Picture Production and Bitmap Conversion

Introduction

This document provides instructions on how to produce images and convert them into a bitmap format suitable for GooDisplay e-paper displays, specifically for the GDEP073E01 model. It details the process of preparing an image and using the Image2lcd.exe tool for conversion.

1. How to Make Picture

To begin, refer to Figure 1, which illustrates a sample e-paper display. The process involves creating a pure color image with a resolution of 800x480 pixels. Save this image as either a BMP or JPG file, with BMP being the recommended format.

Note: For optimal image processing, particularly dithering, please visit https://www.e-paper-display.com/dithering.html.

The process typically involves selecting a file using a file selection interface, as shown in a web-based tool example. This interface allows users to upload their image, which is then processed.

[Description of Figure 1: A GooDisplay e-paper screen showing a vibrant, abstract colorful image.]

[Description of web tool screenshot: A web interface with a button labeled "选择文件" (Select File) followed by a filename "800x480-5.jpg", and a button labeled "Download Image".]

2. Bitmap Conversion

The next step is to convert the prepared image into a format compatible with the display. This is achieved using the Image2lcd.exe tool, which is typically found within a RAR package provided by GooDisplay.

Parameter settings for Image2lcd.exe are shown in Figure 2. Follow these steps:

1. Open the picture file in Image2lcd.exe.
2. Set "Output file type" to "C array (*.c)".
3. Set "Scan mode" to "horizontal scan".
4. Set "BitsPixel" to "256 colors".
5. Set "Max Width and Height" to "800" and "480" respectively. Click the confirmation arrow [confirm arrow] to apply these dimensions.
6. Regarding the checkboxes: Do not tick the following five items:
   • Include head data [checkbox]
   • Antitone pixel in byte [checkbox]
   • Scan Right to Left [checkbox]
   • Scan Bottom to Top [checkbox]
   • MSB First [checkbox]
7. "Reverse color": Tick this option if you do not want to reverse the colors in the output.
8. Click "Save" to save the converted data as a ".c" file.
9. Replace the corresponding array in your program with the data from the generated ".c" file.

[Description of Figure 2: A screenshot of the Image2lcd.exe software. The left panel shows input image details and parameter settings including "Output file type" set to "C语言数组(*.c)" (C array (*.c)), "Scan mode" set to "水平扫描" (Horizontal scan), "Output grayscale" set to "256色" (256 colors), and "Max Width and Height" set to 800 and 480. Several checkboxes are visible, including "包含图像头数据" (Include head data), "字节内象素数据反序" (Antitone pixel in byte), "自右至左扫描" (Scan Right to Left), "自底至顶扫描" (Scan Bottom to Top), and "高位在前(MSB First)" (MSB First). The right panel shows a preview of the input image and the converted output image. Below the preview, there are options for "Reverse color" (颜色反转) and "Normal display" (正常显示).]