NekoCWD/libcamera
NekoCWD/libcamera
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 7 Wiki Activity Actions

ipa: rpi: Add "focus" algorithm

Browse source 
Adds FocusStatus to the image metadata, containing contrast measurements
across the image. Optionally also prints a contrast measure to the
console, to aid in manual adjustment of the lens. Note that it is not an
actual auto-focus algorithm that can drive a lens!

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
David Plowman 2020-05-28 15:51:32 +01:00 • committed by Laurent Pinchart
parent 0952f2014d
commit 23e15e72f9
5 changed files with 113 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

51
src/ipa/raspberrypi/controller/rpi/focus.cpp Normal file
View file

@ -0,0 +1,51 @@
/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2020, Raspberry Pi (Trading) Limited
*
* focus.cpp - focus algorithm
*/
#include <stdint.h>
#include "../focus_status.h"
#include "../logging.hpp"
#include "focus.hpp"
using namespace RPi;
#define NAME "rpi.focus"
Focus::Focus(Controller *controller)
: Algorithm(controller)
{
}
char const *Focus::Name() const
{
return NAME;
}
void Focus::Read(boost::property_tree::ptree const &params)
{
print_ = params.get<int>("print", 0);
}
void Focus::Process(StatisticsPtr &stats, Metadata *image_metadata)
{
FocusStatus status;
unsigned int i;
for (i = 0; i < FOCUS_REGIONS; i++)
status.focus_measures[i] = stats->focus_stats[i].contrast_val[1][1] / 1000;
status.num = i;
image_metadata->Set("focus.status", status);
if (print_) {
uint32_t value = (status.focus_measures[5] + status.focus_measures[6]) / 10;
RPI_LOG("Focus contrast measure: " << value);
}
}
/* Register algorithm with the system. */
static Algorithm *Create(Controller *controller)
{
return new Focus(controller);
}
static RegisterAlgorithm reg(NAME, &Create);