Changed several figures alt in the blogposts.

FranFin · FranFin · commit 02bacfca5525 · 2020-09-03T17:25:58.000+02:00
diff --git a/_posts/2020-07-17-EWG.md b/_posts/2020-07-17-EWG.md
@@ -20,4 +20,4 @@ Please find [here](http://meet.google.com/saf-gjix-swf) the link to the Google m
 the first meeting.
 Everyone is welcome to add items that they consider relevant in the form of comments.
 
-<img alt="micro-ROS display" src="/img/posts/2020-07-17-EWG.jpg" width="100%"/>
+<img alt="EWG advertisement" src="/img/posts/2020-07-17-EWG.jpg" width="100%"/>
diff --git a/_posts/2020-08-27-esp32.md b/_posts/2020-08-27-esp32.md
@@ -5,7 +5,7 @@ author: francesca-finocchiaro
 
 The micro-ROS team is glad to announce that the pool of boards officially supported by the project has widened! The [ESP32 MCU](https://www.espressif.com/en/products/socs/esp32) is now part of the family. ESP32 is a series of low-cost, low-power microcontrollers with integrated Wi-Fi and dual-mode Bluetooth, widely used for both commercial and industrial purposes.
 
-<img alt="micro-ROS display" src="/img/posts/esp32_cut.png" width="70%"/>
+<img alt="ESP32 board" src="/img/posts/esp32_cut.png" width="70%"/>
 
 micro-ROS targets mid-range and medium-to-high performance 32-bits microcontrollers families. Up to now, the boards officially supported by the project were solely based on the STM32 series from ST, MCUs featuring ARM Cortex-M processors. On the other hand, the ESP32 is an ultra-low power consumption dual-core system with two Xtensa LX6 CPUs, exposing a large collection of peripherals.
 
diff --git a/_posts/2020-09-03-memo-prof-xrcedds.md b/_posts/2020-09-03-memo-prof-xrcedds.md
@@ -13,15 +13,15 @@ The results for this analysis are summarized in the graphs below for publisher a
 
 * **Publisher Applications**:
   
-  <img alt="micro-ROS display" src="/img/posts/overall_pub.png" width="80%"/>
+  <img alt="Results for Micro XRCE-DDS publisher application" src="/img/posts/overall_pub.png" width="80%"/>
 
 * **Subscriber Applications**:
   
-  <img alt="micro-ROS display" src="/img/posts/overall_sub.png" width="80%"/>
+  <img alt="Results for Micro XRCE-DDS subscriber application" src="/img/posts/overall_sub.png" width="80%"/>
 
 
 On the server side, we have investigated the memory consumption of an Agent communicating with a mock Client application on Linux that is publishing and subscribing to topics of known size, by measuring the binary size of the compiled agent (which resulted to be of 385 KB) and analysing heap and stack usages. The results for the latter are summarized in the plot below.
 
-<img alt="micro-ROS display" src="/img/posts/Memory_usage_XRCE-DDS_Agent.png" width="60%"/>
+<img alt="Results for Micro XRCE-DDS agent" src="/img/posts/Memory_usage_XRCE-DDS_Agent.png" width="60%"/>
 
 For more information regarding the methodology employed for performing these profilings, refer to the full report published on [eProsima](https://www.eprosima.com/)'s webpage.
