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@ -3,11 +3,11 @@
#pragma once
#include "COM_NodeOperation.h"
#include "COM_MultiThreadedOperation.h"
namespace blender::compositor {
class KuwaharaOperation : public NodeOperation {
class KuwaharaOperation : public MultiThreadedOperation {
SocketReader *image_reader_;
int kernel_size_;
@ -26,21 +26,9 @@ class KuwaharaOperation : public NodeOperation {
void set_variation(int variation);
int get_variation();
void update_memory_buffer(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) override;
void get_area_of_interest(const int input_idx,
const rcti & output_area,
rcti &r_input_area) override;
//
// bool determine_depending_area_of_interest(rcti *input,
// ReadBufferOperation *read_operation,
// rcti *output) override;
//
// void update_memory_buffer_partial(MemoryBuffer *output,
// const rcti &area,
// Span<MemoryBuffer *> inputs) override;
void update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs) override;
};

2
source/blender/nodes/composite/nodes/node_composite_kuwahara.cc
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@ -30,7 +30,7 @@ static void node_composit_init_kuwahara(bNodeTree * /*ntree*/, bNode *node)
NodeKuwaharaData *data = MEM_cnew<NodeKuwaharaData>(__func__);
node->storage = data;
data->kernel_size = 4.1f;
data->kernel_size = 4;
}
static void node_composit_buts_kuwahara(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)