keying专题

File transfer over sound card II: Phase Shift Keying

墙外的文章,转载贴过来慢慢看,慢慢翻译。 I've played around further with the file transfer over sound card idea, and developed a more advanced method that uses a technique called Phase Shift Keying. Similar techniques a

嵌入式 Color Keying(抠色)SDL背景透明

照翻教程)现在你即将要学习如何使用color key,用English来说就是这个教程将要教你如何在使用一个表面的时候将其背景色去掉。SDL_Surface结构有一个叫做color key的结构,也就是代表了你在bliting表面的时候不想予以显示的颜色,当你想使用透明表面的时候这个是灰常有用滴! 如图,小人的背景是青色的(R:0,G:FF,B:FF),那么我们现在要将小人背景透明化,则现在的c

lvgl8.2-canvas -Transparent Canvas with chroma keying

创建带色度键控的透明画布 #define CANVAS_WIDTH 800#define CANVAS_HEIGHT 480void lvgl_canvas_demo(void){lv_btn_create(lv_scr_act());static lv_color_t cbuf[LV_CANVAS_BUF_SIZE_INDEXED_1BIT(CANVAS_WIDTH, CANVAS_H

transparent canvas with chroma keying for little vGL

定义画布尺寸 #define TRANSPARENT_CANVAS_WIDTH 50#define TRANSPARENT_CANVAS_HIGHT 50 创建一个button lv_btn_create(lv_scr_act(), NULL); 定义画布缓冲buffer,注意不能是局部的 static lv_color_t cbuf[LV_CANVAS_BUF_SIZE_IN

File transfer over sound card II: Phase Shift Keying

墙外的文章,转载贴过来慢慢看,慢慢翻译。 I've played around further with the file transfer over sound card idea, and developed a more advanced method that uses a technique called Phase Shift Keying. Similar techniques a