From 4e47342e6c0ee7638283379e6bd3679667f377b9 Mon Sep 17 00:00:00 2001
From: Bi Tiekai <52001909+vc-zju@users.noreply.github.com>
Date: Wed, 15 Sep 2021 04:53:08 +0800
Subject: [PATCH] Update vibe-background-sequential.cpp (#206)
solve the logical error between initialization and segmentation in vibe
---
.../ViBe/vibe-background-sequential.cpp | 25 +++++++++++--------
1 file changed, 15 insertions(+), 10 deletions(-)
diff --git a/src/algorithms/ViBe/vibe-background-sequential.cpp b/src/algorithms/ViBe/vibe-background-sequential.cpp
index 4bec4e6..b2bc8d4 100644
--- a/src/algorithms/ViBe/vibe-background-sequential.cpp
+++ b/src/algorithms/ViBe/vibe-background-sequential.cpp
@@ -548,16 +548,21 @@ namespace bgslibrary
model->historyBuffer = (uint8_t *)malloc((3 * width) * height * (model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES) * sizeof(uint8_t));
assert(model->historyBuffer != NULL);
- for (int index = (3 * width) * height - 1; index >= 0; --index) {
- uint8_t value = image_data[index];
-
- for (int x = 0; x < model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES; ++x) {
- int value_plus_noise = value + rand() % 20 - 10;
-
- if (value_plus_noise < 0) { value_plus_noise = 0; }
- if (value_plus_noise > 255) { value_plus_noise = 255; }
-
- model->historyBuffer[index * (model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES) + x] = value_plus_noise;
+ auto plus_noise = [](uint8_t value) -> int {int value_plus_noise = value + rand() % 20 - 10;
+ if (value_plus_noise < 0) { value_plus_noise = 0; }
+ if (value_plus_noise > 255) { value_plus_noise = 255; }
+ return value_plus_noise;};
+ for(int index = (3 * width) * height - 1; index >= 0; index -= 3) {
+ uint8_t value_1 = image_data[index];
+ uint8_t value_2 = image_data[index - 1];
+ uint8_t value_3 = image_data[index - 2];
+ for(int x = 0; x < model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES; ++x) {
+ int value_plus_noise1 = plus_noise(value_1);
+ int value_plus_noise2 = plus_noise(value_2);
+ int value_plus_noise3 = plus_noise(value_3);
+ model->historyBuffer[(index - 2) * (model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES) + x * 3 + 2] = value_plus_noise1;
+ model->historyBuffer[(index - 2) * (model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES) + x * 3 + 1] = value_plus_noise2;
+ model->historyBuffer[(index - 2) * (model->numberOfSamples - NUMBER_OF_HISTORY_IMAGES) + x * 3] = value_plus_noise3;
}
}
--
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