a vx_image out of an array

To create a `vx_image` out of an array, you can use the OpenVX API. Here's an example:

vx_context context = vxCreateContext();

// Define the image properties
vx_uint32 width = 640;
vx_uint32 height = 480;
vx_df_image format = VX_DF_IMAGE_U8;

// Create the image
vx_image image = vxCreateImage(context, width, height, format);

// Get the image properties
vx_uint32 image_width, image_height;
vx_df_image image_format;
vxQueryImage(image, VX_IMAGE_WIDTH, &image_width, sizeof(image_width));
vxQueryImage(image, VX_IMAGE_HEIGHT, &image_height, sizeof(image_height));
vxQueryImage(image, VX_IMAGE_FORMAT, &image_format, sizeof(image_format));

// Create an array to hold the image data
vx_uint8 *data = (vx_uint8*)malloc(image_width * image_height * sizeof(vx_uint8));

// Fill the array with data (e.g. from a file)
// ...

// Copy the array into the image
vx_imagepatch_addressing_t addr;
addr.dim_x = image_width;
addr.dim_y = image_height;
addr.scale_x = VX_SCALE_UNITY;
addr.scale_y = VX_SCALE_UNITY;
addr.step_x = sizeof(vx_uint8);
addr.step_y = image_width * sizeof(vx_uint8);
vx_imagepatch_rect_t rect;
rect.start_x = 0;
rect.start_y = 0;
rect.end_x = image_width;
rect.end_y = image_height;
vxCopyImagePatch(image, &rect, 0, &addr, data, VX_WRITE_ONLY, VX_MEMORY_TYPE_HOST);

// Use the image for processing
// ...

// Release resources
vxReleaseImage(&image);
vxReleaseContext(&context);
free(data);

This code creates an OpenVX context, creates an image with the specified properties, creates an array to hold the image data, fills the array with data, and copies the array into the image. You can then use the image for processing and release the resources when you're done.